Clack WS2H Control Valve

Product Description

The commercial/industrial line of control valves was also developed with direct input from customers and incorporate many of the features proven in the residential line of valves. The WS2H valve provides flow rates up to 125 GPM.

In 2001, after years of development and extensive field testing, Clack introduced its first line of residential control valves. The goal was to design a family of control valves for the water treatment professional that covered the greatest range of applications, while having the greatest commonality of parts. All Clack valves incorporate patented “stack technology” and feature state-of-the-art electronics and programming software.

WS2H Product Specifications
Service @ 1 bar/15 psi drop
Backwash @ 1.7 bar/25 psi drop
473 lpm, 28.4 m³/h
473 lpm, 28.4 m³/h
Tank Applications:
Filter (1)
18” – 63” diameter
18” – 48” diameter
Fitting Connections
2” Female BSPT or NPT/
2.5” Groove Lock
Valve Material
Lead Free Brass
Up to 9
Operating Pressure
Operating Temperatures
1.4 – 8.6 Bar
4° - 43° C
Flow Rate Range
Volume Range (m3)
5.7 – 473 lpm
38 – 3796.2 liters x 1000
Distributor Pilot
63mm O.D. Pipe or
2.375” O.D. Pipe
Drain Line Connection
2” Female NPT or BSPT
2.5” Groove Lock
Brine Line Connection
1” Male NPT Elbow
¾” x 1”Solvent elbow
Mounting Base Options
Quick Disconnect
4” – 8 UN
6” Flange
Side Mount
Height From Top of Tank
With 4” – 8 UN QC Base is 292mm
With 6” Flange QC Base is 294.6mm
Shipping Weight
22.7 Kg
Supply Voltage
Supply Frequency
Output Voltage
Output Current
230V AC
24V AC
750 mA
Product Features:
• 2" top mount or side mount control valve suited for commercial and industrial applications • Pre of Post reated wter regenerant refill
• Epoxy coated lead free brass valve body • Days override feature; 1 - 28 days available
• Build-In Internal Flow Meter standard with all valves • 20-volt output AC adapter provides safe and easy installation
• Service flow rate 473 lpm, backwash 473 lpm • Reliable and proven DC drive
• Solid sate microprocessor with easy access front removable POD • Patented one piece expanding seal spacer stack assembly
• Front panel display for Time of Day, Current Flow Rate, Totalizer, and Volume/Days until regeneration • Patented linearly reciprocating piston operation
• Four methods to initiate the down flow regeneration; meter delayed, meter immediate, time clock delayed, or pressure differential • Fully programmable regeneration cycle times
• Fully programmable regeneration cycle sequences (maximum 9)  
  • The Clack WS2H Control Valve was ideally designed for industrial applications.
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(1 review) Write a Review
  • 5
    I highly recommend this product.

    Posted by Alfredo S. on Mar 13th 2019

    Terrificly made parts

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