232114-RIB-Hydronic Specialties-12-24-2025.pdf

25-388 CBI HVAC and Lighting Upgrade 232114 - 1 Hydronic Specialties

SECTION 232114

HYDRONIC SPECIALTIES

PART 1 GENERAL

1.01 SECTION INCLUDES

A. Compression tanks.

B. Expansion tanks.

C. Air vents.

D. Air separators.

E. Strainers.

F. Suction diffusers.

G. Pump connectors.

H. Combination pump discharge valves.

I. Pressure-temperature test plugs.

J. Balancing valves.

K. Automatic flow control valves.

L. Flow meters.

M. Relief valves.

N. Pressure reducing valves.

O. Glycol system.

1.02 RELATED REQUIREMENTS

A. Section 221119 - Domestic Water Piping Specialties: Backflow preventers.

B. Section 232113 - Hydronic Piping.

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

1.03 REFERENCE STANDARDS

A. ASME B16.1 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250; 2020.

B. ASME B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 Through NPS 24 Metric/Inch

Standard; 2025.

C. ASME B16.11 - Forged Fittings, Socket-Welding and Threaded; 2021.

D. ASME BPVC-VIII-1 - Boiler and Pressure Vessel Code, Section VIII, Division 1: Rules for

Construction of Pressure Vessels; 2025, with Errata .

1.04 ADMINISTRATIVE REQUIREMENTS

A. 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. Product Data: Provide product data for manufactured products and assemblies required for this project. Include component sizes, rough-in requirements, service sizes, and finishes.

Include product description and model.

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

D. Manufacturer's qualification statement.

E. Maintenance Data: Include installation instructions, assembly views, lubrication instructions, and replacement parts list.

Upgrade 232114 - 2 Hydronic Specialties

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

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

2. Extra Glycol Solution: One container, 1 gallon size.

1.06 QUALITY ASSURANCE

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

1.07 DELIVERY, STORAGE, AND HANDLING

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

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

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

PART 2 PRODUCTS

2.01 COMPRESSION TANKS

A. Manufacturers:

1. Amtrol Inc: www.amtrol.com/#sle.

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

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

4. Substitutions: See Section 016000 - Product Requirements.

B. Construction: Closed, welded steel, tested, and stamped in accordance with ASME BPVC-VIII- 1; cleaned, prime coated, and supplied with steel support saddles; with tappings for installation of accessories.

1. Pressure Rating: 100 psi.

C. Gauge Glass Set: Brass compression stops, guard, and 3/4 inch red line glass, maximum 24 inches length, long enough to cover tank for 2 inches above bottom to 2 inches below top.

D. Quick Connect Air Inlet:

1. Compressed Air: 72 inches of 1/4 inch diameter braided reinforced air hose, air chuck, check valve, and shut-off valve on supply from control air compressor.

2. Expansion Tank: Inlet tire check valve, manual air vent, tank drain, and pressure relief valve.

E. Automatic Cold Water Fill Assembly: Pressure reducing valve, reduced-pressure-principle backflow preventer, test cocks, strainer, vacuum breaker, and valved by-pass.

1. See Section 221119 for backflow preventer specifications.

2.02 EXPANSION TANKS

A. Manufacturers:

1. Amtrol Inc: www.amtrol.com/#sle.

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

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

4. Substitutions: See Section 016000 - Product Requirements.

B. Construction: Welded steel, tested and stamped in accordance with ASME BPVC-VIII-1;

supplied with National Board Form U-1, adjustable flexible EPDM diaphragm or bladder seal factory precharged to 12 psi, and steel support stand.

C. Automatic Cold Water Fill Assembly: Pressure reducing valve, reduced-pressure-principle backflow preventer, test cocks, strainer, vacuum breaker, and valved by-pass.

1. See Section 221119 for backflow preventer specifications.

2.03 AIR VENTS

A. Manufacturers:

1. Armstrong International, Inc: www.armstronginternational.com/#sle.

Upgrade 232114 - 3 Hydronic Specialties

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

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

4. Substitutions: See Section 016000 - Product Requirements.

B. Manual Air Vent: Short vertical sections of 2-inch diameter pipe to form air chamber, with 1/8 inch brass needle valve at top of chamber.

C. Float Air Vent:

1. Brass or semi-steel body, copper, polypropylene, or solid non-metallic float, stainless steel valve and valve seat; suitable for system operating temperature and pressure; with isolating valve.

2. Cast iron body and cover, float, bronze pilot valve mechanism suitable for system operating temperature and pressure; with isolating valve.

D. Hygroscopic Air Vent:

1. Brass with hygroscopic fiber discs, vent ports, adjustable cap for manual shut-off, and integral spring-loaded ball check valve.

