232113_hydronic_piping.pdf

CHICOPEE ARMORY REHABILITATION MMD PROJECT NO. 985101

CHICOPEE, MASSACHUSETTS ISSUED FOR BID - 05/20/11

10090 HYDRONIC PIPING AND SPECIALTIES 232113-1

SECTION 232113

HYDRONIC PIPING AND SPECIALTIES

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 1 Specification Sections, apply to this Section.

B. The requirements of Section 230100, “Basic Mechanical Requirements” apply to work defined by this Section.

C. The requirements of Section 230500, “Basic Mechanical Materials and Methods” apply to work defined by the Section.

1.2 SUMMARY

A. This Section includes piping, general-duty valves, special-duty valves, and hydronic specialties for hot-water heating, chilled-water cooling, and condenser water systems; makeup water for these systems; blowdown drain lines; and condensate drain piping.

B. Related Sections include the following:

1. Division 7, Section 078413 "Through-Penetration Firestop Systems" for materials and methods for sealing pipe penetrations through fire and smoke barriers.

2. Division 7, Section 079200 "Joint Sealants" for materials and methods for sealing pipe penetrations through exterior walls.

3. Division 23, Section 230500"Basic Mechanical Materials and Methods" for general piping materials and installation requirements.

4. Division 23, Section 230519"Meters and Gages" for thermometers, flow meters, and pressure gages.

5. Division 23, Section 230553 "Mechanical Identification" for labeling and identifying hydronic piping.

6. Division 23, Section 232123 "Hydronic Pumps" for pumps, motors, and accessories for hydronic piping.

7. Division 23, Section 230900 "HVAC Instrumentation and Controls" for temperature-control valves and sensors.

1.3 DEFINITIONS

A. CPVC: Chlorinated polyvinyl chloride.

B. CWP: Cold working pressure.

C. EPDM: Ethylene-propylene-diene terpolymer rubber.

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D. NBR: Acrylonitrile-butadiene rubber.

E. PTFE: Polytetrafluoroethylene plastic.

F. PVC: Polyvinyl chloride

G. SWP: Steam working pressure.

H. TFE: Tetrafluoroethylene plastic.

1.4 SUBMITTALS

A. Product Data: For each type of general-duty valve indicated. Include body, seating, and trim materials; valve design; pressure and temperature classifications; end connections; arrangement;

dimensions; and required clearances. Include list indicating valve and its application. Include rated capacities; shipping, installed, and operating weights; furnished specialties; and accessories

B. Product Data: For each type of special-duty valve indicated. Include flow and pressure drop curves based on manufacturer's testing for diverting fittings, calibrated balancing valves, and automatic flow-control valves.

C. Shop Drawings: Detail fabrication of pipe anchors, hangers, special pipe support assemblies, alignment guides, expansion joints and loops, and their attachment to the building structure.

Detail location of anchors, alignment guides, and expansion joints and loops.

D. Welding Certificates: Copies of certificates for welding procedures and personnel.

E. Field Test Reports: Written reports of tests specified in Part 3 of this Section. Include the following:

1. Test procedures used.

2. Test results that comply with requirements.

3. Failed test results and corrective action taken to achieve requirements.

F. Maintenance Data: For hydronic specialties and special-duty valves to include in maintenance manuals specified in Division 1.

G. Water Analysis: Submit a copy of the water analysis to illustrate water quality available at

Project site.

1.5 QUALITY ASSURANCE

A. Welding: Qualify processes and operators according to the ASME Boiler and Pressure Vessel

Code: Section IX, "Welding and Brazing Qualifications."

B. ASME Compliance: Comply with ASME B31.9, "Building Services Piping," for materials, products, and installation. Safety valves and pressure vessels shall bear the appropriate ASME

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label. Fabricate and stamp air separators and expansion tanks to comply with the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1.

C. ASME Compliance: [ASME B31.1 for power piping valves and] ASME B31.9 for building services piping valves.

D. ASME Compliance for Ferrous Valves: ASME B16.10 and ASME B16.34 for dimension and design criteria.

1.6 COORDINATION

A. Coordinate layout and installation of hydronic piping and suspension system components with other construction, including light fixtures, HVAC equipment, fire-suppression-system components, and partition assemblies.

B. Coordinate pipe sleeve installations for foundation wall penetrations.

C. Coordinate piping installation with roof curbs, equipment supports, and roof penetrations. Roof specialties are specified in Division 7 Sections.

D. Coordinate pipe fitting pressure classes with products specified in related Sections.

E. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into base. Concrete, reinforcement, and formwork requirements are specified in Division 3 Sections.

