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An extensively tested, cost-effective and easy to operate valve.

Pacbrake’s PH1 PowerHalt air intake emergency shut-off valve provide a reliable and safe method of shutting down the engine.

PH1 is an cost-effective solution for your safety needs. This option is recommended when the operator works in close proximity to the equipment.


PH1 Highlights

  • Universal applications
  • 1.75" to 2.5" sizes available
  • Compact and lightweight
  • Low maintenance, pull cable valve
  • Rigorous vibration, corrosion and endurance testing
  • Designed to withstand large temperature ranges
  • A complete installation all in one box
  • Easy installation and low part count

PH1 Specifics

  1. Manual reset knob
  2. Pull cable activation
  3. Corrosion resistant materials
  4. Maintenance free butterfly design
  5. 1.75"-2.5" valve sizes available

PH1 Pull Cable Option

  • Stainless steel high quality pull cables are pre-assembled for easy installation and safety
  • Braided lines capable of a tight radius
  • Red T-handle with large nameplate for easy location
  • Pull cable sizes: 2', 4', 6', 8' & 10'

PH1 Kits:

  • Choose your PH1 Valve then select the appropriate mounting group and pull cable (2', 4', 6', 8' & 10') for your application.
  • 2 hour installation times.


How do I know if my valve is closed?

All of the manual reset PowerHalt Air Shut-Off Valves (PH1, PH2, PH5) have a large red reset knob which indicates the position of the flap within the valve. The PH2 and PH5 shut-off valves also have an option to include a microswitch as an electronic indicator of valve position.

The switch is available in Normally Open and Normally Closed configurations. The wiring from the switch can be led to a panel light or fed directly into your equipment systems.

Can I use my PH1 PowerHalt system to protect my auxiliary PTO/work-mode equipment?

No, you can't.

Can manual reset be achieved easily and without placing workers at risk?

Frequent security checks may prove cumbersome when manually resetting a valve if it is difficult to access. Automatic reset are better suited for these applications. Routing of the switch or pill cable is an important consideration to make. Pull cable are a great low cost option if your application and regulations allow.

Warranty Registration

Register your product for warranty HERE.