Kit, HP Check Valve(Seal Head) Repair, Outlet, 1.125" Plunger(75/100S), 60K | HJ-80084403
The HJ WATERJET HJ-80084403 HP Check Valve Repair Kit is specifically engineered for 1.125-inch plunger 60,000 PSI (4,100 bar) intensifier pumps, this HJ-80084403 outlet check valve repair kit restores proper sealing, improves pressure consistency, and helps reduce downtime caused by worn high-pressure components.
This HJ-80084403 HP Check Valve Repair Kit ensures reliable sealing performance, extended service life, and dependable operation in demanding industrial waterjet cutting applications. Replacing worn outlet check valve components during scheduled maintenance helps prevent pressure fluctuations, premature component wear, and unexpected equipment failures.
Ideal for preventative maintenance or scheduled pump rebuilds, this repair kit provides the exact components required to restore the outlet high-pressure check valve assembly to factory specifications.
Features & Benefits
- Designed for 60,000 PSI (4,100 bar) waterjet systems
- Compatible with 1.125-inch plunger intensifier pumps
- Restores outlet check valve sealing performance
- Improves pressure consistency
- Reduces internal leakage
- Helps extend intensifier component life
- Minimizes costly machine downtime
- Manufactured to original factory specifications
- Ideal for preventative maintenance programs
Applications
The HJ-80084403 repair kit is commonly used in industrial waterjet cutting systems operating with:
- High-pressure intensifier pumps
- 60K PSI (4,100 bar) systems
- 1.125" plunger assemblies
- Manufacturing facilities
- Metal fabrication
- Stone and granite cutting
- Aerospace machining
- Automotive manufacturing
- Glass processing
- Composite material cutting
Recommended Maintenance
For optimum waterjet performance, inspect outlet check valve components during scheduled pump maintenance. Replacing worn valve seats, poppets, springs, and pins before failure helps maintain consistent operating pressure while reducing the risk of costly repairs and unexpected production downtime.
Frequently Asked Questions | HJ-80084403
- What is HJ Waterjet part number HJ-80084403?
HJ-80084403 is a direct replacement for KMT 80084403 HP Check-Valve Discharge/Outlet Repair Kit for KMT waterjet sealing-head assemblies.
- What does HJ-80084403 repair?
It repairs the discharge/outlet side of the high-pressure check valve in the applicable sealing head.
- What machines use HJ-80084403?
It is specified for SL-V sealing-head assemblies with 75–200 HP ratings.
- What plunger size does HJ-80084403 fit?
It is designed for 1.13-inch / 1.125-inch plunger units.
- What pressure is HJ-80084403 rated for?
60,000 psi (4,100 bar).
- Is HJ-80084403 an inlet or outlet repair kit?
It is an outlet/discharge-only repair kit. It does not include the inlet components found in HJ-72125203.
- Does 80084403 include the discharge poppet?
Yes. It includes 05116603 discharge poppet. K KMT Genuine Parts
- Is HJ-80084403 a complete check-valve assembly?
No. It is a repair kit containing the applicable discharge-side wear components.
- What is the difference between HJ-80084403 and HJ-72125203?
HJ-80084403 is the outlet/discharge-only kit. HJ-72125203 is an inlet-and-discharge kit and includes inlet components as well. Both are associated with 1.13/1.125-inch, 60,000-psi applications.
10. Can HJ-80084403 be used on a 75 HP KMT pump?
Yes, it is specified for 75–200 HP SL-V sealing-head assemblies.
11. Can HJ-80084403 be used on a 100 HP KMT pump?
Yes. HJ-80084403 is identified with the SL-V 75S and 100S family.
12. Is HJ-80084403 compatible with SL-V?
Yes. It is specifically identified for SL-V sealing-head assemblies.
13. Is HJ-80084403 compatible with SL-VI?
Don''''''''''''''''t automatically assume so. It is specifically stated for SL-V, whereas HJ-72125203 is listed for SL-V and SL- VI configurations. Check the exact sealing-head configuration before substituting one kit for another.
14. What are the symptoms of a worn discharge check valve?
Possible symptoms can include pressure instability, reduced cutting performance, leakage, or poor pump performance. Proper troubleshooting should confirm that the check valve is actually the source of the problem before replacing the kit.
15. When should HJ-80084403 be replaced?
There is no single replacement interval that applies to every machine. Replacement depends on operating hours, pressure, water quality, maintenance practices, and inspection of the valve components.
16. Can I buy the individual components instead of the complete HJ-80084403 kit?
Some of the components are available individually, including the seat, discharge poppet, poppet pin, and spring. However, the HJ-80084403 kit conveniently supplies the four specified discharge-side components together.
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