top of page

790 dual action breather valve

Product description:

The 790 is an automatic dual action valve designed to maximize the reliability of breather valves in critical conditions.The 790 is primarily used in the container industry, transportation cases and other military, industrial and medical applications.


The 790 may be clamped in a 7/8 inch (22.2 mm) hole or screwed in a 7/8 inch (22.2 mm) 32 UN-2B threaded hole where the minimum wall thickness is 1/16 inch (1.62 mm) and a maximum of 5/16 inch (7.94 mm).

Features & benefits

  • High efficiency, reliability and flow in any position or hostile environment

  • Manual override button for quick relief

  • Corrosion-resistant materials

  • Compact and lightweight: approximate weight 0.75 ounces (21 grams)

  • Individually calibrated and tested

  • Available coatings: clear anodized or black anodized standard; EMI/RFI coating available

Specifications & technical information


  • Body, stem and nut: Aluminum

  • Retaining ring: Stainless steel

  • Spring: Stainless steel

Pressure tolerance:

  • Cracking pressure ±15% nominal

  • Reseat within 20% of nominal

Standard pressure and vacuum settings:

  • 0.1 to 5.0 psig

  • Other pressures available on request (minimum orders apply)

Additional information

bottom of page