SECTION 15410 PLUMBING VALVES

This spec was part of the Des Plaines, IL River WRF project that bid Feb 26, 2015.


SECTION 15410 PLUMBING VALVES
PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following general-duty valves:

1. Copper-alloy ball valves.

2. Bronze gate valves.

3. CPVC ball valves.

4. Check valves.

1.2 DEFINITIONS

A. The following are standard abbreviations for valves:

1. CWP:  Cold working pressure.

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

3. NBR:  Acrylonitrile-butadiene rubber.

4. PTFE:  Polytetrafluoroethylene plastic.

5. TFE: Tetrafluoroethylene plastic.

1.3 SUBMITTALS

A. Product Data: For each type of valve indicated. Include body, seating, and trim mate- rials; valve design; pressure and temperature classifications; end connections; arrange- ment; dimensions; and required clearances. Include list indicating valve and its appli- cation. Include rated capacities; shipping, installed, and operating weights; furnished specialties; and accessories.

1.4 QUALITY ASSURANCE

A. NSF Compliance: NSF 61 for valve materials for potable-water service.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Prepare valves for shipping and storage 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 valves open to minimize exposure of functional surfaces.

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

B. 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.


PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where subparagraph titles below introduce lists, the following requirements apply for product selection:

1. Manufacturers:   Subject to compliance with requirements, provide products by the manufacturers specified.

2.2 VALVES, GENERAL

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

B. Bronze Valves:  NPS 2 (DN 50) and smaller with threaded ends, unless otherwise indi- cated.

C. Bronze Valves:  NPS 2-1/2 to 4 (DN 65 to 100) with grooved 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.

F. Valve Actuators:

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

2. Lever Handle:  For quarter-turn valves NPS 6 (DN 150) and smaller.

G. Extended Valve Stems:  On insulated valves.

2.3 COPPER-ALLOY BALL VALVES

A. Manufacturers:

1. Copper-Alloy Ball Valves:

a. Grinnell Corporation.
b. Milwaukee Valve Company
c. NIBCO INC.
d. Watts Industries, Inc.; Water Products Div.

B. Copper-Alloy Ball Valves, General: MSS SP-110.

C. Two--Piece, Copper-Alloy Ball Valves: Bronze body with full -port, chrome-plated bronze ball; PTFE or TFE seats; and 600-psig (4137-kPa) minimum CWP rating and blowout-proof stem.

2.4 BRONZE GATE VALVES

A. Manufacturers:

1. Type 2, Bronze, Rising-Stem, Solid-Wedge Gate Valves:
a. Milwaukee Valve Company.- Gate 1156
b. NIBCO INC.
c. Red-White Valve Corp.

B. Bronze Gate Valves, General: MSS SP-80, with ferrous-alloy handwheel.

C. Type 2, Class 200, Bronze Gate Valves: Bronze body with rising stem and bronze sol- id wedge and union-ring bonnet.

2.5 CPVC BALL VALVES

A. CPVC Union Ball Valves: MSS SP-122, with full-port ball, socket detachable end connectors, PTFE seat, EPDM or Viton O-rings, and pressure rating not less than 150 psig (1035 kPa) at 73 deg F, NSF listed for potable water use.

2.6 BRONZE CHECK VALVES

A. Manufacturers:

1. Type 3, Bronze, Swing Check Valves with Metal Disc:

a. Grinnell Corporation.
b. Milwaukee Valve Company.
c. NIBCO INC.
d. Red-White Valve Corp.
e. Watts Industries, Inc.; Water Products Div.

B. Bronze Check Valves, General: MSS SP-80.

C. Type 3, Class 150, Bronze, Swing Check Valves: Bronze body with bronze disc and seat.

2.7 GRAY-IRON SWING CHECK VALVES

A. Manufacturers:

1. Type I, Gray-Iron Swing Check Valves with Metal Seats:

a. Grinnell Corporation.
b. Milwaukee Valve Company.
c. NIBCO INC.
d. Red-White Valve Corp.
e. Watts Industries, Inc.; Water Products Div.

B. Gray-Iron Swing Check Valves, General: MSS SP-71.

C. Type I, Class 150 gray-iron, swing check valves with metal seats.

2.8 PVC CHECK VALVE

A. PVC construction, soft closing, 200 psig rated.


PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine piping system for compliance with requirements for installation tolerances and other conditions affecting performance.

1. Proceed with installation only after unsatisfactory conditions have been correct- ed.

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

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

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

E. 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 mate- rial composition is suitable for service, and that it is free from defects and damage.

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

3.2 VALVE APPLICATIONS

A. Refer to piping Sections for specific valve applications.  If valve applications are not indicated, use the following:

1. Shutoff Service:  Ball or gate valves.

2. Throttling Service:  Ball valves.

B. 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.

C. Domestic Water Piping:  Use the following types of valves:

1. Ball Valves, NPS 2 (DN 50) and Smaller:  Two-piece, 600-psig (4137-kPa) CWP rating, copper alloy.
a. For Stainless Steel piping systems utilize equivalent class stainless steel ball valves.

2. Gate Valves, NPS 3 (DN 50) and Larger: Type 2, Class 250, bronze.

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

1. For Copper Tubing, NPS 2 (DN 50) and Smaller:  Solder-joint or threaded ends.

3.3 VALVE INSTALLATION

A. Piping installation requirements are specified in other Division 15 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 ser- vice, 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.

3.4 JOINT CONSTRUCTION

A. Refer to Division 15 Section "Basic Mechanical Materials and Methods" for basic pip- ing joint construction.

B. 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.

3.5 ADJUSTING

A. Adjust or replace valve packing after piping systems have been tested and put into ser- vice but before final adjusting and balancing. Replace valves if persistent leaking oc- curs.


END OF SECTION