Wafer Double Door Check Valve Installation

Keckley cast iron wafer body double disc check valves have pin retainer holes in the body where plugs are inserted to hold the hinge pin and stop pin in place.

Wafer double door check valve installation.

Uwp model 2550 ductile iron double door check valve is ul listed for use in the fire protection industry. The lightweight compact design fits between mating flanges and meets api 594 face to face dimensions. Flanged ends conform to ansi b125 1 class 125. This non slam spring assisted center guided lugged pattern wafer check valve is designed to prevent water hammer and reverse flow.

The tlw check valve tapped lug wafer was engineered for applications where exposed studs are not suitable. Keckley offers a retainerless wafer body design in bronze carbon steel stainless steel and other specially cast alloys. Double door check valves are recommended for clean liquids and gasses and have an excellent performance reputation in refineries petrochemical gas liquefaction other process industries and hvac applications because of their cost efficient design and non slam properties. Herz wafer type double door check valve dn mm inch 65 2 1 2 80 3 100 4 125 5 150 6 200 8 250 10 300 12.

Forum s cost efficient line of abz double door wafer check valves offers a sleek low profile design that perfectly suits tight spaces. The double door check valve is held closed by the legs of a torsion spring. Prior to installation a. Aims to be the brand of choice for meeting the market s needs for competitively priced high quality check valves with prompt on time delivery and exceptional customer service.

Flow from the pump causes the double door check valve to open. Conversely when the pump is stopped flow decay occurs and at a point near zero velocity the force from the legs of the torsion spring instantly closes the double door check valve for non slam shut off. Designed to protect pumping equipment boost energy savings reduce maintenance and increase uptime these thin valves are heavy duty and corrosion resistant. The wafer check valve may be installed in horizontal pipework and vertical pipework if the flow is in an upwards direction.

It is designed for steady flow conditions with a velocity up to 3 metres second.