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Duct Pressure Switches

45 results found that include 45 products

Install a duct pressure switch from Grainger to help your HVAC system do its job. An air switch senses positive, negative or differential air pressure and actuates an internal switch. Duct pressure switches automatically start and stop auxiliary devices like electronic air cleaners, duct heaters, humidifiers, exhaust fans and duct booster fans. Rely on Grainger for a wide range of duct pressure switch options.Close

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  • Switch,Air Sensing
    Switch,Air Sensing
    • COLUMBUS ELECTRIC
    • Item # 2E462
    • Mfr. Model # GRH3AD
    • Multi Purpose Air Sensing Switch, Switch Action SPDT, Differential 0.02 to 0.8 Inches WC, Mounting Location...More

  • Pressure Sensing Switch,1-1/2" D
    Pressure Sensing Switch,1-1/2" D
    • SUPCO
    • Item # 407L09
    • Mfr. Model # NS2000031
    • Pressure Sensing Switch, HVAC/General Purpose, SPDT Switch Type, Pressure Setting Range (In. WC) 0.10 to...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 3ZM92
    • Mfr. Model # AFS-222
    • General Purpose Air Sensing Switch, Switch Action SPDT, Pressure Setting Range WC 0.05 to 12.0 Inches, Sample...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 4XB70
    • Mfr. Model # RFS-4150
    • Air Sensing Switch, General Purpose, SPDT, Pressure Setting Range 0.12-5.0 In WC, Integral Barbed Sample Line...More

  • Air Sensing Switch,Adjustable
    Air Sensing Switch,Adjustable
    • CLEVELAND CONTROLS
    • Item # 6XPX7
    • Mfr. Model # NS2-0000-05
    • Air Sensing Switch, HVAC OEM, Differential (In. WC) 0.03 to 0.09, SPDT Switch Type, Pressure Setting Range...More

  • Air Sensing Switch,Fixed
    Air Sensing Switch,Fixed
    • CLEVELAND CONTROLS
    • Item # 6XPX9
    • Mfr. Model # DFS-221-112-395
    • Air Sensing Switch, HVAC, SPDT Switch Type, Pressure Setting Range (In. WC) 0.05, Electrical Rating 300 VA...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 3ZM96
    • Mfr. Model # RSS-495-011
    • Air Sensing Switch, Switch Action SPDT, Pressure Setting Range WC 0.20 to 1.0 Inches, Sample Line Connector...More

  • Air Sensing Switch,Auto Reset,SPDT
    Air Sensing Switch,Auto Reset,SPDT
    • POWERS CONTROLS
    • Item # 40PN35
    • Mfr. Model # 141-0518
    • Air Sensing Switch, Auto Reset, Differential (In. WC) 0.6 to 1.5, SPDT Switch Type, Pressure Setting Range...More

  • Pressure Switch,Differential,0.8to 4InWC
    Pressure Switch,Differential,0.8to 4InWC
    • DWYER INSTRUMENTS
    • Item # 4FTP2
    • Mfr. Model # ADPS-05-2-N
    • Pressure Switch, Differential, 0.8 to 4.0 In WC Differential, Burst Pressure 40 In WC, Port Type 1/4 In Slip...More

  • Airflow Switch,Auto Reset,SPDT
    Airflow Switch,Auto Reset,SPDT
    • SIEMENS
    • Item # 2KGR4
    • Mfr. Model # 141-0574
    • Airflow Switch, Auto Reset, Differential 0.06 To 0.6 WC, SPDT Switch Type, Pressure Setting Range 0.05 To 1.0...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 3ZM94
    • Mfr. Model # AFS-460
    • Air Sensing Switch, Switch Action SPST, Pressure Setting Range WC 0.4 to 12.0 Inches, Sample Line Connector...More

  • Pressure Switch,Differential,0.2to 2InWC
    Pressure Switch,Differential,0.2to 2InWC
    • DWYER INSTRUMENTS
    • Item # 4FTP1
    • Mfr. Model # ADPS-03-2-N
    • Pressure Switch, Differential, 0.2 to 2.0 In WC Differential, Burst Pressure 40 In WC, Port Type 1/4 In Slip...More

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G363
    • Mfr. Model # P32AC-2C
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) .045 To .195, SPDT Switch Type,...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 3ZM93
    • Mfr. Model # AFS-405
    • Air Sensing Switch, Switch Action SPDT, Pressure Setting Range WC 0.05 to 12.0 Inches, Sample Line Connector...More