F. Coordinate installation of pipe sleeves for penetrations through exterior walls and floor assemblies. Coordinate with requirements for firestopping specified in Division 7, Section

07841 "Through-Penetration Firestop Systems" for fire and smoke wall and floor assemblies.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Prepare valves for shipping as follows:

1. Protect internal parts against rust and corrosion.

2. Protect threads, flange faces, grooves, and weld ends.

3. Set angle, gate, and globe valves closed to prevent rattling.

4. Set ball and plug valves open to minimize exposure of functional surfaces.

5. Set butterfly valves closed or slightly open.

6. Block check valves in either closed or open position.

B. Use the following precautions during storage:

1. Maintain valve end protection.

2. Store valves indoors and maintain at higher than ambient dew-point temperature. If outdoor storage is necessary, store valves off the ground in watertight enclosures.

C. Use sling to handle large valves; rig sling to avoid damage to exposed parts. Do not use handwheels or stems as lifting or rigging points.

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1.8 EXTRA MATERIALS

A. Water Treatment Chemicals: Furnish sufficient chemicals for initial system startup and for preventive maintenance for one year from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

B. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Copper Alloy Valves:

a. Apollo Valves; Conbraco Industries, Inc.

b. Milwaukee Valve Company.

c. NIBCO INC.

d. Watts Industries, Inc.; Water Products Division.

2. Ferrous Valves:

a. Milwaukee Valve Company.

b. NIBCO INC.

c. Watts Industries, Inc.; Water Products Division.

3. Lugged Butterfly Valves

a. Milwaukee Valve Company

b. NIBCO, Inc.

c. Watts Industries, Inc.; Water Products Division

4. Grooved Butterfly valves

a. Gruvlok – Anvil International, Inc.

b. Victaulic Company of America

5. Grooved Mechanical-Joint Fittings and Couplings:

a. Grinnell Corporation.

b. Gruvlok – Anvil International, Inc.

c. Victaulic Company of America.

6. Chainwheel Actuators:

a. Babbitt Specialty Co.

b. Roto Hammer Industries, Inc.

7. Calibrated Balancing Valves:

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a. Armstrong Pumps, Inc.

b. Bell & Gossett Domestic Pump; a division of ITT Industries.

c. Danfoss

d. Flow Design Inc.

e. Gerand Engineering Co.

f. Griswold Controls.

g. Taco.

8. Pressure-Reducing Valves:

a. Amtrol, Inc.

b. Armstrong Pumps, Inc.

c. Bell & Gossett Domestic Pump; a division of ITT Industries.

d. Conbraco Industries, Inc.

e. Spence Engineering Company, Inc.

f. Watts Regulator Co.; a division of Watts Water Technologies, Inc.

9. Safety Valves:

a. Amtrol, Inc.

b. Armstrong Pumps, Inc.

c. Bell & Gossett Domestic Pump; a division of ITT Industries.

d. Conbraco Industries, Inc.

e. Kunkle Valve Division.

f. Spence Engineering Company, Inc.

10. Automatic Flow-Control Valves:

a. Flow Design Inc.

b. Griswold Controls.

11. Expansion Tanks:

a. Amtrol, Inc.

b. Armstrong Pumps, Inc.

c. Bell & Gossett Domestic Pump; a division of ITT Industries.

d. Taco.

12. Air Separators and Air Purgers:

a. Amtrol, Inc.

b. Armstrong Pumps, Inc.

c. Bell & Gossett Domestic Pump; a division of ITT Industries.

d. Spirotherm, Inc.

e. Taco.

13. Glycol Feeders:

a. Advantage Controls.

b. J.L. Wingert http://www.specagent.com/LookUp/?uid=123456812364&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456823721&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812365&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812366&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812367&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812368&mf=04&src=wd http://www.specagent.com/LookUp/?ulid=3382&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812374&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812375&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456823729&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812376&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812377&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456823732&mf=04&src=wd http://www.specagent.com/LookUp/?ulid=3383&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812378&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812379&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456823736&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812380&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812381&mf=04&src=wd http://www.specagent.com/LookUp/?ulid=3384&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812382&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812383&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812384&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812385&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456823741&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812386&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812384&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812385&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456823741&mf=04&src=wd http://www.specagent.com/LookUp/?uid=123456812386&mf=04&src=wd

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2.2 PIPING MATERIALS

A. General: Refer to Part 3 "Piping Applications" Article for applications of pipe and fitting materials.

2.3 COPPER TUBE AND FITTINGS

A. Drawn-Temper Copper Tubing: ASTM B 88, Type L .

B. DWV Copper Tubing: ASTM B 306, Type DWV.

C. Wrought-Copper Fittings: ASME B16.22.

D. Wrought-Copper Unions: ASME B16.22.

E. Solder Filler Metals: ASTM B 32, 95-5 tin antimony.

F. Brazing Filler Metals: AWS A5.8/A5.8M, Classification BAg-1 (silver).

2.4 STEEL PIPE AND FITTINGS

A. Steel Pipe, NPS 2 and Smaller: ASTM A 53/A 53M, Type S (seamless) or Type F (furnace-butt welded), Grade B, Schedule 40, black steel, plain ends.

