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Products Water Treatment & Sewage Swing Type Check Valves

Swing Type Check Valves

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Swing Check Valves are designed to prevent backflow in the system in case of a power failure or a change in the flow characteristics. In backflow conditions, the disc, guided by a stem, closes due to its weight and achieves sealing. Drip tight sealing is achieved by metal-metal or metal-resilient sealing mechanisms even in 0.2 bar low back-pressures. In normal flow conditions, disc moves up and causes minimum pressure loss. Accessories connected to the disc such as counter weight, spring etc. increases the closing speed of the valve, or accessories such as dashpot decreases the closing speed of the valve for surge protection. These accessories can be covered by a protection cover optionally. DVD Valves also provides limit switches for SCADA communication and by-pass valve for filling the suction pipe of the pump as accessories to check valves. DVD Check Valves can be manufactured from GG25, GGG40 – 40.3 – 50, GSC25, SS304, SS316 and NAB materials.

Swing Type Check Valves
:Size DN 40…DN 1000
:Operating Pressure PN 10 - 16 - 25 - 40 - 50 – 63
:L Size Standart EN 558-1 SERIE 48 (DIN 3202 F6)
EN 558-1 SERIE 10 (BS 5153)
:Flanges ISO 7005/2
EN 1092/2
BS 4504
BS 10E
ANSI


 
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