Double Disc Wafer Swing Check Valve

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Description:

  1. Suitable Temperature: BUNA-N (NBR) ≤ 80°C; EPDM ≤120°C; VITON ≤ 150°C
  2. Suitable Media: Fresh Water, Sewage, Sea Water, Air, Vapour, Food, Medicine, Oils, Acids, Alkalis, Salts, Ect...

Double Disc Wafer Swing Check Valve - pressure

Double Disc Wafer Swing Check Valve - Dimensions

Double Disc Wafer Swing Check Valve - Figure   Double Disc Wafer Swing Check Valve - Material list

Double Disc Wafer Swing Check Valve - Hydraulic Characteristics

 

Optimum Installation

In a horizonal pipe, the check valve must always be installed with its hinge in the verticle position.

In a piping system, some miimum distances must be respected between the check valve position and a bend or a tee.  The following drawings show some horizontal pipe configurations (view from above) in which the check valve is installed with its hinge pin in the verticle position.

The minimum recommended distance for a check valve installed downstream from a bend, tee, pump or valve causing flow disturbance is 6 diameters.

When such a unit is downstream of the check valve, it is necessary to respect a distance of at least 2 diameters.

Double Disc Wafer Swing Check Valve - optimum installations

Double Disc Wafer Swing Check Valve - pressure drops in water flow

 

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