B. Steel Pipe, NPS 2-1/2 through NPS 12: ASTM A 53/A 53M, Type E (electric-resistance welded), Grade B, Schedule 40, black steel, plain ends.

1. Steel Pipe Nipples: ASTM A 733, made of ASTM A 53/A 53M, Schedule 40, black steel; seamless for NPS 2 and smaller and electric-resistance welded for NPS 2-1/2 and larger.

C. Cast-Iron Threaded Fittings: ASME B16.4; Classes 125 and 250.

D. Malleable-Iron Threaded Fittings: ASME B16.3, Classes 150 and 300.

E. Malleable-Iron Unions: ASME B16.39; Classes 150, 250, and 300.

F. Cast-Iron Pipe Flanges and Flanged Fittings: ASME B16.1, Classes 25, 125, and 250; raised ground face, and bolt holes spot faced.

G. Wrought-Steel Fittings: ASTM A 234/A 234M, wall thickness to match adjoining pipe.

H. Wrought Cast- and Forged-Steel Flanges and Flanged Fittings: ASME B16.5, including bolts, nuts, and gaskets of the following material group, end connections, and facings:

1. Material Group: 1.1.

2. End Connections: Butt-welding.

3. Facings: Raised face.

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I. Grooved Mechanical-Joint Fittings: ASTM A 536, Grade 65-45-12 ductile iron; ASTM A 47, Grade 32510 malleable iron; ASTM A 53/A 53M, Type F, E, or S, Grade B fabricated steel; or

ASTM A 106/A 106M, Grade B steel fittings with grooves or shoulders designed to accept grooved end couplings.

J. Grooved Mechanical-Joint Couplings: Ductile- or malleable-iron housing and synthetic rubber gasket of central cavity pressure-responsive design; with nuts, bolts, locking pin, locking toggle, or lugs to secure grooved pipe and fittings.

K. Flexible Connectors: Stainless-steel bellows with woven, flexible, bronze, wire-reinforcing protective jacket; 150-psig minimum working pressure and 250 deg F maximum operating temperature. Connectors shall have flanged or threaded-end connections to match equipment connected and shall be capable of 3/4-inch misalignment.

L. Spherical, Rubber, Flexible Connectors: Fiber-reinforced rubber body with steel flanges drilled to align with Classes 150 and 300 steel flanges; operating temperatures up to 250 deg F and pressures up to 150 psig.

M. Packed, Slip, Expansion Joints: 150-psig minimum working pressure, steel pipe fitting consisting of telescoping body and slip-pipe sections, packing ring, packing, limit rods, flanged ends, and chrome-plated finish on slip-pipe telescoping section.

N. Welding Materials: Comply with Section II, Part C, of the ASME Boiler and Pressure Vessel

Code for welding materials appropriate for wall thickness and for chemical analysis of pipe being welded.

O. Gasket Material: Thickness, material, and type suitable for fluid to be handled; and design temperatures and pressures.

2.5 PLASTIC PIPE AND FITTINGS

A. CPVC Plastic Pipe: ASTM F 441, Schedules 40 and 80, plain ends.

B. PVC Plastic Pipe: ASTM D 1785, Schedules 40 and 80, plain ends.

C. CPVC Plastic Pipe Fittings: Socket-type pipefittings, ASTM F 438 for Schedule 40 pipe;

ASTM F 439 for Schedule 80 pipe.

1. CPVC Solvent Cement: ASTM F 493.

D. PVC Plastic Pipe Fittings: Socket-type pipefittings, ASTM D 2466 for Schedule 40 pipe;

ASTM D 2467 for Schedule 80 pipe.

1. PVC Solvent Cement: ASTM D 2564.

2.6 SPECIAL-DUTY VALVES

A. Refer to Part 3 "Valve Applications" Article for applications of each valve.

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B. Calibrated Balancing Valves, NPS 2 and Smaller: Bronze body, ball type, 300-psig working pressure, 250 deg F maximum operating temperature, and having threaded ends. Valves shall have calibrated orifice or venturi, connections for portable differential pressure meter with integral seals, and be equipped with a memory stop to retain set position.

1. Basis of Design: Flow Design Accusetter

C. Calibrated Balancing Valves, NPS 2-1/2 and Larger:

1. Cast-iron or steel body, ball type, 125-psig working pressure, 250 deg F maximum operating temperature, and having flanged or grooved connections. Valves shall have calibrated orifice or venturi, connections for portable differential pressure meter with integral seals, and be equipped with a memory stop to retain set position. Basis of

Design: Flow Design Accusetter.