E. Maximum Fluid Pressure: 150 psi.

F. Maximum Fluid Temperature: 250 degrees F.

2.04 AIR SEPARATORS

A. In-line Air Separators:

1. Manufacturers:

a. Armstrong International, Inc: www.armstronginternational.com/#sle.

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

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

d. Substitutions: See Section 016000 - Product Requirements.

2. Cast iron for sizes 1-1/2 inch and smaller, or steel for sizes 2 inch and larger; tested and stamped in accordance with ASME BPVC-VIII-1; for 125 psi operating pressure.

3. Maximum Allowable Service Temperature: 450 degrees F.

B. Centrifugal Air Separators/Strainers:

1. Manufacturers:

a. Armstrong International, Inc: www.armstronginternational.com/#sle.

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

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

d. Substitutions: See Section 016000 - Product Requirements.

2. Primed steel body, tested and stamped in accordance with ASME BPVC-VIII-1 with integral bronze strainer, tangential flanged inlet and outlet connections, and internal stainless steel air collector tube.

3. Maximum Service Flow and Pressure: 16 gpm at 125 psi.

2.05 STRAINERS

A. Manufacturers:

1. Armstrong International, Inc: www.armstronginternational.com/#sle.

2. Flexicraft Industries: www.flexicraft.com/#sle.

3. The Metraflex Company; LPD Y Strainer: www.metraflex.com/#sle.

4. Substitutions: See Section 016000 - Product Requirements.

B. Size 2 inch and Under:

1. Provide threaded, grooved, or sweat brass or iron body for up to 175 psi working pressure, Y-pattern strainer with 1/32 inch stainless steel perforated screen.

C. Size 2-1/2 inch to 4 inch:

1. Provide flanged or grooved iron body for 175 psi working pressure, Y pattern with 1/16 inch or 3/64 inch stainless steel perforated screen.

2. Body Material by Fluid Service:

Upgrade 232114 - 4 Hydronic Specialties

D. Size 5 inch and Larger:

1. Provide flanged or grooved iron body for 175 psi working pressure, basket pattern with 1/8 inch stainless steel perforated screen.

2. Liquid Fluid Service: Up to 285 psi at 100 degrees F.

2.06 SUCTION DIFFUSERS

A. Manufacturers:

1. Anvil International: www.anvilintl.com/#sle.

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

3. Victaulic Company of America: www.victaulic.com/#sle.

4. Substitutions: See Section 016000 - Product Requirements.

B. Accessories: Adjustable foot support, blowdown tapping in bottom, gauge tapping in side.

2.07 PUMP CONNECTORS

A. Manufacturers:

1. Anvil International; AnviFlex: www.anvilintl.com/#sle.

2. Ferguson Enterprises Inc: www.fnw.com/#sle.

3. The Metraflex Company; Vane Flex: www.metraflex.com/#sle.

4. Substitutions: See Section 016000 - Product Requirements.

B. Flexible Connectors: Flanged, braided type with wetted components of stainless steel, sized to match piping.

1. Maximum Operating Service: 150 psi at 120 degrees F.

2. Accommodate the Following:

a. Axial Deflection in Compression and Expansion: .

b. Lateral Movement: .

c. Angular Rotation: 15 degrees.

d. Force developed by 1.5 times specified maximum allowable operating pressure.

3. End Connections: Same as specified for pipe jointing.

4. Provide pump connector with integral vanes to reduce turbulent flow.

5. Provide necessary accessories including, but not limited to, swivel joints.

2.08 COMBINATION PUMP DISCHARGE VALVES

A. Manufacturers:

1. Anvil International: www.anvilintl.com/#sle.

2. Crane Co.: www.craneco.com/#sle.

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

4. Victaulic Company of America: www.victaulic.com/#sle.

5. Substitutions: See Section 016000 - Product Requirements.

B. Quarter-Turn Plug Type: Flanged cast-iron body with bolt-on bonnet, position indicator, stainless steel stem, backflow preventer, memory stop, metering connectors, bubble-tight shutoff, and wrench-adjustable plug flow regulator.

2.09 PRESSURE-TEMPERATURE TEST PLUGS

A. Manufacturers:

1. Ferguson Enterprises Inc: www.fnw.com/#sle.

2. Peterson Equipment Company Inc: www.petesplug.com/#sle.

3. Sisco Manufacturing Company Inc: www.siscomfg.com/#sle.

4. Substitutions: See Section 016000 - Product Requirements.

B. Construction: Brass body designed to receive temperature or pressure probe with removable protective cap, and Neoprene rated for minimum 200 degrees F.

C. Application: Use extended length plugs to clear insulated piping.

2.10 BALANCING VALVES

Upgrade 232114 - 5 Hydronic Specialties

A. Manufacturers:

1. Armstrong International, Inc: www.armstronginternational.com/#sle.

2. Ferguson Enterprises Inc: www.fnw.com/#sle.

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

4. Oventrop Corporation; Hydrocontrol F: www.oventrop.com/#sle.

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

6. Substitutions: See Section 016000 - Product Requirements.

B. Size 2 inch and Smaller:

1. Provide ball or globe style with flow balancing, flow measurement, and shut-off capabilities, memory stops, minimum of two metering ports and NPT threaded or soldered connections.

