230523 SF - GENERAL-DUTY VALVES FOR HVAC PIPING.DOC

UNIT TRAININGEQUIPMENT SITE ADD/ALT

Copyright 2009 by The American Institute of Architects (AIA)

Exclusively published and distributed by Architectural Computer Services, Inc. (ARCOM) for the AIA

SECTION 230523 - GENERAL-DUTY VALVES FOR HVAC PIPING

Revise this Section by deleting and inserting text to meet Project-specific requirements.

Verify that Section titles referenced in this Section are correct for this Project's Specifications; Section titles may have changed.

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Brass ball valves.

2. Bronze ball valves.

3. High-performance butterfly valves.

4. Bronze swing check valves.

5. Bronze gate valves.

6. Bronze globe valves.

B. Related Sections:

Retain Sections in subparagraphs below that contain requirements Contractor might expect to find in this Section but are specified in other Sections.

1. Division 23 HVAC piping Sections for specialty valves applicable to those Sections only.

2. Division 23 Section "Identification for HVAC Piping and Equipment" for valve tags and schedules.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of valve indicated.

1.3 QUALITY ASSURANCE

A. Source Limitations for Valves: Obtain each type of valve from single source from single manufacturer.

B. ASME Compliance: ASME B16.10 and ASME B16.34 for ferrous valve dimensions and design criteria.

PART 2 - PRODUCTS

2.1 GENERAL REQUIREMENTS FOR VALVES

HVAC valve applications specified in this Section are limited to NPS 24 (DN 600).

A. Refer to HVAC valve schedule articles for applications of valves.

Caution: Revise pressure ratings and insert temperature ratings in valve articles if valves with higher ratings are required. Valves larger than NPS 12 (DN 300) typically have a lower pressure rating than smaller valves. Verify pressure requirements for large valves.

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

C. Valve Sizes: Same as upstream piping unless otherwise indicated.

D. Valve Actuator Types:

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

2. Handlever: For quarter-turn valves NPS 6 and smaller except plug valves.

3. Chainwheel: Device for attachment to valve handwheel, stem, or other actuator; of size and with chain for mounting height, as indicated in the "Valve Installation" Article.

E. Valves in Insulated Piping: With 2-inch stem extensions and the following features:

1. Gate Valves: With rising stem.

2. Ball Valves: With extended operating handle of non-thermal-conductive material, and protective sleeve that allows operation of valve without breaking the vapor seal or disturbing insulation.

3. Butterfly Valves: With extended neck.

F. Valve-End Connections:

1. Flanged: With flanges according to ASME B16.1 for iron valves.

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

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

2.2 BRASS BALL VALVES

Retain one or more of five paragraphs in this article if brass ball valves are required. MSS SP-110 covers both brass and bronze, copper-alloy ball valves NPS 1/4 to NPS 4 (DN 8 to DN 100). See the Evaluations and manufacturers' catalogs before selecting either brass or bronze ball valves or including both.

A. One-Piece, Reduced-Port, Brass Ball Valves with Brass Trim:

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

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

a. Kitz Corporation.

b. Approved equal.

2. Description:

a. Standard: MSS SP-110.

b. CWP Rating: 400 psig.

c. Body Design: One piece.

d. Body Material: Forged brass.

e. Ends: Threaded.

f. Seats: PTFE or TFE.

g. Stem: Brass.

h. Ball: Chrome-plated brass.

i. Port: Reduced.

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

2.3 BRONZE BALL VALVES

Retain one or more of six paragraphs in this article if bronze ball valves are required. MSS SP-110 covers both brass and bronze, copper-alloy ball valves NPS 1/4 to NPS 4 (DN 8 to DN 100). See the Evaluations and manufacturers' catalogs before selecting either brass or bronze ball valves or including both.

A. One-Piece, Reduced-Port, Bronze Ball Valves with Bronze Trim:

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

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

a. American Valve, Inc.

b. Conbraco Industries, Inc.; Apollo Valves.

c. NIBCO INC.

2. Description:

a. Standard: MSS SP-110.

b. CWP Rating: 400 psig.

c. Body Design: One piece.

d. Body Material: Bronze.

e. Ends: Threaded.

f. Seats: PTFE or TFE.

g. Stem: Bronze.

h. Ball: Chrome-plated brass.

i. Port: Reduced.

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

2.4 HIGH-PERFORMANCE BUTTERFLY VALVES

Retain one or both paragraphs in this article if high-performance butterfly valves are required. MSS SP-68, for high-pressure valves, covers high-performance butterfly valves NPS 3 to NPS 48 (DN 80 to DN 1200).

A. Class 150, Single-Flange, High-Performance Butterfly Valves:

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

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

a. Crane Co.; Crane Valve Group; Flowseal.

b. NIBCO INC.

c. Tyco Valves & Controls; a unit of Tyco Flow Control.

2. Description:

a. Standard: MSS SP-68.

b. CWP Rating: 285 psig at 100 deg F.

c. Body Design: Lug type; suitable for bidirectional dead-end service at rated pressure without use of downstream flange.

d. Body Material: Carbon steel, cast iron, ductile iron, or stainless steel.

e. Seat: Reinforced PTFE or metal.

f. Stem: Stainless steel; offset from seat plane.

g. Disc: Carbon steel.

h. Service: Bidirectional.

2.5 BRONZE SWING CHECK VALVES

Retain one or more of four paragraphs in this article if bronze swing check valves are required. MSS SP-80 covers bronze swing check valves NPS 1/4 to NPS 3 (DN 8 to DN 80).