2. Ductile-iron body, y-pattern, globe type, Ametal brass copper alloy parts, 300-psig

(2065-kPa) working pressure, 250 deg (121 deg C) flanged connections and 230 deg (110 deg C) grooved connections maximum operating temperature. Valve shall have 8, 12, or

16-turn digital readout handwheel for balancing, concealed memory feature with locking, tamper-proof setting, EPDM o-ring seals and connections for Series 738 portable differential pressure meter. Victaulic/Tour & Andersson Series 788 or 789.

D. Pressure-Reducing Valves: Diaphragm-operated, bronze or brass body with low inlet pressure check valve, inlet strainer removable without system shutdown, and noncorrosive valve seat and stem. Select valve size, capacity, and operating pressure to suit system. Valve shall be factory set at operating pressure and have capability for field adjustment.

E. Safety Valves: Diaphragm-operated, bronze or brass body with brass and rubber, wetted, internal working parts; shall suit system pressure and heat capacity and shall comply with the

ASME Boiler and Pressure Vessel Code, Section IV.

F. Automatic Flow-Control Valves: Gray-iron body, factory set to maintain constant flow with plus or minus 5 percent over system pressure fluctuations, and equipped with a readout kit including flow meter, probes, hoses, flow charts, and carrying case. Each valve shall have an identification tag attached by chain, and be factory marked with the zone identification, valve number, and flow rate. Valve shall be line size and one of the following designs:

1. Gray-iron or brass body, designed for 175 psig at 200 deg F with stainless-steel piston and spring.

2. Brass or ferrous-metal body, designed for 300 psig at 250 deg F with corrosion-resistant, tamperproof, self-cleaning, piston-spring assembly easily removable for inspection or replacement.

3. Combination assemblies, including bronze ball valve and brass alloy control valve, with stainless-steel piston and spring, fitted with pressure and temperature test valves, and designed for 300 psig at 250 deg F.

2.7 HYDRONIC SPECIALTIES

A. Manual Air Vent:

1. Body: Bronze.

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2. Internal Parts: Nonferrous.

3. Operator: Screwdriver or thumbscrew.

4. Inlet Connection: NPS 1/2.

5. Discharge Connection: NPS 1/8.

6. CWP Rating: 150 psig.

7. Maximum Operating Temperature: 225 deg F.

B. Automatic Air Vent:

1. Designed to vent automatically with float principle.

2. Body: Bronze or cast iron.

3. Internal Parts: Nonferrous.

4. Operator: Noncorrosive metal float.

5. Inlet Connection: NPS 1/2.

6. Discharge Connection: NPS 1/4.

7. CWP Rating: 150 psig.

8. Maximum Operating Temperature: 240 deg F.

C. Expansion Tanks: Welded carbon steel, rated for 125-psig working pressure and 375 deg F maximum operating temperature. Separate air charge from system water to maintain design expansion capacity by a flexible bladder securely sealed into tank. Include drain fitting and taps for pressure gage and air-charging fitting. Support vertical tanks with steel legs or base; support horizontal tanks with steel saddles. Factory fabricate and test tank with taps and supports installed and labeled according to the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1.

D. In-Line Air Separators:

1. Tank: One-piece cast iron with an integral weir constructed to decelerate system flow to maximize air separation.

2. Maximum Working Pressure: Up to 175 psig.

3. Maximum Operating Temperature: Up to 300 deg F.

E. Air Purgers:

1. Body: Cast iron with internal baffles that slow the water velocity to separate the air from solution and divert it to the vent for quick removal.

2. Maximum Working Pressure: 150 psig.

3. Maximum Operating Temperature: 250 deg F.

F. High Efficiency Dirt Separators

1. Welded black steel; ASME constructed and labeled for 125-psig minimum working pressure and 375 deg F maximum operating temperature.

2. Provide units selected at the point of peak efficiency per the manufacturer’s recommendations.

3. Provide units with entering velocities not to exceed 4 feet per second at specified GPM.

Designated models specifically designed for high velocity systems may have an entering velocity of up to 10 feet per second.

4. Units shall include an internal coalescing bundle filling the entire vessel to suppress turbulence and provide high efficiency. The bundle shall consist of a copper core tube

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with continuous wound copper medium permanently affixed to the core. A separate copper medium is to be wound completely around and permanently affixed to each internal element.

5. Separators shall include a bottom connection for use as a blow down connection for periodic cleaning.

6. Dirt and sediment separator function shall be capable of removing 80% of particles 30 micron and larger within 100 passes.By-pass or side-stream filters are not acceptable.Bypass Chemical Feeder: Welded steel construction; 125-psig working pressure; 5-gal. capacity; with fill funnel and inlet, outlet, and drain valves.

