Productgroup: Check Valves
Medium: Water, Wastewater
VAG GA Industries Figures 220-DS and 220-US are heavy duty, customizable swing check valves that utilize an adjustable counterweight assisted closure to minimize slam and hammer. The valve is typically installed in 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.
Figures 221-DS and 220-US meet the design, materials of construction and testing required by AWWA C508 and are suitable for use with water or sewage.
• 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
• External Fasteners: Steel, A307, Zinc Plated
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