WS1.25 & 1.5 Service Kit (Stack and Pistons) (V3430-01 Set)
WS1.25 & 1.5 Service Kit (Stack and Pistons) (V3430-01 Set)
SKU:10440000346 C00001
Share
Full service kit for Clack WS1 control valves in the 1¼" and 1½" size, covering the three parts that wear out first under regular use: the stack assembly, piston, and entry seal. If your softener has started regenerating inconsistently, running longer cycles than usual, or leaking slightly from the valve body, this kit resolves the most common causes.
What's in the box
- Stack assembly
- Piston
- Entry seal
Specifications
| Component | Details |
|---|---|
| Model | V3430-01 |
| Compatibility | Clack WS CI 1¼ inch and 1½ inch valves |
| Components Included | Stack, Piston, Entry Seal |
Compatibility
Fits Clack WS1 and WS1.25 valves (model V3430-01). Confirm your valve size (1¼" or 1½") from the body stamp before ordering, as the smaller and larger valves use different kits.
Service tip
Most installers recommend replacing this kit every 5–7 years as preventative maintenance, even before symptoms appear, since a full valve rebuild is far cheaper than a replacement.
Product Resources
Product Resources

WS1.25 & 1.5 Service Kit (Stack and Pistons) (V3430-01 Set)
WS1.25 & 1.5 Service Kit (Stack and Pistons) (V3430-01 Set)
Full service kit for Clack WS1 control valves in the 1¼" and 1½" size, covering the three parts that wear out first under regular use: the stack assembly, piston, and entry seal. If your softener has started regenerating inconsistently, running longer cycles than usual, or leaking slightly from the valve body, this kit resolves the most common causes.
What's in the box
- Stack assembly
- Piston
- Entry seal
Specifications
| Component | Details |
|---|---|
| Model | V3430-01 |
| Compatibility | Clack WS CI 1¼ inch and 1½ inch valves |
| Components Included | Stack, Piston, Entry Seal |
Compatibility
Fits Clack WS1 and WS1.25 valves (model V3430-01). Confirm your valve size (1¼" or 1½") from the body stamp before ordering, as the smaller and larger valves use different kits.
Service tip
Most installers recommend replacing this kit every 5–7 years as preventative maintenance, even before symptoms appear, since a full valve rebuild is far cheaper than a replacement.