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Hoffman 401488, Model 79 Water Vent Valve, 1/2 " NPT Female Straight Shank, 3/4" Male, 75 PSI Max

SKU #: 401488
Brand: Hoffman
In Stock! (Ships Today !) This item is In Stock at our warehouse distribution center. Stock orders placed Monday through Friday by 1:00 pm EST. will be shipped the same day. Orders placed Friday after 1:00 pm through Sunday will be shipped on Monday.

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Ship Weight (2.00 lbs)


Hoffman Water Main Vent Valve


  • For use on hot or cold or glycol water mains and process applications with specific gravity greater than 0.7
  • Tapped at top for 1⁄8″ NPT safety drain connection for discharging moisture
  • Removable top
  • Built-in Check Valve
  • 1/2″ NPT female and 3⁄4″ NPT male straight shank
  • Maximum operating pressure 75 psig (5.2 bar)*
  • Maximum hydrostatic pressure 200 psig (13.8 bar)
  • Maximum temperature 250˚F

*Drop away pressure (maximum pressure against which the vent can open).


Please see the manuals for specifications on this item

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