1. Chemicals: Specially formulated, based on analysis of makeup water, to prevent accumulation of scale and corrosion in piping and connected equipment.

H. Y-Pattern Strainers: 125-psig working pressure; cast-iron body (ASTM A 126, Class B), flanged ends for NPS 2-1/2 and larger, threaded connections for NPS 2 and smaller, bolted cover, perforated stainless-steel basket, and bottom drain connection.

I. Basket Strainers: 125-psig working pressure; high-tensile cast-iron body (ASTM A 126, Class B), flanged-end connections, bolted cover, perforated stainless-steel basket, and bottom drain connection.

J. Flexible Connectors:

1. Body: Stainless-steel bellows with woven, flexible, bronze, wire-reinforcing protective jacket.

2. End Connections: Threaded or flanged to match equipment connected.

3. Performance: Capable of 3/4-inch misalignment.

4. CWP Rating: 150 psig.

5. Maximum Operating Temperature: 250 deg F.

K. Spherical, Rubber, Flexible Connectors:

1. Body: Fiber-reinforced rubber body.

2. End Connections: Steel flanges drilled to align with Classes 150 and 300 steel flanges.

3. Performance: Capable of misalignment.

4. CWP Rating: 150 psig.

5. Maximum Operating Temperature: 250 deg F.

2.8 VALVES, GENERAL

A. Refer to Part 3 "Valve Applications" Article for applications of valves.

B. Bronze Valves: NPS 2 and smaller with threaded ends, unless otherwise indicated.

C. Ferrous Valves: NPS 2-1/2 and larger with flanged ends, unless otherwise indicated.

D. Valve Pressure and Temperature Ratings: Not less than indicated and as required for system pressures and temperatures.

E. Valve Sizes: Same as upstream pipe, unless otherwise indicated.

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F. Valve Actuators:

1. Chainwheel: For attachment to valves, of size and mounting height, as indicated in the

"Valve Installation" Article in Part 3.

2. Handwheel: For valves other than quarter-turn types.

3. Lever Handle: For quarter-turn valves NPS 6 and smaller, except plug valves.

G. Extended Valve Stems: On insulated valves.

H. Valve Flanges: ASME B16.1 for cast-iron valves, ASME B16.5 for steel valves, and

ASME B16.24 for bronze valves.

I. Valve Grooved Ends: AWWA C606.

1. Solder Joint: With sockets according to ASME B16.18.

a. Caution: Use solder with melting point below 840 deg F for angle, check, gate, and globe valves; below 421 deg F for ball valves.

2. Threaded: With threads according to ASME B1.20.1.

J. Valve Bypass and Drain Connections: MSS SP-45.

2.9 COPPER-ALLOY BALL VALVES

A. MSS SP-110, Two-Piece, Copper-Alloy Ball Valves: Bronze body with large-port, chrome-plated bronze ball; PTFE or TFE seats; and 600-psigminimum CWP rating and blowout-proof stem. O-ring only stem seals shall not be acceptable.

1. Basis of Design: Apollo 70-100 or 70-200 series.

2.10 FERROUS-ALLOY BUTTERFLY VALVES

A. Ferrous-Alloy Butterfly Valves, General: MSS SP-67, Type I, for tight shutoff, with bronze disc and lining suitable for potable water, EPDM seats, unless otherwise indicated.

B. Wafer-Type Flangeless, 200-psig CWP Rating, Ferrous-Alloy Butterfly Valves: Wafer type with two-piece stainless steel stem, dead end rated at no less than 150 psig.

1. Basis of Design: Hammond 6100.

C. Lug-Type Single-Flange, 200-psig CWP Rating, Ferrous-Alloy Butterfly Valves: Wafer-lug type with two-piece stainless steel stem, dead end rated at no less than 150 psig.

1. Basis of Design: Milwaukee ML Series

D. Grooved-End, 175-psig CWP Rating, Ferrous-Alloy Butterfly Valves: Ductile-iron or steel body with grooved or shouldered ends.

1. Basis of Design: Victaulic 300 MasterSeal

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2.11 BRONZE CHECK VALVES

A. MSS SP-80 Type 4, Class 125, Bronze, Swing Check Valves: Bronze body with nonmetallic disc and bronze seat.

1. Basis of Design: Milwaukee 509T

2.12 GRAY-IRON SWING CHECK VALVES

A. MSS SP-71 Type I, Class 125, 175-psig CWP Rating, Grooved-End, Swing Check Valves:

Gray-iron, metal seats, ductile-iron body with grooved or shouldered ends.

2.13 BRONZE GATE VALVES

A. MSS SP-80 Type 2, Class 125, Bronze Gate Valves: Bronze body with rising stem and bronze solid wedge union-ring bonnet, and ferrous-alloy handwheel.

