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Product Code: C0.041
VB9 Standard Unloader Valve with Handwheel

Sturdy steel and brass construction
  • Resetting of bypass at around 40 bar
  • 4 MPa which allows periods of non-labour before the release for bypass setting.
  • Hexagonal shaped check valve to avoid jamming.
  • Version with knob, fitted with locknuts for min. and max. pressure regulation.
  • Possibility to fit a venturi injector, on delivery, for chemicals.
  • IMPORTANT SAFETY NOTE: BEFORE powering the system: 1. the unloader valve MUST be set at MINIMUM pressure; 2. The bypass port MUST be open; 3. Then set the unloader to the required pressure (which MUST be LESS than the maximum unloader pressure of the unloader valve AND LESS than the maximum pressure of your equipment); 4. Set the locking nuts so this pressure (the running pressure and the lock line pressure) cannot be exceeded.
  • CAUTION: This is high pressure equipment and if the above safety and set up rules are not followed, serious damage to equipment and injury to humans can occur. The caps and joints can be blown clean out of their threads which cause dangerous projectiles. Please be free to ring 01522 787978 if you need any assistance.
  • £164.52 incl tax
    + -
    Pressure regulating unloader valve with port for pressure gauge.
    At gun shut off, the water flow is bypassed at reduced pressure.
    C0.041: Unloader Valve:
  • Max Pressure: 220 bar / 22 MPa / 3200 psi
  • Permissible Pressure: 250 bar / 25 MPa / 3650 psi
  • Flow Rate: 30 L/min / 8 USGpm
  • Max Water Temperature: 90°C / 195 °F
  • Body: Brass & Stainless Steel
  • Trapped Pressure Valve
  • Inlet: 3/8”F BSP
  • Outlet: 3/8”F BSP
  • Bypass Port: 3/8"F BSP
  • Gauge Port: ¼”F BSP
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