232113-RIB-Hydronic Piping-12-24-2025.pdf

25-388 CBI HVAC and Lighting Upgrade 232113 - 1 Hydronic Piping

SECTION 232113

HYDRONIC PIPING

PART 1 GENERAL

1.01 SECTION INCLUDES

A. Hydronic system requirements.

B. Heating water piping, buried.

C. Heating water and glycol piping, buried.

D. Heating water piping, above grade.

E. Heating water and glycol piping, above grade.

F. Chilled water piping, buried.

G. Chilled water piping, above grade.

H. Condenser water piping, buried.

I. Condenser water piping, above grade.

J. Radiant heating piping system.

K. Equipment drains and overflows.

L. Pipe hangers and supports.

M. Unions, flanges, mechanical couplings, and dielectric connections.

N. Valves:

1. Ball valves.

2. Butterfly valves.

3. Check valves.

4. Pressure independent temperature control valves and balancing valves.

O. Flow controls.

1.02 RELATED REQUIREMENTS

A. Section 083100 - Access Doors and Panels.

B. Section 099123 - Interior Painting.

C. Section 230516 - Expansion Fittings and Loops for HVAC Piping.

D. Section 230553 - Identification for HVAC Piping and Equipment.

E. Section 230719 - HVAC Piping Insulation.

F. Section 232114 - Hydronic Specialties.

G. Section 232500 - HVAC Water Treatment: Pipe cleaning.

1.03 REFERENCE STANDARDS

A. ANSI/FCI 70-2 - Control Valve Seat Leakage; 2021.

B. ASME BPVC-IX - Boiler and Pressure Vessel Code, Section IX - Qualification Standard for

Welding, Brazing, and Fusing Procedures; Welders; Brazers; and Welding, Brazing, and Fusing Operators; 2025.

C. ASME B16.3 - Malleable Iron Threaded Fittings: Classes 150 and 300; 2021.

D. ASME B16.15 - Cast Copper Alloy Threaded Fittings: Classes 125 and 250; 2024.

E. ASME B16.18 - Cast Copper Alloy Solder Joint Pressure Fittings; 2021.

F. ASME B16.22 - Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings; 2021.

G. ASME B16.34 - Valves — Flanged, Threaded, and Welding End; 2025.

H. ASME B16.51 - Copper and Copper Alloy Press-Connect Pressure Fittings; 2021.

Upgrade 232113 - 2 Hydronic Piping

I. ASME B31.9 - Building Services Piping; 2025.

J. ASTM A53/A53M - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless; 2024.

K. ASTM A106/A106M - Standard Specification for Seamless Carbon Steel Pipe for High-

Temperature Service; 2019a.

L. ASTM A123/A123M - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products; 2024.

M. ASTM A183 - Standard Specification for Carbon Steel Track Bolts and Nuts; 2014 (Reapproved

2020).

N. ASTM A234/A234M - Standard Specification for Piping Fittings of Wrought Carbon Steel and

Alloy Steel for Moderate and High Temperature Service; 2025.

O. ASTM A536 - Standard Specification for Ductile Iron Castings; 2024.

P. ASTM B32 - Standard Specification for Solder Metal; 2020.

Q. ASTM B88 - Standard Specification for Seamless Copper Water Tube; 2022.

R. ASTM B88M - Standard Specification for Seamless Copper Water Tube (Metric); 2020.

S. ASTM D2000 - Standard Classification System for Rubber Products in Automotive Applications;

2018, with Editorial Revision (2024).

T. ASTM F876 - Standard Specification for Crosslinked Polyethylene (PEX) Tubing; 2025.

U. ASTM F877 - Standard Specification for Crosslinked Polyethylene (PEX) Hot- and Cold-Water

Distribution Systems; 2025.

V. ASTM F1476 - Standard Specification for Performance of Gasketed Mechanical Couplings for

Use in Piping Applications; 2007 (Reapproved 2024).

W. ASTM F3226/F3226M - Standard Specification for Metallic Press-Connect Fittings for Piping and Tubing Systems; 2019 (Reaffirmed 2024).

X. AWS A5.8M/A5.8 - Specification for Filler Metals for Brazing and Braze Welding; 2019.

Y. AWS D10.12M/D10.12 - Guide for Welding Mild Steel Pipe; 2000.

Z. AWWA C105/A21.5 - Polyethylene Encasement for Ductile-Iron Pipe Systems; 2018.

AA. AWWA C151/A21.51 - Ductile-Iron Pipe, Centrifugally Cast; 2023.