1. Basis of Design: Hammond IB 617/635.

2.14 CAST-IRON GATE VALVES

A. Cast-Iron Gate Valves, General: MSS SP-70, Type I.

B. MSS SP-70, Type 1, Class 125, OS&Y, Bronze-Mounted, Cast-Iron Gate Valves: Cast-iron body with bronze trim, rising stem, and solid-wedge disc.

2.15 BRONZE GLOBE VALVES

A. MSS SP-80, Type 2, Class 125, Bronze Globe Valves: Bronze body with PTFE or TFE disc union-ring bonnet and ferrous-alloy handwheel.

1. Basis of Design: Hammond IB 416T/423.

2.16 CAST-IRON GLOBE VALVES

A. MSS SP-85 Type I, Class 125, Cast-Iron Globe Valves: Gray-iron body with bronze seats.

1. Basis of Design: Hammond IR 116.

2.17 CHAINWHEEL ACTUATORS

A. Description: Valve actuation assembly with sprocket rim, brackets, and chain.

1. Sprocket Rim with Chain Guides: [Ductile iron] [Cast iron] [Aluminum] [Bronze], of type and size required for valve. [Include zinc coating.]

2. Brackets: Type, number, size, and fasteners required to mount actuator on valve.

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3. Chain: Hot-dip, galvanized steel, of size required to fit sprocket rim.

PART 3 - EXECUTION

3.1 PIPING APPLICATIONS

A. Hot and Chilled Water, NPS 2 and Smaller: Aboveground, use Type L drawn-temper copper tubing with soldered joints or Schedule 40 steel pipe with threaded joints.

B. Hot and Chilled Water, NPS 2-1/2 and Larger: Schedule 40 steel pipe with welded and flanged joints or grooved mechanical-joint couplings.

C. Condensate Drain Lines: Type L drawn-temper copper tubing with soldered joints or

Schedule 40, PVC pipe with solvent-welded joints.

3.2 VALVE APPLICATIONS

A. General-Duty Valve Applications: Unless otherwise indicated, use the following valve types:

1. Shutoff Duty: ball, and butterfly valves.

2. Throttling Duty: Globe, ball, and butterfly valves.

B. Install shutoff duty valves at each branch connection to supply mains, at supply connection to each piece of equipment, unless only one piece of equipment is connected in the branch line.

Install throttling duty valves at each branch connection to return mains, at return connections to each piece of equipment, and elsewhere as indicated.

C. Install calibrated balancing valves in the return water line of each heating or cooling element and elsewhere as required to facilitate system balancing.

D. Install check valves at each pump discharge and elsewhere as required to control flow direction.

E. Install safety valves on hot-water generators and elsewhere as required by the ASME Boiler and

Pressure Vessel Code. Install safety-valve discharge piping, without valves, to floor. Comply with the ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, for installation requirements.

F. Install pressure-reducing valves on hot-water generators and elsewhere as required to regulate system pressure.

G. If valves with specified SWP classes or CWP ratings are not available, the same types of valves with higher SWP class or CWP ratings may be substituted.

H. Heating Water Piping: Use the following types of valves:

1. Ball Valves, NPS 2 and Smaller: Two-piece, 600-psig CWP rating, copper alloy.

2. Butterfly Valves, NPS 2-1/2 and Larger: Wafer or Lug-Type, 200-psig CWP rating, ferrous alloy, with EPDM liner.

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3. Grooved-End, Ductile-Iron Butterfly Valves, NPS 2-1/2 and Larger: 300-psig CWP rating.

4. Swing Check Valves, NPS 2 and Smaller: Type 4, Class 125, bronze.

5. Swing Check Valves, NPS 2-1/2 and Larger: Type I, Class 125, gray iron.

6. Globe Valves, NPS 2 and Smaller: Type 2, Class 125, bronze.

7. Globe Valves, NPS 2-1/2 and Larger: Type I, Class 125, bronze-mounted cast iron.

I. Select valves, except wafer and flangeless types, with the following end connections:

1. For Copper Tubing, NPS 2 and Smaller: Solder-joint or threaded ends, except provide valves with threaded ends for heating hot water

2. For Copper Tubing, NPS 2-1/2 to NPS 4: Flanged ends.

3. For Copper Tubing, NPS 5 and Larger: Flanged ends.

4. For Steel Piping, NPS 2 and Smaller: Threaded ends.

5. For Steel Piping, NPS 2-1/2 to NPS 4: Flanged or threaded ends.

6. For Steel Piping, NPS 5 and Larger: Flanged ends.

7. For Grooved-End, Steel Piping: Valve ends may be grooved.

3.3 PIPING INSTALLATIONS

A. Refer to Division 23 Section "Basic Mechanical Materials and Methods" for basic piping installation requirements.

B. Install groups of pipes parallel to each other, spaced to permit applying insulation and servicing of valves.

C. Install drains, consisting of a tee fitting, NPS 3/4 ball valve, and short NPS 3/4 threaded nipple with cap, at low points in piping system mains and elsewhere as required for system drainage.

