CHECK VALVE REPAIR KIT

HJ-301353

Check Valve Repair Kit | Check Valve Package | MAXIEM & OMAX Pumps | HJ-301353


The HJ-301353 Check Valve Repair Kit, also known as the Check valve Package is a maintenance kit designed to restore the performance and reliability of OMAX and MAXIEM direct-drive waterjet pumps. This complete check valve repair package contains the essential wear components required during scheduled pump maintenance, helping maintain proper high-pressure sealing, consistent water flow, and reliable cutting performance.

Replacing worn check valve components helps reduce pressure loss, minimize downtime, extend pump service life, and maintain the precision. The HJ-301353 kit ensures correct fit, dependable operation, and long-lasting durability in demanding industrial waterjet applications.

Ideal for preventive maintenance, rebuilds, and routine service intervals, the HJ-301353 Check Valve Package is trusted by maintenance technicians and waterjet professionals who require precision, quality, and performance  without paying OEM prices.

 

Kit Contents

  • 6 × Check Valve Seat (P/N HJ-300640)
  • 6 × 1/4" Black Ceramic Ball (P/N HJ-200904)
  • 12 × Socket Head Cap Screws (P/N HJ-300734)
  • 12 × Flat Washers (P/N HJ-201277)

 

Features

  • High precision and performance HJ Waterjet replacement parts
  • Designed for scheduled pump maintenance
  • Restores proper check valve sealing
  • Helps maintain consistent cutting pressure
  • Reduces pump wear and unexpected downtime
  • Precision-manufactured for long service life
  • Direct replacement for OMAX Part Number 301353

 

Applications

Compatible with many OMAX and MAXIEM direct-drive waterjet pumps utilizing the OMAX internal inlet check valve assembly. Always verify compatibility using your machine serial number or parts manual before ordering.

 

Benefits

  • Maintains peak waterjet cutting performance
  • Improves pump reliability
  • Supports consistent operating pressure
  • Reduces maintenance costs through preventive service
  • HJ Waterjet quality for dependable performance

 

Frequently Asked Questions | HJ-301353


1. What is HJ Waterjet part number HJ-301353?

HJ-301353 is a direct replacement for OMAX 301353 Check Valve Repair Kit/Package used for servicing the check valve in compatible OMAX waterjet pumps. 

2. What pump is part HJ-301353 used on?

The HJ-301353 kit is associated with OMAX pump check-valve service, including legacy/MAXIEM pump configurations. It is also included as one component of OMAX major pump maintenance kit HJ-302701. 

3. What are the symptoms that indicate the check valve needs repair?

Typical indications can include:

  • Difficulty maintaining high pressure
  • Pressure fluctuations
  • Reduced cutting performance
  • Water leakage around the check-valve area
  • Excessive wear of the ceramic balls or valve seats
  • Repeated pump pressure problems

The exact symptom can depend on which component of the check valve has worn or failed.

4. Can I replace individual components instead of buying HJ-301353?

Yes. The individual components in the kit have their own part numbers. For example, HJ-300640 is the check-valve seat and HJ-200904 is the 1/4-inch ceramic ball. 

However, if multiple check-valve components are worn, the complete HJ-301353 kit can be more convenient because it provides the required replacement quantities.

5. Is HJ-301353 the same as a check-valve assembly?

No. HJ-301353 is a repair kit, whereas complete check-valve assemblies list as HJ-303401. The repair kit contains wear/replacement components rather than the complete valve assembly.

6. What is the difference between HJ-301353 and HJ-302701?

HJ-301353 is specifically the check-valve repair package.

HJ-302701 is a major OMAX/MAXIEM pump maintenance kit that includes one HJ-301353 along with several other maintenance components. 

7. What machines can use the HJ-301353 kit?

Compatibility depends on the specific pump generation and configuration. Before ordering, it is best to identify the pump model and serial number, rather than relying only on the machine/table model.

8. What should I inspect when rebuilding the check valve?

At minimum, inspect the:

  • Ceramic balls
  • Valve seats
  • Screws
  • Washers
  • Mating/sealing surfaces
  • Check-valve body and associated components

 

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

 

** HJ WATERJET IS IN NO WAY AFFILIATED WITH GMA, EBBCO, KENNAMETAL, KMT, FLOW, BFT, H2O, OMAX, ACCUSTREAM, HYPERTHERM OR TECHNI. PART NUMBERS ARE FOR CONVENIENCE ONLY.

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