Figures 221-D and 220-U 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 220
3″ to 48″
Check Valve
Wastewater, Water
- Heavy duty construction withstands rigors of pump station operation
- Full flow area when swung only 25° away from seat for low headloss and reduced pumping cost
- Replaceable rubber disc seat for tight seating at low and high pressure
- Lever & weight 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)
- External Fasteners: Steel, A307, Zinc Plated (Optional 316 Stainless Steel)
- Standard: Internal and external coated with 2-part NSF-61 certified epoxy
- Optional: 316 Stainless Steel external fasteners