Hoffman Main Steam Vents

Hoffman Main Steam Vents

Information:

Model 4A Part No.401413 Air Valve (non-vacuum)

  • Float-type thermostatic vent
  • For residential or small one-pipe or two-pipe systems
  • Single non-adjustable port
  • 1/2 NPT female and 3/4  NPT male straight shank
  • Install 6-10″ (150-250mm) above horizontal return and 18″ (450mm) above the boiler water line
  • Maximum operating pressure 2 psig (0.13 bar)*
  • Maximum pressure 10 psig (0.7 bar)

Model 75 Part No. 401434 75H Part No. 401437 Air Valve (non-vacuum)

  • Float-type thermostatic vent
  • For medium and large systems
  • Single non-adjustable port
  • 1/2 NPT female and 3/4 NPT male straight shank
  • Maximum operating pressure*
    • Model 75 3 psig (0.2 bar)
    • Model 75H 10 psig (0.7 bar)
  • Maximum pressure 15 psig (1.0 bar)

Model 76 Part No. 401432 Vacuum Valve

  • Float-type themostatic vent
  • For medium and large one-pipe vacuum systems
  • Single non-adjustable port
  • 1/2 NPT female and 3/4 NPT male straight shank
  • Install 6-10″ (150-250mm) above horizontal return and 8″ (450mm) above the boiler water line
  • Maximum operating pressure 3 psig (0.2 bar)
  • Maximum pressure 15 psig (1.0 bar)

Special Steam Vents

Model 3 Part No. 401419 Steam Air Line Valve

  • Thermostatic vent (no float)
  • For Air Line or Paul Systems
  • Inlet 1/8 NPT, outlet 1/4 NPT
  • Maximum operating pressure 25 psig (1.7 bar)* to vacuum
  • Maximum pressure 25 psig (1.7 bar)

Model 4 Part No. 401416 Quick Valve

  • Thermostatic air vent
  • For steam systems and process equipment
  • Operates on temperature change only; does not close against water
  • Must be installed 6-10″ (150-250mm) above horizontal return and 18″ (450mm) above the boiler water line
  • 1/2 NPT female and 3/4 NPT male straight shank
  • Maximum operating pressure 25 psig (1.7 bar)*
  • Maximum pressure 25 psig (1.7 bar)

Model 74 Part No. 401429 Steam Unit Heater Air Valve 

  • Float-type thermostatic vent • Single non-adjustable port
  • 1/2 NPT female and 3/4 NPT male straight shank
  • Install 6-10″ (150-250mm) above horizontal return and 18″ (450mm) above the boiler water line
  • Maximum operating pressure 35 psig (2.4 bar)*
  • Maximum pressure 35 psig (2.4 bar)
  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • 401429 Hoffman Model 74 Steam Unit Heater Air Valve

    401429 Hoffman Model 74 Steam Unit Heater Air Valve

    Hoffman

    $114.95
    401429 Hoffman Model 74 Steam Unit Heater Air Valve. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: Float-type thermostatic vent • Single non-adjustable port 1/2 NPT female and 3/4...
    $114.95
    Qty in Cart: 0
    Quantity:
    Price:
    $114.95
    Subtotal:
  • 401416 Hoffman Model 4 Quick Valve

    401416 Hoffman Model 4 Quick Valve

    Hoffman

    $64.95
    401416 Hoffman Model 4 Quick Valve. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: Thermostatic air vent For steam systems and process equipment Operates on temperature change only;...
    $64.95
    Qty in Cart: 0
    Quantity:
    Price:
    $64.95
    Subtotal:
  • 401419 Hoffman Model 3 Steam Air Line Valve

    401419 Hoffman Model 3 Steam Air Line Valve

    Hoffman

    $128.95
    401419 Hoffman Model 3 Steam Air Line Valve. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: Model 3 Part No. 401419 Steam Air Line Valve Thermostatic vent (no float) For Air Line or...
    $128.95
    Qty in Cart: 0
    Quantity:
    Price:
    $128.95
    Subtotal:
  • 401432 Hoffman Model 76 Vacuum Valve

    401432 Hoffman Model 76 Vacuum Valve

    Hoffman

    $185.95
    401432 Hoffman Model 76 Vacuum Valve. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: Float-type themostatic vent For medium and large one-pipe vacuum systems Single non-adjustable...
    $185.95
    Qty in Cart: 0
    Quantity:
    Price:
    $185.95
    Subtotal:
  • 401437 Hoffman Model 75H Air Valve Non-Vacuum

    401437 Hoffman Model 75H Air Valve Non-Vacuum

    Hoffman

    $108.50
    401437 Hoffman Model 75H Air Valve Non-Vacuum. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: Float-type thermostatic vent For medium and large systems Single non-adjustable port 1/2...
    $108.50
    Qty in Cart: 0
    Quantity:
    Price:
    $108.50
    Subtotal:
  • 401434 Hoffman Model 75 Air Valve Non-Vacuum

    401434 Hoffman Model 75 Air Valve Non-Vacuum

    Hoffman

    $98.50
    401434 Hoffman Model 75 Air Valve Non-Vacuum. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: Float-type thermostatic vent For medium and large systems Single non-adjustable port 1/2...
    $98.50
    Qty in Cart: 0
    Quantity:
    Price:
    $98.50
    Subtotal:
  • 401413 Hoffman Model 4A Air Valve Non-Vacuum

    401413 Hoffman Model 4A Air Valve Non-Vacuum

    Hoffman

    $42.50
    401413 Hoffman Model 4A Air Valve Non-Vacuum. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Specifications: Float-type thermostatic vent For residential or small one-pipe or two-pipe systems Single...
    $42.50
    Qty in Cart: 0
    Quantity:
    Price:
    $42.50
    Subtotal:
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