2. Metal construction materials consist of bronze or brass.

3. Non-metal construction materials consist of Teflon, EPDM, or engineered resin.

C. Size 2-1/2 inch and Larger:

1. Provide ball, globe, or butterfly style with flow balancing, flow measurement, and shut-off capabilities, memory stops, minimum of two metering ports and flanged, grooved, or weld end connections.

D. Valve body construction materials consist of cast iron, carbon steel, or ductile iron.

1. Internal components construction materials consist of brass, aluminum bronze, bronze, Teflon, EPDM, NORYL, or engineered resin.

2.11 AUTOMATIC FLOW CONTROL VALVES

A. Manufacturers:

1. Armstrong International: www.armstronginternational.com/#sle.

2. Hays Fluid Controls; Mesurflo Balancing Valve: www.haysfluidcontrols.com/#sle.

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

4. Substitutions: See Section 016000 - Product Requirements.

B. Construction:

1. Brass, bronze, or iron body with union on inlet and outlet, temperature and pressure test plug on inlet and outlet with blowdown/backflush drain.

2. Built-in lug-type outlet butterfly valve with 2-position handle.

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.

D. Control Mechanism: Provide stainless steel or nickel-plated, brass piston or regulator cup, operating against stainless steel helical or wave formed spring or elastomeric diaphragm and polyphenylsulfone orifice plate.

2.12 FLOW METERS

A. Manufacturers:

1. Dwyer Instruments, Inc: www.dwyer-inst.com/#sle.

2. EMCO Flow Systems: www.emcoflow.com/#sle.

3. Substitutions: See Section 016000 - Product Requirements.

B. Orifice principle by-pass circuit with direct reading gauge, soldered or flanged piping connections for 125 psi working pressure, with shut off valves, and drain and vent connections.

C. Direct reading with insert pitot tube, threaded coupling, for 150 psi working pressure, maximum 240 degrees F, 5 percent accuracy.

D. Cast iron, wafer type, orifice insert flow meter for 250 psi working pressure, with read-out valves equipped with integral check valves with gasketed caps.

2.13 RELIEF VALVES

A. Manufacturers:

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

Upgrade 232114 - 6 Hydronic Specialties

2. Armstrong International, Inc: www.armstronginternational.com/#sle.

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

4. Substitutions: See Section 016000 - Product Requirements.

B. Bronze body, teflon seat, stainless steel stem and springs, automatic, direct pressure actuated, capacities ASME certified and labelled.

2.14 PRESSURE REDUCING VALVES

A. Manufacturers:

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

2. Armstrong International, Inc: www.armstronginternational.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. Operation: Automatically feeds make-up water to the hydronic system whenever pressure in the system drops below the pressure setting of the valve. Refer to Section 232113.

C. Materials of Construction:

1. Valve Body: Constructed of bronze, cast iron, brass, or iron.

2. Internal Components: Construct of stainless steel or brass and engineered plastics or composition material.

D. Connections:

1. NPT threaded: 0.50 inch or 0.75 inch.

2. Soldered: 0.50 inch.

E. Provide integral check valve and strainer.

F. Maximum Inlet Pressure: 400 psi.

G. Maximum Fluid Temperature: 180 degrees F.

H. Adjustable Pressure Range: From 10 to 45 psi, set to 25 psi.

2.15 PRESSURE INDEPENDENT VALVES

A. Manufacturers:

1. Griswold Controls LLC; PIC-V: www.griswoldcontrols.com/#sle.

2. Oventrop Corporation; Cocon QTZ: www.oventrop.com/#sle.

3. Substitutions: See Section 016000 - Product Requirements.

B. Size 2 inch and Smaller:

1. Provide ball or globe style with flow balancing, flow measurement, and shut-off capabilities, memory stops, minimum of two metering ports and NPT threaded or soldered connections.

2. Metal construction materials consist of bronze or brass.

3. Non-metal construction materials consist of Teflon, EPDM, or engineered resin.

C. Size 2-1/2 inch and Larger:

1. Provide ball, globe, or butterfly style with flow balancing, flow measurement, and shut-off capabilities, memory stops, minimum of two metering ports and flanged, grooved, or weld end connections.

2. Valve body construction materials consist of cast iron, carbon steel, or ductile iron.

3. Internal components construction materials consist of brass, aluminum bronze, bronze, Teflon, EPDM, NORYL, or engineered resin.