BB. AWWA C606 - Grooved and Shouldered Joints; 2022.

CC. IAPMO (UMC) - 2024 Uniform Mechanical Code; 2024.

DD. ICC (IMC) - International Mechanical Code; Most Recent Edition Adopted by Authority Having

Jurisdiction, Including All Applicable Amendments and Supplements.

EE. MSS SP-58 - Pipe Hangers and Supports - Materials, Design, Manufacture, Selection, Application, and Installation; 2025.

1.04 ADMINISTRATIVE REQUIREMENTS

A. Coordination: Coordinate the installation of with size, location and installation of service utilities.

B. Preinstallation Meeting: Conduct a preinstallation meeting one week prior to the start of the work of this section; require attendance by all affected installers.

C. Sequencing: Ensure that utility connections are achieved in an orderly and expeditious manner.

1.05 SUBMITTALS

A. See Section 013000 - Administrative Requirements for submittal procedures.

B. Welders Certificate: Include welders certification of compliance with AWS D1.1/D1.1M.

C. Product Data:

Upgrade 232113 - 3 Hydronic Piping

1. Include data on pipe materials, pipe fittings, valves, and accessories.

2. Provide manufacturers catalog information.

3. Indicate valve data and ratings.

4. Show grooved joint couplings, fittings, valves, and specialties on drawings and product submittals, specifically identified with the manufacturer's style or series designation.

D. Manufacturer's Installation Instructions: Indicate hanging and support methods, joining procedures.

E. Project Record Documents: Record actual locations of valves.

F. Maintenance Data: Include installation instructions, spare parts lists, exploded assembly views.

G. Maintenance Materials: Furnish the following for Owner's use in maintenance of project.

1. See Section 016000 - Product Requirements, for additional provisions.

1.06 QUALITY ASSURANCE

A. Manufacturer Qualifications: Company specializing in manufacturing products of the type specified in this section, with minimum three years of documented experience.

B. Installer Qualifications: Company specializing in performing work of the type specified in this section, with minimum three years of experience.

C. Provide all grooved joint couplings, fittings, valves, specialties, and grooving tools from a single manufacturer.

D. Date stamp all castings used for coupling housings, fittings, valve bodies, etc. for quality assurance and traceability.

E. Coupling Manufacturer:

1. Perform on-site training by factory-trained representative to the Contractor's field personnel in the proper use of grooving tools and installation of grooved joint products.

2. Periodic job site visits by factory-trained representative to ensure best practices in grooved joint installation.

F. Welder Qualifications: Certify in accordance with AWS D1.1/D1.1M.

1. Provide certificate of compliance from authority having jurisdiction, indicating approval of welders.

1.07 DELIVERY, STORAGE, AND HANDLING

A. Accept valves on site in shipping containers with labeling in place. Inspect for damage.

B. Provide temporary protective coating on cast iron and steel valves.

C. Provide temporary end caps and closures on piping and fittings. Maintain in place until installation.

D. Protect piping systems from entry of foreign materials by temporary covers, completing sections of the work, and isolating parts of completed system.

1.08 FIELD CONDITIONS

A. Do not install underground piping when bedding is wet or frozen.

PART 2 PRODUCTS

2.01 HYDRONIC SYSTEM REQUIREMENTS

A. Comply with ASME B31.9 and applicable federal, state, and local regulations.

B. Piping: Provide piping, fittings, hangers, and supports as required, as indicated, and as follows:

1. Where more than one piping system material is specified, provide joining fittings that are compatible with piping materials and ensure that the integrity of the system is not jeopardized.

2. Use non-conducting dielectric connections whenever jointing dissimilar metals.

a. Grooved mechanical connections and joints comply with AWWA C606.

1) Ductile Iron: Comply with ASTM A536, Grade 65-45-12.

Upgrade 232113 - 4 Hydronic Piping

2) Steel: Comply with ASTM A106/A106M, Grade B or ASTM A53/A53M.

b. Depending on pipe size, three or four flexible joints may be used in lieu of a flexible connector.

c. Use gaskets of molded synthetic rubber with central cavity, pressure-responsive configuration, and complying with ASTM D2000, Grade 2CA615A15B44F17Z for circulating medium up to maximum 230 degrees F or Grade M3BA610A15B44Z for circulating medium up to maximum 200 degrees F.

d. Provide steel coupling nuts and bolts complying with ASTM A183.

