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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

  • 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,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

  • 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

  • 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

  • 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

  • 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

  • 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,0.2to 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

  • 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

  • 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

  • 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

  • Switch,Dryer Boosting
    Switch,Dryer Boosting
    • FANTECH
    • Item # 4YM38
    • Mfr. Model # DB10
    • Pressure Sensing Switch Kit, Activates Booster Fan with Dryer

  • 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

  • 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

  • Pressure Switch,.05-2.0
    Pressure Switch,.05-2.0
    • ROBERTSHAW
    • Item # 6XJU4
    • Mfr. Model # 2374-501
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) 0.02 to 0.8, Switch Type SPDT, Pressure...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 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

  • Switch,Duct Pressure
    Switch,Duct Pressure
    • TJERNLUND
    • Item # 5C968
    • Mfr. Model # PS1503
    • Duct Pressure Switch, 24/115/230/277 VAC

  • 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

  • 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

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G362
    • Mfr. Model # P32AC-1C
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) 0.135 To 0.525, SPDT Switch...More

  • Pressure Switch,Differential, SPDT
    Pressure Switch,Differential, SPDT
    • JOHNSON CONTROLS
    • Item # 20RG53
    • Mfr. Model # P32AF-13C
    • Pressure Switch,Differential, SPDT

  • Differential Air Pressure Switch
    Differential Air Pressure Switch
    • JOHNSON CONTROLS
    • Item # 40G364
    • Mfr. Model # P32AC-8C
    • Differential Air Pressure Switch, HVAC/General Purpose, Differential (In. WC) .045 To .195, SPDT Switch Type,...More

  • Pressure Sensing Switch,.05-12
    Pressure Sensing Switch,.05-12
    • ROBERTSHAW
    • Item # 6XJU3
    • Mfr. Model # 2374-500
    • Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) 0.02 to 0.8, Switch Type SPDT, Pressure...More

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