D. Install piping at a uniform grade of 0.2 percent upward in direction of flow.

E. Reduce pipe sizes using eccentric reducer fitting installed with level side up.

F. Unless otherwise indicated, install branch connections to mains using tee fittings in main pipe, with the takeoff coming out the bottom of the main pipe. For up-feed risers, install the takeoff coming out the top of the main pipe.

G. Install strainers on supply side of each control valve, pressure-reducing valve, solenoid valve, in-line pump, and elsewhere as indicated. Install NPS 3/4 nipple and ball valve in blowdown connection of strainers NPS 2 and larger. Match size of strainer blowoff connection for strainers smaller than NPS 2.

H. Anchor piping for proper direction of expansion and contraction.

I. Wet Piping Systems: Install dielectric coupling and nipple fittings to connect piping materials of dissimilar metals, and between brass or bronze valves and steel piping.

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3.4 VALVE INSTALLATION

A. Piping installation requirements are specified in other Division 23 Sections. Drawings indicate general arrangement of piping, fittings, and specialties.

B. Install valves with unions or flanges at each piece of equipment arranged to allow service, maintenance, and equipment removal without system shutdown.

C. Locate valves for easy access and provide separate support where necessary.

D. Install valves in horizontal piping with stem at or above center of pipe.

E. Install valves in position to allow full stem movement.

F. Install check valves for proper direction of flow and as follows:

1. Swing Check Valves: In horizontal position with hinge pin level.

2. Dual-Plate Check Valves: In horizontal or vertical position, between flanges.

3. Lift Check Valves: With stem upright and plumb.

3.5 HANGERS AND SUPPORTS

A. Hanger, support, and anchor devices are specified in Division 23, Section 230529 "Hangers and

Supports." Comply with requirements below for maximum spacing of supports.

B. Install the following pipe attachments:

1. Adjustable steel clevis hangers for individual horizontal piping less than 20 feet long.

2. Adjustable roller hangers and spring hangers for individual horizontal piping 20 feet or longer.

3. Pipe Roller: MSS SP-58, Type 44 for multiple horizontal piping 20 feet or longer, supported on a trapeze.

4. Spring hangers to support vertical runs.

5. On plastic pipe, install pads or cushions on bearing surfaces to prevent hanger from scratching pipe.

C. When hanging steel piping from roof framing comply with load criteria indicated in detail

XX/SF-XXX. This may require closer hanger spacing than that indicated below. Install hangers for steel piping with the following maximum spacing and minimum rod sizes:

1. NPS 3/4: Maximum span, 7 feet; minimum rod size, 1/4 inch.

2. NPS 1: Maximum span, 7 feet; minimum rod size, 1/4 inch.

3. NPS 1-1/2: Maximum span, 9 feet; minimum rod size, 3/8 inch.

4. NPS 2: Maximum span, 10 feet; minimum rod size, 3/8 inch.

5. NPS 2-1/2: Maximum span, 11 feet; minimum rod size, 3/8 inch.

6. NPS 3: Maximum span, 12 feet; minimum rod size, 3/8 inch.

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7. NPS 4: Maximum span, 14 feet; minimum rod size, 1/2 inch.

8. NPS 6: Maximum span, 17 feet; minimum rod size, 1/2 inch.

D. Install hangers for drawn-temper copper piping with the following maximum spacing and minimum rod sizes:

1. NPS 3/4: Maximum span, 5 feet; minimum rod size, 1/4 inch.

2. NPS 1: Maximum span, 6 feet; minimum rod size, 1/4 inch.

3. NPS 1-1/2: Maximum span, 8 feet; minimum rod size, 3/8 inch.

4. NPS 2: Maximum span, 8 feet; minimum rod size, 3/8 inch.

5. NPS 2-1/2: Maximum span, 9 feet; minimum rod size, 3/8 inch.

6. NPS 3: Maximum span, 10 feet; minimum rod size, 3/8 inch.

E. Plastic Piping Hanger Spacing: Space hangers according to pipe manufacturer's written instructions for service conditions. Avoid point loading. Space and install hangers with the fewest practical rigid anchor points.

F. Support vertical runs at roof, at each floor, and at 10-foot intervals between floors.

3.6 JOINT CONSTRUCTION

A. Refer to Division 23, Section 230500 "Basic Mechanical Materials and Methods" for joint construction requirements for soldered and brazed joints in copper tubing; threaded, welded, and flanged joints in steel piping; and solvent-welded joints for PVC and CPVC piping.

B. Valve Grooved Joints: Assemble joints with keyed coupling housing, gasket, lubricant, and bolts according to coupling and fitting manufacturer's written instructions.