3. Provide pipe hangers and supports in accordance with ASME B31.9 or MSS SP-58 unless indicated otherwise.

C. Pipe-to-Valve and Pipe-to-Equipment Connections: Use flanges, unions, or grooved couplings to allow disconnection of components for servicing; do not use direct welded, soldered, or threaded connections.

1. Where grooved joints are used in piping, provide grooved valve/equipment connections if available; if not available, provide flanged ends and grooved flange adapters.

D. Valves: Provide valves where indicated:

1. Provide drain valves where indicated, and if not indicated, provide at least at main shut-off, low points of piping, bases of vertical risers, and at equipment. Use 3/4 inch gate valves with cap; pipe to nearest floor drain.

2. Isolate equipment using butterfly valves with lug end flanges or grooved mechanical couplings.

3. For throttling, bypass, or manual flow control services, use globe, ball, or butterfly valves.

4. For throttling and isolation service in chilled and condenser water systems, use only butterfly valves.

5. In heating water or chilled water systems, butterfly valves may be used interchangeably with gate and globe valves.

6. For shut-off and to isolate parts of systems or vertical risers, use gate, ball, or butterfly valves.

7. For throttling service, use plug cocks. Use non-lubricated plug cocks only when shut-off or isolating valves are also provided.

E. Welding Materials and Procedures: Comply with ASME BPVC-IX.

2.02 HEATING WATER PIPING, BURIED

A. Steel Pipe: ASTM A53/A53M, Schedule 40, black, with AWWA C105/A21.5 polyethylene jacket, or double layer, half-lapped polyethylene tape.

1. Fittings: ASTM A234/A234M, wrought steel welding type with double layer, half-lapped polyethylene tape.

2. Joints: Welded in accordance with AWS D10.12M/D10.12.

3. Casing: Closed glass cell insulation.

B. Copper Tube: ASTM B88 (ASTM B88M), Type K (A), annealed.

C. Polypropylene PP-RP (RCT) SDR11 Pipe: ASTM F2389.

2.03 HEATING WATER PIPING, ABOVE GRADE

A. Steel Pipe: ASTM A53/A53M, Schedule 40, black, using one of the following joint types:

1. Welded Joints: ASTM A234/A234M, wrought steel welding type fittings; AWS D10.12M/D10.12 welded.

2. Threaded Joints: ASME B16.3, malleable iron fittings.

3. Grooved Joints: AWWA C606 grooved pipe, fittings of same material, and mechanical couplings.

4. Mechanical Press Sealed Fittings: ASTM F3226/F3226M, ICC (IMC), and IAPMO (UMC) approved, with EPDM seals.

B. Copper Tube: ASTM B88 (ASTM B88M), Type L (B), drawn, using one of the following joint types:

Upgrade 232113 - 5 Hydronic Piping

1. Solder Joints: ASME B16.18 cast brass/bronze or ASME B16.22 solder wrought copper fittings.

a. Solder: ASTM B32 lead-free solder, HB alloy (95-5 tin-antimony) or tin and silver.

b. Braze: AWS A5.8M/A5.8 BCuP copper/silver alloy.

2. Grooved Joints: AWWA C606 grooved tube, fittings of same material, and copper-tube-dimension mechanical couplings.

3. Tee Connections: Mechanically extracted collars with notched and dimpled branch tube.

4. Mechanical Press Sealed Fittings: Double pressed type complying with ASME B16.22, utilizing EPDM, nontoxic synthetic rubber sealing elements.

C. Polypropylene PP-RP (RCT) SDR11 Pipe: ASTM F2389.

2.04 CHILLED WATER PIPING, BURIED

A. Steel Pipe: ASTM A53/A53M, Schedule 40, black with AWWA C105/A21.5 polyethylene jacket, or double layer, half-lapped polyethylene tape.

