2"-12" Resilient Wedge NRS Gate Valves with Mechanical Joint Ends


Valves 2"-12" in size shall be of a resilient wedge design. The valve shall have a cold water rated working pressure of 250 psig.  All cast ferrous components shall be ductile iron and shall be manufactured in compliance with the latest edition of ANSI/AWWA C515.  The valve shall also be UL Listed and FM Approved, in applicable configurations. All valves shall be certified to NSF/ANSI/CAN 61 and NSF/ANSI/CAN 372.

The valve design shall be lightweight, easy to handle, and constructed with wall thickness per Table 3 of ANSI/AWWA C515. Heavy wall and/or cast gray iron bodies are not acceptable. The valve shall have a smooth and oversize waterway and have the marking "D.I." or "Ductile Iron" cast onto the body. The valve wedge shall be constructed of ductile iron in sizes 4"-12". All 4"-12" wedges shall be fully encapsulated with EPDM rubber and provided with male type guides and polymer guide covers.

Valve stems shall be sealed by three O-rings. Two of the O-rings shall reside above the thrust collar. Thrust collar shall be integral to the valve stem. Multi-piece collars that wrap around stem are not acceptable. O-rings set in a cartridge shall not be allowed.

Valves 2-1/2"-12" shall be furnished with a debris seal above the stuffing box O-rings. This seal shall also be capable of sealing against internal or external pressure equal to the valve's rated working pressure.

The valve shall also be equipped with thrust washers above and below the stem thrust collar for reduced operating torque.

All exterior valve body bolting shall be stainless steel and shall be provided with hexagonal heads with dimensions conforming to ANSI B18.2.1.  Metric size and/or socket head cap screws, or bolts, are not allowed. The operating nut shall be 2" square and shall be constructed of ductile iron fitted to a square tapered stem to help ensure even distribution of input torque.  All body gaskets shall be of the pressure energized O-ring style design. 

All internal and external ferrous surfaces of the valve body and bonnet shall have fusion-bonded epoxy coating, complying with ANSI/AWWA C550.

All valves shall be the AMERICAN Flow Control Series 2500 or 2500-1 Resilient Wedge Gate Valves.

In 4"-12" distribution lines, where pressure ratings may exceed 250 psig, a resilient wedge gate valve exhibiting a 350 psig rating by AWWA, UL and FM shall be furnished. All 350 psig rated valves shall be the AMERICAN Flow Control Series 3500.