UHP Outlet Check Valve Repair Kit, .875 Plunger, 90K | HJ-72135447
The HJ-72135447 UHP Outlet Check Valve Repair Kit is designed specifically for 90,000 PSI (6,200 bar) systems using .875-inch plunger assemblies, this HJ-72135447 repair kit provides all of the critical components required to rebuild the outlet check valve and maintain consistent water pressure, sealing performance, and cutting accuracy.
Manufactured to original engineering specifications, this HJ-72135447 repair kit helps reduce unplanned downtime, extend sealing head life, and ensure dependable operation in demanding industrial waterjet cutting applications. It is the recommended replacement kit for servicing outlet check valves on compatible KMT PRO-II sealing head assemblies utilizing .875-inch plungers.
Frequently Asked Questions | HJ-72135447
1. What is HJ Waterjet part HJ-72135447?
It is a HJ Waterjet direct replacement for KMT 72135447 UHP Check Valve Repair Kit for the outlet/discharge side of the sealing head.
2. What does the 72135447 kit include?
(1) HJ-05116561 Discharge Poppet
(1) HJ-05116751 Poppet Pin
(1) HJ-05147863 Compression Spring
(1) HJ-72101570 Discharge Seat
3. What pressure rating is HJ-72135447 designed for?
It is a 90,000 psi (6,200 bar) UHP repair kit. Identified with the 90,000-psi check-valve assemblies.
4. What plunger size does it fit?
The kit is specified for .875-inch (0.88) plunger units.
5. What KMT pumps does it fit?
HJ-72135447 is identified as a repair kit for PRO-II sealing-head assemblies. Current parts listings also identify compatibility with certain PRO-II and PRO-III configurations, so the exact sealing-head design should be verified before ordering.
6. Does HJ-72135447 repair both the inlet and outlet?
No. HJ-72135447 is the discharge/outlet-side kit. HJ-72117819 is listed as the inlet/discharge ball-style kit for compatible PRO-II/PRO-III assemblies.
7. Is HJ-72135447 the same as HJ-72117819?
No. The primary difference is the scope of the repair:
HJ-72135447 Outlet/Discharge repair
HJ-72117819: Inlet-and-Discharge repair for ball-style inlet configurations
8. What are the signs that the HJ-72135447 components need replacement?
Typical symptoms associated with a worn outlet check valve can include poor sealing, inconsistent pressure, reduced cutting performance, or premature wear in the sealing head. The repair kit replaces the primary discharge-side wear components.
9. Can I replace individual components instead of the entire kit?
The components are individually identified, but HJ-72135447 is supplied as a four-component repair kit. If you are rebuilding the outlet check valve, replacing the complete kit ensures the associated poppet, pin, spring, and seat are serviced together.
10. Is HJ-72135447 interchangeable with newer repair kits?
Not necessarily. Documentation and industry sources identify newer repair-kit numbers for newer sealing-head designs. For example, HJ-7219013213 and HJ-7219013217 are identified for newer configurations. Verify the sealing-head design and existing part numbers before substituting.
11. What should I verify before ordering HJ-72135447?
The most important checks are:
- KMT pump/model
- Sealing-head configuration
- .875-inch plunger
- 90,000 psi / 6,200 bar operating rating
- Whether you need outlet-only or inlet/outlet repair
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