1. Fittings: ASTM A234/A234M, wrought steel welding type with double layer, half-lapped polyethylene tape.

2. Joints: Welded in accordance with AWS D10.12M/D10.12.

3. Casing: Closed glass cell insulation.

B. Copper Tube: ASTM B88 (ASTM B88M), Type K (A) annealed.

C. Polypropylene PP-RP (RCT) SDR11 Pipe: ASTM F2389.

2.05 CHILLED WATER PIPING, ABOVE GRADE

A. Steel Pipe: ASTM A53/A53M, Schedule 40, black; using one of the following joint types:

1. Welded Joints: ASTM A234/A234M, wrought steel welding type fittings; AWS D10.12M/D10.12 welded.

2. Threaded Joints: ASME B16.3, malleable iron fittings.

3. Grooved Joints: AWWA C606 grooved pipe, fittings of same material, and mechanical couplings.

4. Mechanical Press Sealed Fittings: ASTM F3226/F3226M, ICC (IMC), and IAPMO (UMC) approved, with EPDM seals.

B. Copper Tube: ASTM B88 (ASTM B88M), Type K (A), hard drawn; using one of the following joint types:

1. Solder Joints: ASME B16.18 cast brass/bronze or ASME B16.22 solder wrought copper fittings.

a. Solder: ASTM B32 lead-free solder, HB alloy (95-5 tin-antimony) or tin and silver.

b. Braze: AWS A5.8M/A5.8 BCuP copper/silver alloy.

2. Grooved Joints: AWWA C606 grooved tube, fittings of same material, and copper-tube-dimension mechanical couplings.

3. Tee Connections: Mechanically extracted collars with notched and dimpled branch tube.

4. Mechanical Press Sealed Fittings: Double pressed type complying with ASME B16.22, utilizing EPDM, nontoxic synthetic rubber sealing elements.

C. Polypropylene PP-RP (RCT) SDR11 Pipe: ASTM F2389.

2.06 CONDENSER WATER PIPING, BURIED

A. Steel Pipe: ASTM A53/A53M, Schedule 40, black with AWWA C105/A21.5 polyethylene jacket, or double layer, half-lapped polyethylene tape.

1. Fittings: ASTM A234/A234M, wrought steel welding type with double layer, half-lapped polyethylene tape.

2. Joints: Threaded for pipe 2 inches and under; AWS D10.12M/D10.12, welded for pipe over 2 inches.

B. Steel Pipe Sizes 12 Inches and Greater: ASTM A53/A53M, 3/8 inch wall, black with AWWA

C105/A21.5 polyethylene jacket, or double layer, half-lapped polyethylene tape.

Upgrade 232113 - 6 Hydronic Piping

1. Fittings: ASTM A234/A234M, wrought steel welding type with double layer, half-lapped polyethylene tape.

2. Joints: Welded in accordance with AWS D10.12M/D10.12.

C. Copper Tube: ASTM B88 (ASTM B88M), Type K (A) annealed.

1. Fittings: ASME B16.22, wrought copper.

2. Joints: Solder, lead-free, 95-5 tin-antimony, or tin and silver.

D. Ductile Iron Pipe: AWWA C151/A21.51.

E. Polypropylene PP-RP (RCT) SDR11 Pipe: ASTM F2389.

2.07 CONDENSER WATER PIPING, ABOVE GRADE

A. Steel Pipe: ASTM A53/A53M, Schedule 40, black.

1. Welded Joints: ASTM A234/A234M, wrought steel welding type fittings with finish matching piping; AWS D10.12M/D10.12 welded.

2. Threaded Joints: ASME B16.3, malleable iron fittings with finish matching piping.

3. Grooved Joints: AWWA C606 grooved pipe, fittings of same material, and mechanical couplings.

4. Mechanical Press Sealed Fittings: ASTM F3226/F3226M, ICC (IMC), and IAPMO (UMC) approved, with EPDM seals.

B. Steel Pipe Sizes 12 Inches and Greater: ASTM A53/A53M, 3/8 inch wall, black; using one of the following joint types:

1. Welded Joints: ASTM A234/A234M, wrought steel welding type fittings; AWS

D10.12M/D10.12 welded.

2. Threaded Joints: ASTM A536 ductile iron fittings.

3. Grooved Joints: AWWA C606 grooved pipe, fittings of same material, and mechanical couplings.

C. Copper Tube: ASTM B88 (ASTM B88M), Type K (A), drawn; using one of the following joint types:

1. Solder Joints: ASME B16.18 cast brass/bronze or ASME B16.22 solder wrought copper fittings.

a. Solder: ASTM B32 lead-free solder, HB alloy (95-5 tin-antimony) or tin and silver.

b. Braze: AWS A5.8M/A5.8 BCuP copper/silver alloy.