A. Class 125, Bronze Swing Check Valves with Bronze Disc:

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

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

a. Crane Co.; Crane Valve Group; Crane Valves.

b. NIBCO INC.

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

2. Description:

a. Standard: MSS SP-80, Type 3.

b. CWP Rating: 200 psig.

c. Body Design: Horizontal flow.

d. Body Material: ASTM B 62, bronze.

e. Ends: Threaded.

f. Disc: Bronze.

2.6 BRONZE GATE VALVES

Retain one or more of four paragraphs in this article if bronze gate valves are required. MSS SP-80 covers bronze gate valves NPS 1/4 to NPS 3 (DN 8 to DN 80).

A. Class 125, NRS Bronze Gate Valves:

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

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

a. Crane Co.; Crane Valve Group; Crane Valves.

b. NIBCO INC.

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

2. Description:

a. Standard: MSS SP-80, Type 1.

b. CWP Rating: 200 psig.

c. Body Material: ASTM B 62, bronze with integral seat and screw-in bonnet.

d. Ends: Threaded or solder joint.

e. Stem: Bronze.

f. Disc: Solid wedge; bronze.

g. Packing: Asbestos free.

h. Handwheel: Malleable iron, bronze, or aluminum.

2.7 BRONZE GLOBE VALVES

Retain one or more of three paragraphs in this article if bronze globe valves are required. MSS SP-80 covers bronze globe valves NPS 1/4 to NPS 3 (DN 8 to DN 80).

A. Class 125, Bronze Globe Valves with Bronze Disc:

See Editing Instruction No. 1 in the Evaluations for cautions about naming manufacturers. See Division 01 Section "Product Requirements."

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

a. Crane Co.; Crane Valve Group; Crane Valves.

b. NIBCO INC.

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

2. Description:

a. Standard: MSS SP-80, Type 1.

b. CWP Rating: 200 psig.

c. Body Material: ASTM B 62, bronze with integral seat and screw-in bonnet.

d. Ends: Threaded or solder joint.

e. Stem and Disc: Bronze.

f. Packing: Asbestos free.

g. Handwheel: Malleable iron, bronze, or aluminum.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine valve interior for cleanliness, freedom from foreign matter, and corrosion. Remove special packing materials, such as blocks, used to prevent disc movement during shipping and handling.

B. Operate valves in positions from fully open to fully closed. Examine guides and seats made accessible by such operations.

C. Examine threads on valve and mating pipe for form and cleanliness.

D. Examine mating flange faces for conditions that might cause leakage. Check bolting for proper size, length, and material. Verify that gasket is of proper size, that its material composition is suitable for service, and that it is free from defects and damage.

E. Do not attempt to repair defective valves; replace with new valves.

3.2 VALVE INSTALLATION

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

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

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

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

E. Install swing check valves for proper direction of flow and in horizontal position with hinge pin level.

3.3 ADJUSTING

A. Adjust or replace valve packing after piping systems have been tested and put into service but before final adjusting and balancing. Replace valves if persistent leaking occurs.

3.4 GENERAL REQUIREMENTS FOR VALVE APPLICATIONS

The Section Text is arranged to provide bronze or brass valves in NPS 2 (DN 50) and smaller and iron valves in NPS 2-1/2 to NPS 24 (DN 65 to DN 600).

Retain and revise valve applications in paragraphs and schedules below. Coordinate with valves specified in Part 2.

A. If valve applications are not indicated, use the following:

1. Shutoff Service: Ball valves.

2. Throttling Service, Except Steam: Globe or butterfly valves.

3. Pump-Discharge Check Valves:

a. NPS 2 and Smaller: Bronze swing check valves with bronze disc.

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

C. Select valves, except wafer types, with the following end connections:

1. For Copper Tubing, NPS 2 and Smaller: Threaded ends except where solder-joint valve-end option is indicated in valve schedules below.

Retain first subparagraph below if threaded valve ends are permitted for this application.

Retain only valve types, in subparagraphs below, required for Project.

Retain one or more of first three subparagraphs below and indicate location of each type on Drawings.

Retain one or more subparagraphs below and indicate location of each type on Drawings.

Retain first subparagraph below if threaded valve ends are permitted for this application.

Retain only valve types, in subparagraphs below, required for Project.

Retain one or more of first three subparagraphs below and indicate location of each type on Drawings.

Retain one or more subparagraphs below and indicate location of each type on Drawings.

3.5 HEATING-WATER VALVE SCHEDULE

A. Pipe NPS 2 and Smaller:

Retain first subparagraph below if solder-joint valve ends are permitted for this application.

1. Bronze and Brass Valves: May be provided with solder-joint ends instead of threaded ends.

Retain only valve types, in subparagraphs below, required for Project.

Caution: No one-piece, reduced-port, brass ball valves with stainless-steel trim or bronze ball valves with bronze trim are included in the Section Text. Retain brass or stainless-steel trim with brass ball valves, or bronze or stainless-steel trim with bronze ball valves.

2. Ball Valves: One piece, reduced port, brass or bronze with bronze trim.

3. Bronze Swing Check Valves: Class 150, bronze disc.

4. Bronze Gate Valves: Class 150, NRS.

5. Bronze Globe Valves: Class 150, bronze disc.

Retain first subparagraph below if threaded valve ends are permitted for this application.

END OF SECTION 230523

Project No: 390265

GENERAL-DUTY VALVES FOR HVAC PIPING

230523 - 6