美国进口
Imported from USA

霍夫曼专业蒸汽排气阀
Hoffman Specialty Steam Vents


美国贝尔-高赛特
Bell & Gossett

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. 401431 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)

Bell & Gossett offers several useful engineering tools for easy sizing of every area of a building. Simple to navigate software gives you accurate information and up-to-date documentation downloadable straight into your submittal package.

Some tools require a registered account: New User Registration | Existing User Password Help

ESP-Design Plus Bell & Gossett: Multi-Stage, Pressure Booster Packages, Wastewater, Vertical Turbines
ESP-Plus Bell & Gossett Pump Selection: Circulators, End Suction, Closed-Coupled, Inline, Double Suction
ESP-Tanks Bell & Gossett Compression/Expansion Tanks and Accessories (downloadable app)
ESP-Thermal Bell & Gossett Gasket Plate & Frame and, Brazed Plate Heat Exchangers
ESP-UTUBE Bell & Gossett U-Tube Heat Exchangers
ESP-Parts Parts Selection
Steam-2000 Steam 2000 Selection
Steam-1140 Series 1140 Steam Service Regulators
Water-1140 Series 1140 Water Service Regulators
Steam-Traps Steam Traps Selection
CAD Drawings CAD Drawings
System Syzer System Syzer (available online, PC download, and iOS app)
System Syzer Psychrometry System Sizing related to coil cooling (link downloads .exe file)
Steam-Pipe Steam Pipe Sizing
Steam-Loss Steam Loss Through Failed Trap
Flash-Steam Flash Steam Sizing
Condensate-Pipe Condensate Pipe Sizing
Mobile Catalog iOS iPhone & iPad Mobile Product Catalog
Mobile Catalog Android Android Device Mobile Product Catalog