2. Grooved Joints: AWWA C606 grooved tube, fittings of same material, and copper-tube-dimension mechanical couplings.

D. Polypropylene PP-RP (RCT) SDR11 Pipe: ASTM F2389.

2.08 RADIANT HEATING PIPING

A. Cross-Linked Polyethylene (PEX) Pipe: ASTM F876 or ASTM F877.

B. Composite Polyethylene Pipe: Aluminum tube laminated between two layers of high density polyethylene.

1. Operating Pressure:

a. 125 psig at maximum 180 degrees F.

2. Fittings: Brass flared compression.

3. Joints: Fittings adapt to copper tubing or copper tube fittings, threaded pipe and fittings, and copper compression fittings.

C. Polypropylene PP-RP (RCT) SDR11 Pipe: ASTM F2389.

2.09 EQUIPMENT DRAINS AND OVERFLOWS

A. Steel Pipe: ASTM A53/A53M, Schedule 40 galvanized; using one of the following joint types:

1. Threaded Joints: Galvanized cast iron, or ASME B16.3 malleable iron fittings.

2. Grooved Joints: AWWA C606 grooved pipe, fittings of same material, and mechanical couplings.

Upgrade 232113 - 7 Hydronic Piping

B. Copper Tube: ASTM B88 (ASTM B88M), Type K (A), drawn; using one of the following joint types:

1. Solder Joints: ASME B16.18 cast brass/bronze or ASME B16.22 solder wrought copper fittings; ASTM B32 lead-free solder, HB alloy (95-5 tin-antimony) or tin and silver.

2. Grooved Joints: AWWA C606 grooved pipe, fittings of same material, and mechanical couplings.

C. Polypropylene PP-RP (RCT) SDR11 Pipe: ASTM F2389.

2.10 PIPE HANGERS AND SUPPORTS

A. Provide hangers and supports that comply with MSS SP-58.

1. If type of hanger or support for a particular situation is not indicated, select appropriate type using MSS SP-58 recommendations.

2. Hangers for Pipe Sizes 1/2 to 1-1/2 Inches: Malleable iron, adjustable swivel, split ring.

3. Hangers for Cold Pipe Sizes 2 Inches and Greater: Carbon steel, adjustable, clevis.

4. Hangers for Hot Pipe Sizes 2 to 4 Inches: Carbon steel, adjustable, clevis.

5. Hangers for Hot Pipe Sizes 6 Inches and Greater: Adjustable steel yoke, cast iron roll, double hanger.

6. Multiple or Trapeze Hangers: Steel channels with welded spacers and hanger rods.

7. Multiple or Trapeze Hangers for Hot Pipe Sizes 6 Inches and Greater: Steel channels with welded spacers and hanger rods, cast iron roll.

8. Wall Support for Pipe Sizes to 3 Inches: Cast iron hook.

9. Wall Support for Pipe Sizes 4 Inches and Greater: Welded steel bracket and wrought steel clamp.

10. Wall Support for Hot Pipe Sizes 6 Inches and Greater: Welded steel bracket and wrought steel clamp with adjustable steel yoke and cast iron roll.

11. Vertical Support: Steel riser clamp.

12. Floor Support for Cold Pipe: Cast iron adjustable pipe saddle, lock nut, nipple, floor flange, and concrete pier or steel support.

13. Floor Support for Hot Pipe Sizes to 4 Inches: Cast iron adjustable pipe saddle, lock nut, nipple, floor flange, and concrete pier or steel support.

14. Floor Support for Hot Pipe Sizes 6 Inches and Greater: Adjustable cast iron roll and stand, steel screws, and concrete pier or steel support.

15. Copper Pipe Support: Carbon steel ring, adjustable, copper plated.

16. Hanger Rods: Mild steel threaded both ends, threaded one end, or continuous threaded.

17. Inserts: Malleable iron case of galvanized steel shell and expander plug for threaded connection with lateral adjustment, top slot for reinforcing rods, lugs for attaching to forms;

size inserts to suit threaded hanger rods.

B. In grooved installations, use rigid couplings with offsetting angle-pattern bolt pads or with wedge-shaped grooves in header piping to permit support and hanging in accordance with

ASME B31.9.

