Repair kit, On/off I, 001959-1

ON/OFF VALVE REPAIR KIT

HJ-001959-1

FLOW PART NUMBER: 001959-1

H20 PART NUMBER: 302001-1
ADDITIONAL REFERENCES: TL-004001-1, 20458839, 1-11146

 

This kit includes the following parts:

HJ-001328-1 On/Off Valve Seal, Legacy

HJ-001337-1 On/Off Valve Backup Ring, Insta 1

HJ-A-0275-014 O-Ring,On/Off Valve 

HJ-A-0275-006 On/Off Valve O-Ring

HJ-006933-1 On/Off Valve Poppet Landing, Insta I / Insta II

HJ-006934-1 On/Off Valve Poppet, SST, Insta

Product Description


The HJ WATERJET On/Off Valve Maintenance Kit, 60K (HJ-001959-1 or HJ-302001-1) is a precision-engineered On/Off Valve Maintenance Kit for high-pressure on/off valve assemblies used in waterjet cutting systems operating up to 60,000 PSI (4,100 bar).

The HJ-001959-1 or HJ-302001-1 On/Off Valve Maintenance Kit  is designed to restore the internal sealing system and actuation performance of the on/off valve—the component responsible for controlling the start and stop of the cutting stream at the cutting head.

Over time, internal valve components experience wear due to extreme pressure cycling, water erosion, and contamination, leading to issues such as leakage, slow response, or incomplete shutoff. The HJ-001959-1 or HJ-302001-1 On/Off Valve Maintenance Kit replaces those critical wear elements, restoring the valve to optimal performance and reliability.

 

The HJ-001959-1 or HJ-302001-1 include the following parts: 

HJ-001328-1 or HJ-100061-1 On/Off Valve Poppet Seal

HJ-001337-1 or HJ-100062-1 On/Off Valve Backup Ring, Seal

HJ-A-0275-014 or HJ-400043-014 On/Off Valve O-Ring

HJ-A-0275-006 or HJ-400043-006 On/Off Valve O-Ring

HJ-006933-1 or HJ-100059-1 On/Off Valve Seat Poppet, SST

HJ-006934-1 or HJ-100060-1 On/Off Valve Poppet, SST

 

Key Benefits

  • Restores Valve Sealing Integrity – Eliminates leaks and pressure loss
  • Improves Response Time – Faster, more precise on/off control
  • Extends Valve Service Life – Reduces internal wear
  • Reduces Downtime – Prevents unexpected valve failure
  • Cost-Effective Repair – Avoids full valve replacement

Applications

  • Industrial waterjet cutting systems
  • Automotive manufacturing (robotic cutting and trimming)
  • Aerospace component cutting
  • Metal, stone, and composite cutting
  • High-production environments

** 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.

© 2026 HJ WATERJET. ALL RIGHTS RESERVED.

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