- The gate valves shall be manfactured in accordance with AWWA standard C-509, C515 & ULC listed.
- The gate valves shall be either non-rising stem or rising stem, opening by turning stem left or right and provided with 2" square operating nut or handwheel with the word "Open" and an arrow cast in the metal to indicate direction of opening.
- The wedge shall be of cast iron completely encapsulated with rubber. The sealing rubber shall be permanently bonded to the cast iron wedge to meet ASTM tests for rubber metal bond ASTM D-249.
- Stems for NRS assemblies shall be cast bronze with integral collars in full compliance with AWWA requirements. OS & Y stems shall be bronze. The NRS stem stuffing box shall be the "O" ring seal type with two "O" rings located above thrust collar. The two "O" rings shall be replaceable with the gate valve fully open and subjected to fully rated working pressure.
- There shall be two low torque thrust bearings located above and below the stem collar. The stem nut shall be independent of wedge and shall be made of solid bronze. There shall be a smooth, unobstructed waterway free of all pockets, cavities and depressions in the seat area.
- The entire gate valve including the gland cover, body and bonnet, shall be epoxy coated both on the interior & exterior. Each valve shall have maker's name, pressure rating and year in which manufactured, cast on the body.
- Prior to shipment from factory, each valve shall be tested by hydrostatic pressure equal to requirement for both AWWA (twice the specified working pressure of 250 psi.) & ULC requirements. Bolting shall either be, regular plated or stainless steel type 304 or type 316 as required.
- The gate valves shall be backed by manufacturer's 5 year limited warranty.
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