Check Valves

Check Valves

Cla-Val Check Valves are available in the sizes and configurations you need for your water distribution system.

Our 81 Series Check Valves use the same main valve as our field proven automatic control valves to deliver unparalleled reliability. In applications where return flow protection is desired, Cla-Val Check valves provide superior and leak-free performance.   A variation on the standard design, the Model 81-12 is specifically configured for use in variable speed pump applications, providing positive shut-off and surge protection when a pressure reversal occurs.

Cla-Val Series 500 Check Valve are available in a variety of body styles:

  • Wafer Swing Check
  • Silent Wafer Check
  • Silent Globe Check
  • Two-Door Wafer Check
  • Flex-Check
  • Swing Check Valve
  • Pivoting Disc Check Valve

PRODUCTS

The Cla-Val Model 81-01 and 681-01 Check Valve are hydraulically operated No-Slam Check Valves. Both valves open 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.

Engineering Data Sheets
Parts Lists and Purchase Specs

The Cla-Val Model 81-02/681-02 Check Valve is a hydraulically operated No-Slam Check Valve with dual speed controls.  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.

This valve is ideally suited for use where a positive shutoff is required. The rubber disc assures tight sealing even if the fluid contains grit or other small-size particles. The simple packless design ensures reliable operation and freedom from leaks.

Engineering Data Sheets

The Cla-Val Model 81-18 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.

Engineering Data Sheets

The Cla-Val Model 81-12/681-12 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
Engineering Data Sheets