Dayton
Dayton 4KHA3 Relief Valve 22 GPM 250 psi 304 SS trap
Pressure-relief valve protects positive-displacement pumps at 250 psi with a 304 stainless-steel seat and a 22 GPM flow rating
- TypeDrain Components
- Protects positive-displacement pumps with factory-set 250 psi relief
- 22 GPM flow capacity handles high-volume discharge reliably
- 304 stainless-steel seat resists corrosion for long service life
- Test lever included for quick functional verification
- Compact 2 1/8 in length fits tight plumbing layouts
Relief Valve for Positive Displacement Pumps
The Dayton 4KHA3 is a factory-set relief valve rated at 22 GPM and 250 psi. It protects positive displacement pumps from over-pressure damage during operation. The body uses 304 stainless steel for the seat and a nylon construction. A test lever is included for manual verification.
Verify Connection Threads and Pressure Rating
Before ordering confirm that your system uses 3/4 NPT inlet and outlet threads. Ensure the pump’s maximum operating pressure does not exceed the 250 psi factory setting. The valve’s overall height is 5 1/4 inches and length is 2 1/8 inches, so check available mounting space.
Sustained Over-Pressure Protection
Under continuous load the spring-operated mechanism maintains the set pressure without drifting. The steel spring and 304 stainless steel seat resist wear during repeated cycling. The test lever allows periodic confirmation that the valve opens cleanly at the rated pressure.
Highlights
- Protects positive-displacement pumps with factory-set 250 psi relief
- 22 GPM flow capacity handles high-volume discharge reliably
- 304 stainless-steel seat resists corrosion for long service life
- Test lever included for quick functional verification
- Compact 2 1/8 in length fits tight plumbing layouts
Specifications
| Type | Drain Components |
|---|---|
| Brand | Dayton |
| Model | 4KHA3 |
Questions about this item
Does the Dayton 4KHA3 relief valve ship with any fittings or piping, or do I need to buy 3/4 NPT connectors separately?
The valve body has 3/4 NPT inlet and outlet threads; no additional fittings or piping are included in the box.
Should I choose a different model if my system runs above 250 psi or needs more than 22 GPM flow?
This model is factory-set to 250 psi and rated for 22 GPM; select another valve if your pressure or flow requirements exceed those figures.
What does the 22 GPM rating mean when the valve is installed on a positive-displacement pump?
At the 250 psi set pressure the valve can pass up to 22 GPM, preventing over-pressure damage to the pump.
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