WS1 Clack Valve


Clack valve for filter or softener 1″.

Connections: 1″ NPT
Material: Noryl
Thread at the base: 2.5″
Cycles: 6
Min. Flow / Max. operation: 20 psi – 125 psi
Temperature Min. / Max: 4.44 °C to 43.3 °C

Product images are demonstrative and may vary from the physical product.


Clack WS1 valve.

Clack WS1 valves for filter or softener.

Flow rates at which filter or softener clack valves operate:

Continuous at 15 psi pressure drop (bypass and gauge sold separately, gauge only applies to flow-through softeners): 27 gpm (102 lpm)

Backwash 25 psi pressure drop (bypass sold separately): 27 gpm (102 lpm)

Service hp (flow at 1 psi pressure drop): 7.0

Backwash CV (flow at 1 psi pressure drop): 5.4

Advantages of Clack valves:

  • Easy configuration of the microprocessor from the front panel.
  • Suitable for 6″ to 22″ diameter softener tanks and 6″ to 24″ diameter filter tanks.
  • Three modes of operation; immediate meter, delayed meter, or delayed time clock.
  • Dual washing function that offers optimal regeneration, cleaning capacity and efficiency.
  • 36 selectable pre-programmed regeneration cycles
  • Days function; 1 to 28 days available
  • Washing and service for 22″ diameter tanks.
  • Downward / upward regeneration flow
  • Stores system configuration and operation data in memory.
  • Lithium back-up battery with 8 hours of back-up time.
  • AC adapter with 12-volt output provides easy and safe installation.
  • Control valve design provides optimum service and backwash flow.
  • Use treated water to refill the tank.


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