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. 401428 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)

Guidelines

    Catalog Pages

      General Selection Tools:

      • ESP-PLUS for B&G Centrifugal Pumps, Booster Pumps, Pump Accessories, and Air Separator
      • ESP-PARTS for replacement parts selection
      • ESP-TANKS for replacement parts selection
      • CAD Drawings for 2D and 3D dimensional drawings in many formats

      Heat Exchanger Product Selection

      Steam + Water Pressure Reducing Values

      Sizing Tools:

      Report Bugs/Request Enhancements
      Please email the following address to report issues and request enhancements: ebusiness.support@xyleminc.com

      Consult your local Bell & Gossett Representative for additional assistance.

      Xylem Water Systems Australia Pty. Ltd
      Unit 3/1 Federation Way,
      Chifley Business Park
      3194 Mentone Victoria
      Australia
      Tel. +61 3-95517333
      Fax +61 3-95510321
      Australia Distributors

      Queensland
      Brown Brothers Engineers
      50 Nestor Drive
      Meadowbrook QLD 4131
      Phone:07 3200 6488
      Fax:07 3200 3822
      New South Wales and Australian Capital Territory
      Brown Brothers Engineers
      211-215 Walters Rd
      Arndell Park NSW 2148
      Phone:02 9671 3666
      Fax:02 9671 3644
      Victoria and Tasmania
      Brown Brothers Engineers
      8 Damien Court
      Dandenong Vic 3175
      Phone:03 9793 9999
      Fax:03 9793 0022
      Western Australia
      Advanced Pump Technologies
      72 May Holman Drive
      Bassendean WA 6054
      Ph: 08 6143 1000
      Fx: 08 6143 1009
      South Australia and Northern Territory
      WBS Pumps
      6A Lasalle Street
      Dudley Park SA 5008
      Phone:08 8344 9927
      Fax:08 8344 9925
      New Zealand Distributors
      Christchurch (head office)
      Brown Brothers Engineers
      197 Durham Street
      Christchurch 8011
      New Zealand
      Phone: 3 365 0279
      Fax: 3 366 6616
      Dunedin
      Brown Brothers Engineers
      10 Timaru Street
      Dunedin 9012
      New Zeland
      Phone: 3 456 2562
      Fax: 3 456 2564
      Timaru 
      Brown Brothers Engineers
      Unit 6/39 North Street
      Timaru 7910
      New Zealand
      Phone: 3 683 1686
      Fax: 3 683 1687
      Auckland
      Brown Brothers Engineers
      124A Hugo Johnston Drive
      Penrose, Auckland 1061
      New Zealand
      Phone: 9 525 8282
      Fax: 9 525 8284
      Hamilton
      Brown Brothers Engineers
      97C Norton Road
      Frankton, Hamilton 3204
      New Zeland
      Phone: 7 847 5280
      Fax: 7 847 1580
      Wellington
      Brown Brothers Engineers
      9 Aglionby Street
      Lower Hutt, Wellington 5010
      New Zealand
      Phone: 4 570 1500
      Fax: 4 570 1499