Blocking Valves

Blocking Valves


Prestobloc pilot-operated blocking fittings are designed for mounting directly to the cylinder ports. Available with push-in or threaded terminations, these function fittings permit safe and immediate stopping of the piston rod by blocking the cylinder supply and exhaust. Operation:

  • Pilot operated diaphragm maintains full flow when pilot signal is present.
  • Spring closes the poppet valve locking air in the cylinder when the pilot signal is removed.
  • Prestobloc fittings used in conjunction with Prestoflow flow regulators are mounted on inlet and outlet ports.
  • Pilot signal should be independent from the control valve.

Maximum Working Pressure: 145 PSI
Operating Temperature: +5°- +150° F
Body Material: Zinc alloy epoxy coated
Bolt Material: Brass

  • Compact
  • Direct mounting
  • Safety
  • Independent control

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