HP Check Valve Repair Kit – Outlet, .875 Plunger, 60K PSI |HJ-05133335
The HJ WATERJET HP Check Valve Repair Kit – Outlet, .875 Plunger, 60K (HJ-05133335) is a precision-engineered rebuild kit designed for high-pressure waterjet intensifier systems operating up to 60,000 PSI (4,100 bar).
The HJ-05133335 HP Check Valve Repair Kit restores the outlet (discharge) check valve, a critical component responsible for maintaining one-way high-pressure water flow from the intensifier to the cutting system.
Key Benefits
- Restores Pressure Stability – Eliminates pressure fluctuations
- Prevents Backflow – Protects intensifier components
- Improves Cutting Performance – Ensures consistent jet output
- Extends Pump Life – Reduces internal wear
- Cost-Effective Repair – Avoids full valve replacement
Applications
- Metal cutting operations
- Automotive component cutting
- Aerospace fabrication
- Industrial waterjet systems
Frequently Asked Questions | HJ-05133335
1. What is HJ Waterjet part number HJ-05133335?
HJ-05133335 is a direct replacement for KMT 05133335 HP Check Valve Repair Kit for the outlet/discharge side of a KMT-style waterjet intensifier. It is designed for a 0.875-inch (0.88-inch) plunger and 55,000–60,000 PSI / 3,800–4,100 bar systems.
2. Is HJ-05133335 an inlet or outlet check valve kit?
It is an outlet/discharge check valve repair kit. It is not the complete inlet/outlet check-valve kit.
3. What KMT pumps use part HJ-05133335?
Documentation lists the kit for SL-V, Classic, and OEM units in the 15–60 HP range. Some aftermarket listings also identify compatibility with SL-IV and SL-VI configurations, so the exact pump/sealing-head configuration should be verified before ordering.
4. Is HJ-05133335 the same as an entire check valve assembly?
No. HJ-05133335 is a repair kit containing the replaceable discharge-check-valve components. It should not be confused with a complete sealing-head assembly or an inlet/outlet check-valve kit.
5. What is the difference between HJ-05133335 and HJ-20489495?
The key difference is configuration. HJ-05133335 is the discharge/outlet repair kit, while HJ-20489495 is an inlet/outlet check-valve repair kit for 0.88-inch plunger units using a button-
6. What are the symptoms of a worn HJ-05133335 check valve?
Typical reasons for replacing the discharge-check-valve components include loss of intensifier performance, pressure instability, reduced cutting performance, or leakage through the high-pressure check-valve area. The exact symptom can vary depending on which component—seat, poppet, pin, or spring—is worn.
7. Can I replace individual components instead of buying HJ-05133335?
The individual components are available under their own HJ Waterjet part numbers, but HJ-05133335 packages the four discharge-check-valve components together. For a rebuild, replacing the complete kit is generally the straightforward approach.
8. What should I verify before ordering HJ-05133335?
Verify:
- Pump model
- 0.875-inch plunger
- 55K/60K operating pressure
- Whether you need the outlet/discharge valve rather than inlet/outlet
- Existing part number and sealing-head configuration
Why Choose HJ Waterjet?
HJ Waterjet replacement parts are engineered to deliver premium-quality, reliable performance, precision fit, and long-lasting durability at a competitive price. Precision manufactured to exact specifications using high-quality materials and tight tolerances, our components are designed for compatibility with OEM waterjet systems and demanding industrial applications. By focusing on quality, precision, and value—not expensive branding—we help manufacturers reduce maintenance costs, minimize downtime, and maximize productivity without compromising performance or reliability. When precision matters, HJ Waterjet delivers the quality, reliability, and value professionals trust. Premium Performance Without the Premium Price