C. Rooftop Supports for Low-Slope Roofs: Steel pedestals with bases that rest on top of roofing membrane, not requiring any attachment to the roof structure and not penetrating the roofing assembly, with support fixtures as specified; and as follows:

1. Bases: High-density polypropylene.

2. Base Sizes: As required to distribute load sufficiently to prevent indentation of roofing assembly.

3. Steel Components: Stainless steel or carbon steel hot-dip galvanized after fabrication in accordance with ASTM A123/A123M.

4. Attachment/Support Fixtures: As recommended by manufacturer, same type as indicated for equivalent indoor hangers and supports; corrosion-resistant material.

5. Height: Provide minimum clearance of 6 inches under pipe to top of roofing.

2.11 UNIONS, FLANGES, MECHANICAL COUPLINGS, AND DIELECTRIC CONNECTIONS

A. Unions for Pipe of 2 Inches and Less:

Upgrade 232113 - 8 Hydronic Piping

1. Ferrous Piping: 150 psi brass or malleable iron, threaded.

2. Copper Pipe: Bronze, soldered joints.

B. Flanges for Pipe 2 Inches and Greater:

1. Ferrous Piping: 150 psig forged steel, slip-on.

2. Copper Piping: Bronze.

3. Gaskets: 1/16 inch thick, preformed neoprene.

C. Mechanical Couplings for Grooved and Shouldered Joints: Two or more curved housing segments with continuous key to engage pipe groove, circular C-profile gasket, and bolts to secure and compress gasket.

1. Dimensions and Testing: In accordance with AWWA C606.

2. Mechanical Couplings: Comply with ASTM F1476.

3. Housing Material: Ductile iron complying with ASTM A536.

4. Gasket Material: EPDM suitable for operating temperature range from minus 30 degrees

F to 230 degrees F.

5. Bolts and Nuts: Hot dipped galvanized or zinc-electroplated steel.

6. When pipe is field grooved, provide coupling manufacturer's grooving tools.

D. Dielectric Connections:

1. Waterways:

a. Water impervious insulation barrier capable of limiting galvanic current to 1 percent of short circuit current in a corresponding bimetallic joint.

b. Dry insulation barrier able to withstand 600-volt breakdown test.

c. Construct of galvanized steel with threaded end connections to match connecting piping.

d. Suitable for the required operating pressures and temperatures.

2. Flanges:

a. Dielectric flanges with same pressure ratings as standard flanges.

b. Water impervious insulation barrier capable of limiting galvanic current to 1 percent of short circuit current in a corresponding bimetallic joint.

c. Dry insulation barrier able to withstand 600-volt breakdown test.

d. Construct of galvanized steel with threaded end connections to match connecting piping.

e. Suitable for the required operating pressures and temperatures.

2.12 BALL VALVES

A. Manufacturers:

1. Apollo Valves: www.apollovalves.com/#sle.

2. Substitutions: See Section 016000 - Product Requirements.

B. Up To and Including 2 Inches:

1. Brass two piece body, stainless steel ball, teflon seats and stuffing box ring, lever handle with balancing stops, solder ends with union.

C. Over 2 Inches:

1. Ductile iron body, chrome plated stainless steel ball, teflon or Virgin TFE seat and stuffing box seals, lever handle or gear operated, flanged ends, rated to 800 psi.

2.13 BUTTERFLY VALVES

A. Manufacturers:

1. Apollo Valves: www.apollovalves.com/#sle.

2. Victaulic Company: www.victaulic.com/#sle.

3. Substitutions: See Section 016000 - Product Requirements.

B. Body: Cast or ductile iron with resilient replaceable EPDM seat, wafer, lug, or grooved ends, extended neck.

Upgrade 232113 - 9 Hydronic Piping

C. Disc: Construct of aluminum bronze, chrome plated ductile iron, stainless steel, ductile iron with EPDM encapsulation, or Buna-N encapsulation.

D. Stem: Stainless steel with stem offset from the centerline to provide full 360-degree circumferential setting.

E. Operator: 10 position lever handle.

2.14 SWING CHECK VALVES

A. Manufacturers:

1. Apollo Valves: www.apollovalves.com/#sle.

2. Substitutions: See Section 016000 - Product Requirements.

B. Up To and Including 2 Inches:

1. Bronze body, bronze trim, bronze rotating swing disc, with composition disc, solder ends.

C. Over 2 Inches:

1. Iron body, bronze trim, stainless steel, bronze, or bronze faced rotating swing disc, renewable disc and seat, flanged or grooved ends.

