Universal Low Profile 87K On/Off Valve Assembly - 4mm Air Inlet

The Universal On/Off Valve Assembly 87K is a low-profile high-pressure valve assembly designed to control water flow at the cutting head in Flow 87,000 psi waterjet systems. Its compact configuration supports tight cutting head layouts while delivering fast, repeatable open-and-close response for precise jet control. This assembly helps maintain clean starts and stops, reduce weeping at the nozzle, and protect downstream consumables by keeping high pressure flow tightly controlled during cutting cycles.

Included parts:

• On/off Valve Body (014554-1)
• Back-up Ring (014555-1)
• 0.061 Seal (014556-1)
• Poppet (014557-1)
• Valve Seat (014558-1)
• Retainer Collar (710867-1)
• Nozzle Body Collar (710869-1)
• Actuator Assembly (014559-2)
• Anti-Vibration Collar (044348-1)
• Anti-Vibration Gland (044347-1)
• Anti-Vibration Collet (044358-1)
• O-Ring (A-0275-014)
• O-Ring (B-8075-005)
  

Related products:

• Universal Low Profile 87K On/Off Valve Assembly - 6mm Air Inlet (014660-1)
• Universal On/Off Valve Seal Repair Kit (014988-1) — includes the key seals, poppet, seat, and backup ring needed to refresh the valve’s sealing components.
  

Service tip: When servicing a universal on/off valve, replace the seat and poppet as a matched pair and inspect the valve body for washout, scoring, or damaged sealing surfaces. A worn body or reused sealing component can cause slow reseat, weeping, or reduced cutting consistency even after new parts are installed.