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81-12

81-12 Check Valve

[81-12]

The Cla-Val Model 81-01/681-01 Check Valve is a hydraulically operated No-Slam Check Valve. This valve opens when the pressure at the inlet exceeds the discharge pressure. A gradual rate of opening prevents sudden opening surges. When a pressure reversal occurs the higher downstream pressure is applied to the cover chamber through the control tube lines, and the valve closes drip tight.

The Cla-Val Model 81-12 does the work of a standard wafer check valve and provides many additional benefits that make it an ideal choice for variable speed drive pump applications where a check valve is needed to prevent return flow.

 
Advantages include:
  • Simple Proven Design
  • No-Slam Operation
  • Drip-Tight Shut-Off
  • No Packing Glands or Stuffing Boxes
  • Easy to Install & Maintain
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