Wafer Double Door Check Valve Installation

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.

Wafer double door check valve installation.

Prior to installation a. 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. The double door check valve is held closed by the legs of a torsion spring. 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.

Keckley offers a retainerless wafer body design in bronze carbon steel stainless steel and other specially cast alloys. Uwp model 2550 ductile iron double door check valve is ul listed for use in the fire protection industry. Sure flow equipment inc. The lightweight compact design fits between mating flanges and meets api 594 face to face dimensions.

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. Ul awwa wafer double door check valve united water products. This non slam spring assisted center guided lugged pattern wafer check valve is designed to prevent water hammer and reverse flow. The wafer check valve may be installed in horizontal pipework and vertical pipework if the flow is in an upwards direction.

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. Retainerless wafer double door check valve. The tlw check valve tapped lug wafer was engineered for applications where exposed studs are not suitable. Forum s cost efficient line of abz double door wafer check valves offers a sleek low profile design that perfectly suits tight spaces.

Designed to protect pumping equipment boost energy savings reduce maintenance and increase uptime these thin valves are heavy duty and corrosion resistant.