Typically installed on the discharge of a pump to prevent backflow when the pump is off line, it opens smoothly at pump start and closes quickly and quietly upon pump shutdown.
The Figures 251-D and 252-D meet the design, materials of construction and testing required by AWWA C508 and are suitable for use with water or sewage.
Product Number: GA Figure 251, 252
3″ x 4″ to 8″ x 12″
Check Valve
Wastewater, Water
- Unique disc design affords 360 degree articulation for tight sealing under all pressure conditions
- Expanded outlet connection can eliminate need for increaser fitting
- Full flow area when swung only 25° away from seat for low head loss and reduced pumping cost
- Bolted cover allows access to all internal components
- Lever & weight and air cushion field convertible right hand to left hand side, and from horizontal to vertical installation
- Body & Disc: Cast Iron, ASTM A126 Class B
- Cover: Steel, ASTM A36
- Body Seat: Stainless Steel, Type 316
- Disc Seat: Buna-N
- Hinge Shaft: Stainless Steel, Type 303 (Optional 316 Stainless Steel)
- Cushion Chamber: Bronze
- External Fasteners: Steel, A307, Zinc Plated (Optional 316 Stainless Steel)
- Standard: Internal and external NSF-61 certified 2-part epoxy