2.16 AUTOMATIC FLOW LIMITING VALVES

A. Manufacturers:

1. Griswold Controls LLC; Isolator R Valve: www.griswoldcontrols.com/#sle.

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

3. Substitutions: See Section 016000 - Product Requirements.

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B. Size 1/2 inch to 14 inch:

1. Provide ball or globe style with flow balancing, flow measurement, and shut-off capabilities, memory stops, minimum of two metering ports and NPT threaded or soldered connections.

2. Metal construction materials consist of bronze or brass.

3. Non-metal construction materials consist of Teflon, EPDM, or engineered resin.

C. Size 2-1/2 inch to 24 inch:

1. Comply with ASME B16.5.

2. Class: 150.

3. Provide ball, globe, butterfly, or wafer style with flow balancing, flow measurement, and shut-off capabilities, memory stops, minimum of two metering ports and flanged, grooved, or weld end connections.

4. Valve body construction materials consist of cast iron, carbon steel, ductile iron, or gray iron.

5. Internal components construction materials consist of brass, aluminum bronze, bronze, Teflon, EPDM, NORYL, or engineered resin.

2.17 GLYCOL SYSTEM

A. Pump System:

1. Storage: 15 gal polypropylene tank with bolt-removable hinged solid cover and enamel coated carbon steel tank-stand.

2. Pump:

a. Thermally protected 1/4 hp motor at 115 to 120 VAC, single phase rated for indoor service.

b. Maximum Service Operation: 100 psi at 85 degrees F.

3. Mechanical Accessories: System isolation valves, strainer, and pressure gauges.

4. Control Panel:

a. Fused single-point system connection rated at 115 to 120 VAC, single phase.

b. Interface: Hand switches with indicating lights for ON, FAULT, and LOW LEVEL.

c. Pressure Switch: Panel-mounted and prewired for 10 psi cut-in and 40 psi cut-out, adjustable.

d. Low Level Cut-Off Switch: Prewired to shut-down unit upon activation. Tank-side mounted.

5. Pressure Relief Valve: System-mounted brass valve tubed from pump discharge side into tank with adjustable setpoint between 20 psi and 150 psi.

B. Glycol Solution:

1. Water-based solution mix containing 30 percent ethylene glycol by volume required for cooling or heating system operating temperature range.

2. Cooling or heating System Operating Temperature Range: Between freezing and boiling points of 3 and 220 degees F at 14.7 psia.

C. Air Pressure Reducing Station: Pressure reducing valve with shut-off valves, strainer, check valve, and needle valve bypass.

PART 3 EXECUTION

3.01 INSTALLATION

A. Install specialties and equipment in accordance with manufacturer's instructions.

B. Where large air quantities can accumulate, provide enlarged air collection standpipes.

C. Provide manual air vents at system high points and as indicated.

D. For automatic air vents in ceiling spaces or other concealed locations, provide vent tubing to nearest drain.

E. Provide air separator on suction side of system circulation pump and connect to expansion tank.

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F. Provide valved drain and hose connection on strainer blowdown connection.

G. Provide pump suction fitting on suction side of base-mounted centrifugal pumps where indicated. Remove temporary strainers after cleaning systems.

H. Provide combination pump discharge valve on discharge side of base mounted centrifugal pumps where indicated.

I. Support pump fittings with floor-mounted pipe and flange supports.

J. Provide radiator valves on water inlet to terminal heating units such as radiation, unit heaters, and fan coil units.

K. Provide radiator balancing valves on water outlet from terminal heating units such as radiation, unit heaters, and fan coil units.

L. Provide relief valves on pressure tanks, low-pressure side of reducing valves, heat exchangers, and expansion tanks.

M. Select system relief valve capacity so that it is greater than make-up pressure reducing valve capacity. Select equipment relief valve capacity to exceed rating of connected equipment.

N. Pipe relief valve outlet to nearest floor drain.

O. Where one line vents several relief valves, make cross-sectional area equal to sum of individual vent areas.

P. Clean and flush glycol system before adding glycol solution, see Section 232500.

Q. Feed glycol solution to system through make-up line with pressure regulator, venting system high points.

R. Feed glycol solution to system through make-up line with pressure regulator, venting system high points. Set to fill at 12 psi.

S. Feed glycol solution to system through make-up line with pressure regulator, venting system high points. Pressure system cold at 5 psi.

T. Perform tests determining strength of glycol and water solution and submit written test results.

3.02 MAINTENANCE

A. See Section 017000 - Execution Requirements for additional requirements relating to maintenance service.

B. Provide service and maintenance of glycol system for one year from date of Substantial

Completion at no extra charge to Owner.

C. Perform monthly visit to make glycol fluid concentration analysis on site with refractive index measurement instrument. Report findings in detail in writing, including analysis and amounts of glycol or water added.

D. Explain corrective actions to Owner's maintenance personnel in person.

END OF SECTION

232114 - Hydronic Specialties