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G365
    • Mfr. Model # P32AF-1C
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) .018 To .120, SPDT Switch Type,...More

  • Pressure Switch,Differential,0.12to1.6In
    Pressure Switch,Differential,0.12to1.6In
    • DWYER INSTRUMENTS
    • Item # 4FTN9
    • Mfr. Model # ADPS-04-2-N
    • Pressure Switch, Differential, 0.12 to 1.6 In WC Differential, Burst Pressure 40 In WC, Port Type 1/4 In Slip...More

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G350
    • Mfr. Model # P233A-4-PAC
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) 0.1, SPDT Switch Type, Pressure...More

  • Air Sensing Switch,Manual Reset,SPST
    Air Sensing Switch,Manual Reset,SPST
    • SIEMENS
    • Item # 40PN37
    • Mfr. Model # 141-0575
    • Air Sensing Switch, Manual Reset, Differential (In. WC) 0.06 to 0.6, SPST Switch Type, Pressure Setting Range...More

  • Pressure Sensing Switch,Adjustable
    Pressure Sensing Switch,Adjustable
    • TJERNLUND
    • Item # 14U189
    • Mfr. Model # PS2501
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) .02, SPDT Switch Type, Pressure Setting...More

  • Switch,Dryer Boosting
    Switch,Dryer Boosting
  • Switch,Duct Pressure
    Switch,Duct Pressure
  • Pressure Sensing Switch,General Purpose
    Pressure Sensing Switch,General Purpose
    • FANTECH
    • Item # 15W826
    • Mfr. Model # FPS 10
    • Pressure Sensing Switch, General Purpose, Differential (In. WC) .005 - 1.0, SPDT Switch Type, Pressure...More

  • Pressure Sensing Switch,.05-12
    Pressure Sensing Switch,.05-12
    • ROBERTSHAW
    • Item # 6XJU2
    • Mfr. Model # 2374-499
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) 0.02 to 0.8, Switch Type SPDT, Pressure...More

  • Switch,Air Sensing
    Switch,Air Sensing
    • CLEVELAND CONTROLS
    • Item # 3ZM97
    • Mfr. Model # RSS-498-015
    • Air Sensing Switch, Switch Action SPDT, Pressure Setting Range WC 1.0 to 4.0 Inches, Sample Line Connector...More

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G366
    • Mfr. Model # P32AF-2C
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) .009 To .075, SPDT Switch Type,...More

  • Pressure Sensing Switch,.25-1.0
    Pressure Sensing Switch,.25-1.0
    • ROBERTSHAW
    • Item # 6XJU0
    • Mfr. Model # 2374-495
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) .10, Switch Type SPDT, Pressure Setting...More

  • Pressure Switch,Differential, SPDT
    Pressure Switch,Differential, SPDT
  • Switch,Fan Proving
    Switch,Fan Proving
    • TJERNLUND
    • Item # 4C725
    • Mfr. Model # PS1505
    • Air Sensing Switch, Flue Exhaust Proving, Differential (In. WC) -, - Switch Type, Pressure Setting Range (In....More

  • Dif Pressure Switch,Adjustable
    Dif Pressure Switch,Adjustable
    • DWYER INSTRUMENTS
    • Item # 24Z008
    • Mfr. Model # ADPS-08-2-N
    • Differential Pressure Switch, Air, Pressure Setting Range (In. WC) 0.08 to 1.2, Sample Line Connector Barb...More

  • Pressure Switch,Differential,4 to 10InWC
    Pressure Switch,Differential,4 to 10InWC
    • DWYER INSTRUMENTS
    • Item # 4FTP4
    • Mfr. Model # ADPS-07-2-N
    • Pressure Switch, Differential, 4 to 10 In WC Differential, Burst Pressure 40 In WC, Port Type 1/4 In Slip On...More

  • Pressure Sensing Switch,1-4 WC
    Pressure Sensing Switch,1-4 WC
    • ROBERTSHAW
    • Item # 6XJU1
    • Mfr. Model # 2374-498
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) .10, Switch Type SPDT, Pressure Setting...More

  • Pressure Sensing Switch,SPDT
    Pressure Sensing Switch,SPDT
    • ROBERTSHAW
    • Item # 6XJV2
    • Mfr. Model # 2374-509
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) +/-0.02, SPDT Switch Type, Pressure...More

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