Hoffman Water Vent Valves

Hoffman Water Vent Valves

Model 550 – Part No. 401476 – Air Chamber

  • For use on convectors which are not provided with built-in air chambers or air collection fittings • Brass construction.
  •  1⁄4″ NPT straight shank connection tapped at the top for 1⁄8″ NPT connection
  • 6 cubic inch (98.3cm) volume
  • Maximum water pressure 100 psig (6.9 bar)
  • Maximum steam pressure 25 psig (1.7 bar)

Model 508 – Part No. 401475 Water Vent Valve

  • For automatic or manual venting systems
  • Ideal for use with Model 550 Air Chamber
  • Disc-type vent
  • Built-in check valve
  • Cartridge with discs can be replaced without draining the system
  • 1⁄8″ NPT straight shank
  • Maximum water pressure 50 psig (3.5 bar)
  • Maximum pressure 50 psig (3.5 bar)

Model 790 – Part No. 401479 Water Vent Valve

  • For removing air from convectors, baseboard and wall radiation
  • Safety drain connection for discharging moisture
  • Fitting and ferrule for 3⁄16″ (4.8mm) OD tubing
  • Telescopic siphon tube
  • 1⁄8″ NPT straight shank
  • Maximum operating pressure 30 psig (2.1 bar)*
  • Maximum pressure 30 psig (2.1 bar)

Model 791 – Part No. 401482 Water Vent Valve

  • For convectors and small mains
  • Safety drain connection for discharging moisture
  • Fitting and ferrule for 3⁄16″ (4.8mm) OD tubing
  • Telescopic siphon tube
  • 1⁄4″ NPT straight shank
  • Maximum operating pressure 50 psig (3.5 bar)*
  • Maximum pressure 50 psig (3.5 bar)

Model 792 – Part No. 401494 High Pressure Water Vent Valve

  • For releasing air from hot or cold water or glycol mains,hydronic heating and chilling systems, storage and processing tank filters, centrifugal pumps with specific gravity greater than 0.7
  • Cast iron body and cover, stainless steel interior
  • Maximum operating pressure 250 psig (17.3 bar)*
  • Maximum hydrostatic pressure 350 psig (24.2 bar)
  • Maximum temperature 300°F (149°C)
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    401494 Hoffman Model 792 High Pressure Water Vent Valve

    Hoffman

    $324.50
    401494 Hoffman Model 792 High Pressure Water Vent Valve Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog 401494 Hoffman Model 792 High Pressure Water Vent Submittal Sheet Specifications: For releasing air...
    $324.50
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  • 401482 Hoffman Model 791 Water Vent Valve
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    401482 Hoffman Model 791 Water Vent Valve

    Hoffman

    $111.50
    401482 Hoffman Model 791 Water Vent Valve. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: For convectors and small mains Safety drain connection for discharging moisture Fitting and...
    $111.50
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    401479 Hoffman Model 790 Water Vent Valve

    Hoffman

    $97.50
    401479 Hoffman Model 790 Water Vent Valve. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: For removing air from convectors, baseboard and wall radiation Safety drain connection for...
    $97.50
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  • 401475 Hoffman Model 508 Water Vent Valve
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    401475 Hoffman Model 508 Water Vent Valve

    Hoffman

    $14.50
    401488 Hoffman Model 79 Water Main Vent Valve. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: For automatic or manual venting systems Ideal for use with Model 550 Air Chamber Disc-type...
    $14.50
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  • 401476 Hoffman Model 550 Air Chamber
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    401476 Hoffman Model 550 Air Chamber

    Hoffman

    $88.95
    401488 Hoffman Model 79 Water Main Vent Valve. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: For use on convectors which are not provided with built-in air chambers or air...
    $88.95
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