An essential element in the design of water and wastewater pumping systems is the proper selection of the pump discharge check valve, whose purpose is to automatically open to allow forward flow and automatically return to the closed position to prevent reverse flow when the pump is not in operation. Another function that is often overlooked is th ...
High Quality Valves Built to Last Globe Wafer Style Check Valves. STAINLESS STEEL CHECK VALVE Model 812XT ... Booster Pump Systems ... WAFER CHECK VALVE Model 888 888R / 888ST / 888S6 Metal to Metal seating standard. Optional rubber seal available for drip tight seal, add R to
Wafer style axial flow check valves vs. dual disc check valves In 2000 a South Eastern US County Water Department, located in one of the ... of pipe diameters between the pump discharge and the check valve. To understand the improved performance of an axial flow check valve in minimizing water hammer, you must consider the ...
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15/06/2016· For check valves at Pump Discharge it should be: Pump, then Check Valve, then Isolation valve Check valves tend to fail more often the isolation valve. So if you have to remove the NRV at a tank you will risk draining all of the fluid
The DFT® Model WLC® Wafer Style Check Valve is a lightweight, spring assisted, center guided, non slam check valve that provides reliable, low maintenance service for a wide range of fluids and pressure/ temperature combinations.
The wafer check valve is ideal for pump discharge duties. The eccentric mounted hinge pin in combination with the disc seat guarantees a positive shut off of the returning media. Wafer Check Valves also available with Spring Loaded version on specific request.
CHECK VALVES FOR PUMP DISCHARGE. Two of the most common problems with check valves are reverse flow and water hammer. In both situations, a fast closing valve is required. Reverse flow can be expensive, especially if it occurs at the discharge of a pump and the pump spins backwards.
Wafer Style Check Valves. Wafer Valve with 316 stainless steel, wafer connection to ANSI 150/300 with metal to metal seating. Available from .5 in to 24inch with cast iron body, epoxy coating and split disc ® design. 888/888R 2 10 inch Submit RFQ. 895 SPLIT DISC ® 2 24 inch Submit RFQ. 888VFD 2 10 inch (50 mm ...
WZLD check valve will give enhanced protection for the safety of personnel, the environment, mechanical equipment, process plant, and against loss of product or production. It's not an isolating valve and should not be used as such. WZLD dual plate check valves are widely appliced in the industry of petroleum, petro chemical, chemical, LNG etc.