C. Valve Soldered Joints: Use ASTM B 813, water-flushable, lead-free flux; ASTM B 32, lead-free-alloy solder; and ASTM B 828 procedure, unless otherwise indicated.

3.7 HYDRONIC SPECIALTIES INSTALLATION

A. Install manual air vents at high points in piping, at heat-transfer coils, and elsewhere as required for system air venting.

B. Install automatic air vents in mechanical equipment rooms only at high points of system piping, at heat-transfer coils, and elsewhere as required for system air venting.

C. Install dip-tube fittings in boiler outlet. Install piping to expansion tank with a 2 percent upward slope toward tank. Connect boiler-outlet piping.

D. Install in-line air separators in pump suction lines. Install piping to compression tank with a 2 percent upward slope toward tank. Install drain valve on units NPS 2 and larger.

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E. Install combination air separator and strainer in pump suction lines. Install piping to compression tank with a 2 percent upward slope toward tank. Install blowdown piping with gate valve; extend to nearest drain.

F. Install bypass chemical feeders in each hydronic system where indicated, in upright position with top of funnel not more than 48 inches above floor. Install feeder in bypass line, off main, using globe valves on each side of feeder and in the main between bypass connections. Pipe drain, with ball valve, to nearest equipment drain.

G. Install expansion tanks on floor. Vent and purge air from hydronic system, and ensure tank is properly charged with air to suit system design requirements.

3.8 TERMINAL EQUIPMENT CONNECTIONS

A. Size for supply and return piping connections shall be same as for equipment connections.

B. Install control valves in accessible locations close to connected equipment.

C. Install bypass piping with globe valve around control valve. If multiple, parallel control valves are installed, only one bypass is required.

D. Install ports for pressure and temperature gages at coil inlet connections.

3.9 CHEMICAL TREATMENT

A. Perform an analysis of supply water to determine the type and quantities of chemical treatment needed to keep system free of scale, corrosion, and fouling, B.

C. Fill system and perform initial chemical treatment.

3.10 FIELD QUALITY CONTROL

A. Prepare hydronic piping according to ASME B31.9 and as follows:

1. Leave joints, including welds, uninsulated and exposed for examination during test.

2. Provide temporary restraints for expansion joints that cannot sustain reactions due to test pressure. If temporary restraints are impractical, isolate expansion joints from testing.

3. Flush system with clean water. Clean strainers.

4. Isolate equipment from piping. If a valve is used to isolate equipment, its closure shall be capable of sealing against test pressure without damage to valve. Install blinds in flanged joints to isolate equipment.

5. Install safety valve, set at a pressure no more than one-third higher than test pressure, to protect against damage by expanding liquid or other source of overpressure during test.

B. Perform the following tests on hydronic piping:

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1. Use ambient temperature water as a testing medium unless there is risk of damage due to freezing. Another liquid that is safe for workers and compatible with piping may be used.

2. While filling system, use vents installed at high points of system to release trapped air.

Use drains installed at low points for complete draining of liquid.

3. Check expansion tanks to determine that they are not air bound and that system is full of water.

4. Subject piping system to hydrostatic test pressure that is not less than 1.5 times the design pressure. Test pressure shall not exceed maximum pressure for any vessel, pump, valve, or other component in system under test. Verify that stress due to pressure at bottom of vertical runs does not exceed either 90 percent of specified minimum yield strength or 1.7 times "SE" value in Appendix A of ASME B31.9, "Building Services Piping."

5. After hydrostatic test pressure has been applied for at least 10 minutes, examine piping, joints, and connections for leakage. Eliminate leaks by tightening, repairing, or replacing components, and repeat hydrostatic test until there are no leaks.

6. Prepare written report of testing.

3.11 ADJUSTING

A. Mark calibrated nameplates of pump discharge valves after hydronic system balancing has been completed, to permanently indicate final balanced position.

B. Perform these adjustments before operating the system:

1. Open valves to fully open position. Close coil bypass valves.

2. Check pump for proper direction of rotation.

3. Set automatic fill valves for required system pressure.

4. Check air vents at high points of system and determine if all are installed and operating freely (automatic type), or bleed air completely (manual type).

5. Set temperature controls so all coils are calling for full flow.

6. Check operation of automatic bypass valves.

7. Check and set operating temperatures of boilers, chillers, and cooling towers to design requirements.

8. Lubricate motors and bearings.

3.12 CLEANING

A. Flush the entire existing hydronic piping system with mild detergent then flush an additional three times with clean water or until the system runs clean.

B. Flush new work with clean water. Remove and clean or replace strainer screens. After cleaning and flushing hydronic-piping systems, but before balancing, remove disposable fine-mesh strainers in pump suction diffusers.

END OF SECTION 232113