2.15 SPRING LOADED CHECK VALVES

A. Manufacturers:

1. Shurjoint Piping Products, Inc: www.shurjoint.com/#sle.

2. Victaulic Company: www.victaulic.com/#sle.

3. Substitutions: See Section 016000 - Product Requirements.

B. Iron body, bronze trim, split plate, hinged with stainless steel spring, resilient seal bonded to body, wafer, or threaded lug ends.

2.16 PRESSURE INDEPENDENT TEMPERATURE CONTROL VALVES AND BALANCING VALVES

A. Manufacturers:

1. Danfoss; ______: www.danfoss.com/#sle.

2. Substitutions: See Section 016000 - Product Requirements.

B. Control Valves: Factory-fabricated pressure independent with internal differential pressure regulator (DPRV), which automatically adjusts to normal changes in system pressure and provides 100 percent control valve authority at all positions of the valve.

1. Maintain proportional and linear flow coil characteristics.

2. PICV to accurately control the flow from 0 to 100 percent full rated flow with an operating pressure differential range of 3 to 60 psig.

3. Provide ANSI/FCI 70-2 Class 4 shut-off on all sizes and field serviceable.

4. Provide control valve to incorporate control, balancing, and flow limiting. Hydronic system pressure independent control valve bodies to comply with ASME B16.34 or ASME B16.15 pressure and temperature class ratings based on the design operating temperature and 150 percent of the system design operating pressure and have the following characteristics:

a. 2 NPS and Smaller: Class 150 bronze or brass body with union connections, stainless steel trim, stainless steel rising stem, stainless steel disc or ball, and screwed ends with backseating capacity repackable under pressure.

b. 2-1/2 NPS and Larger: Class 125 iron or ductile iron body, stainless steel trim, stainless steel rising stem, stainless steel disc or ball, flanged ends with backseating capacity repackable under pressure.

c. Pressure Control Seat: Brass construction with vulcanized EPDM.

d. Sizing: Line-size.

e. Fittings and Components: All fittings and components to meet ANSI standards and be compatible with readily available components. 8-inch valves and above to be provided with proper companion flanges.

f. Close-Off (Differential) Pressure Rating: Combination of actuator, DPRV action, and trim to provide a minimum close-off pressure rating of 150 percent of total system

Upgrade 232113 - 10 Hydronic Piping

(pump) head. Provide actuator from the same manufacturer as the pressure independent control valve.

C. Electronic Actuators: Direct-mounted, self-calibrating type designed for minimum 60,000 full-stroke cycles at rated force.

D. Provide actuator with visible position indication. Fail positions on power failure to include in-place, open or closed as indicated in the controls specifications.

1. Valves: Sized for maximum circuit flow rate and nominally, line-sized.

2. Overload Protection: Electronic overload or digital rotation-sensing circuitry.

3. Fail-Safe Operation: Mechanical, spring-return mechanism or capacitance return.

4. Power Requirements (Two-Position Spring Return): 24 VAC.

5. Power Requirements (Modulating): Maximum 10 VA at 24 VAC or 8 watts at 24 VDC.

6. Proportional Signal: 0 to 10 VDC or 2 to 10 VDC or 4 to 20 mA, and 2 to 10 VDC position feedback signal.

7. Provide plenum-rated actuators for service above ceilings to possess UL listings and approvals.

8. Temperature Rating: 40 to 104 degrees F.

2.17 FLOW CONTROLS

A. Manufacturers:

1. Griswold Controls: www.griswoldcontrols.com/#sle.

2. Hays Fluid Controls: www.haysfluidcontrols.com/#sle.

3. ITT Bell & Gossett: www.bellgossett.com/#sle.

4. Taco, Inc: www.taco-hvac.com/#sle.

5. Substitutions: See Section 016000 - Product Requirements.

B. Construction: Class 125, Brass or bronze body with union on inlet and outlet, temperature and pressure test plug on inlet and outlet, blowdown/backflush drain.

C. Calibration: Control flow within 10 percent of selected rating, over operating pressure range of 10 times minimum pressure required for control, minimum pressure 2 psi.

