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Halkey Roberts

Pressure Relief Products


750 PRV

Product Information

The 750RP Pressure Relief and 750RV Vacuum Relief valves are designed for high precision applications requiring exact automatic pressure or vacuum relief over a wide range of pressure differentials.

These valves are used in a variety of applications including medical and surgical equipment, aircraft electronics, and other applications.

The valves may be clamped in a 9/16 inch (14.3mm) hole or screwed in a 9/16 inch (14.3mm) UN-2B threaded hole where the minimum wall thickness is 1/16 inch.


Features and Benefits

  • Provide precision relief over a wide range of differentials
  • Compact and lightweight: approx. weight 0.30 ounces (8.5 grams)
  • Individually calibrated and tested
  • Self-aligning poppet allows for repeatable cracking and reseating from -65°F. to 180°F. (-54°C. to 82°C.)
  • Available finishes: 
    • Clear anodized or black anodized standard
    • EMI/RFI coating available

Specifications and Technical Information

  • Materials:
    • Body, stem and nut: aluminum
    • Retaining ring:  stainless steel
    • Spring: stainless steel
  • Pressure tolerance cracking pressure ±15% nominal.  Reseat within 20% of nominal.
  • Available spring pressures:
    • 0.1 to 20.0 psi
    • Other pressures available on request (minimum orders apply)

Information Downloads

Note:  "C" prefix indicates HR drawing available for our customers.  When ordering, actual part number does not include "C" prefix.


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