PART 3 EXECUTION

3.01 PREPARATION

A. Ream pipe and tube ends. Remove burrs. Bevel plain end ferrous pipe.

B. Prepare pipe for grooved mechanical joints as required by coupling manufacturer.

C. Remove scale and dirt on inside and outside before assembly.

D. Prepare piping connections to equipment using jointing system specified.

E. Keep open ends of pipe free from scale and dirt. Protect open ends with temporary plugs or caps.

F. After completion, fill, clean, and treat systems. See Section 232500 for additional requirements.

3.02 INSTALLATION

A. Install in accordance with manufacturer's instructions.

B. Install heating water, glycol, chilled water, condenser water, and engine exhaust piping to

ASME B31.9 requirements.

C. Route piping in orderly manner, parallel to building structure, and maintain gradient.

D. Install piping to conserve building space and to avoid interference with use of space.

E. Group piping whenever practical at common elevations.

F. Sleeve pipe passing through partitions, walls, and floors.

G. Install firestopping to preserve fire resistance rating of partitions and other elements, using materials and methods specified.

Upgrade 232113 - 11 Hydronic Piping

H. Slope piping and arrange to drain at low points.

I. Install piping to allow for expansion and contraction without stressing pipe, joints, or connected equipment. See Section 230516.

1. Flexible couplings may be used in header piping to accommodate thermal growth, thermal contraction in lieu of expansion loops.

2. Use flexible couplings in expansion loops.

J. Grooved Joints:

1. Install in accordance with the manufacturer's latest published installation instructions.

2. Gaskets to be suitable for the intended service, molded, and produced by the coupling manufacturer.

K. Inserts:

L. Provide clearance in hangers and from structure and other equipment for installation of insulation and access to valves and fittings. See Section 230719.

M. Provide access where valves and fittings are not exposed. Coordinate size and location of access doors with Section 083100 .

N. Use eccentric reducers to maintain top of pipe level.

O. Where pipe support members are welded to structural building framing, scrape, brush clean, and apply one coat of zinc-rich primer to welds.

P. Prepare unfinished pipe, fittings, supports, and accessories, ready for finish painting. See

Section 099123.

Q. Install valves with stems upright or horizontal, not inverted.

R. All individual dorm rooms shall have dedicated isolation valves.

S. Provide post construction flush of the geothermal piping system. Colorado Mesa Unversity

Facility personnel shall witness flushing of the system.

3.03 SCHEDULES

A. Hanger Spacing for Copper Tubing.

1. 1/2 Inch and 3/4 inch: Maximum span, 5 feet; minimum rod size, 1/4 inch.

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

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

4. 2-1/2 Inches: Maximum span, 9 feet; minimum rod size, 3/8 inch.

5. 3 Inches: Maximum span, 10 feet; minimum rod size, 3/8 inch.

6. 4 Inches: Maximum span, 12 feet; minimum rod size, 1/2 inch.

B. Hanger Spacing for Steel Piping.

1. 1/2 Inch, 3/4 Inch, and 1 Inch: Maximum span, 7 feet; minimum rod size, 1/4 inch.

2. 1-1/4 Inches: Maximum span, 8 feet; minimum rod size, 3/8 inch.

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

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

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

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

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

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

C. Hanger Spacing for Plastic Piping.

1. 1/2 Inch: Maximum span, 42 inches; minimum rod size, 1/4 inch.

2. 3/4 Inch: Maximum span, 45 inches; minimum rod size, 1/4 inch.

3. 1 Inch: Maximum span, 51 inches; minimum rod size, 1/4 inch.

4. 1-1/4 Inches: Maximum span, 57 inches; minimum rod size, 3/8 inch.

5. 1-1/2 Inches: Maximum span, 63 inches; minimum rod size, 3/8 inch.

6. 2 Inches: Maximum span, 69 inches; minimum rod size, 3/8 inch.

7. 3 Inches: Maximum span, 7 feet; minimum rod size, 3/8 inch.

Upgrade 232113 - 12 Hydronic Piping

8. 4 Inches: Maximum span, 8 feet; minimum rod size, 1/2 inch.

9. 6 Inches: Maximum span, 10 feet; minimum rod size, 1/2 inch.

10. 8 Inches: Maximum span, 11 feet; minimum rod size, 5/8 inch.

END OF SECTION

232113 - Hydronic Piping