Pressure Switches

Transcat distributes the most reliable pressure switches for general purpose, air/water, gas and differential applications. The pressure switch will detect changes and open or close an electrical contact according to a predetermined set point. Differential switches sense pressure from both a low and a high pressure port and respond to the difference. Switches may be categorized according to their technology, such as diaphragm or piston. Our pressure device selection features switches with a wide scope of ranges to support virtually every application. We also offer Dwyer switch/gage combination instruments that measure and control positive, negative or differential pressures of air and gases.

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  • Dwyer Instruments 3002MRS
    Dwyer Instruments 3002MRS
    Order # 3002MRS Mfg # 3002MRS
    $789.85
  • Dwyer Instruments 3002MR
    Dwyer Instruments 3002MR
    Order # 3002MR Mfg # 3002MR
    $757.90
  • Dwyer Instruments 3000MR-0
    Dwyer Instruments 3000MR-0
    Order # 3000MR-0 Mfg # 3000MR-0
    $757.90
  • Pressure Switch,Brass,5PSI
    Dwyer Instruments A6-651221
    Order # A6-651221 Mfg # A6-651221
    $35.65

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  • Dwyer Instruments A6-353221
    Dwyer Instruments A6-353221
    Order # A6-353221 Mfg # A6-353221
    $39.15
  • Differential Pressure Transmitter, range 0-25" w.c
    Dwyer Instruments 668-7
    Order # 668-7 Mfg # 668-7
    $280.30
  • Dwyer Instruments A3100
    Dwyer Instruments A3100
    Order # A3100 Mfg # A3100
    $798.15
  • Dwyer Instruments A3050
    Dwyer Instruments A3050
    Order # A3050 Mfg # A3050
    $798.15
  • Dwyer A3030 PHOTOHELIC Pressure Switch/Gage
    Dwyer Instruments A3030
    Order # A3030 Mfg # A3030
    $798.15
  • Dwyer Instruments A3010
    Dwyer Instruments A3010
    Order # A3010 Mfg # A3010
    $798.15
  • Dwyer Instruments A3004
    Dwyer Instruments A3004
    Order # A3004 Mfg # A3004
    $798.15
  • Dwyer Instruments A3000-00
    Dwyer Instruments A3000-00
    Order # A3000-00 Mfg # A3000-00
    $842.80
  • Dwyer A3000-0 Photohelic Pressure Switch/Gage
    Dwyer Instruments A3000-0
    Order # A3000-0 Mfg # A3000-0
    $798.15
  • Pressure Switch,Brass,7PSI A6-751221
    Dwyer Instruments A6-751221
    Order # A6-751221 Mfg # A6-751221
    $35.65
  • Dwyer Instruments A6-853221
    Dwyer Instruments A6-853221
    Order # A6-853221 Mfg # A6-853221
    $39.15
  • Dwyer Instruments 1910-20 Low Differential Pressure Switch, 4.0-20.0 range
    Dwyer Instruments 1910-20 Low Differential Pressure Switch, 4.0-20.0 range
    Order # 1910-20 Mfg # 1910-20
    $91.65
  • Dwyer Instruments 1910-00 Low Differential Pressure Switch, 0.07 to 0.15 range
    Dwyer Instruments 1910-00 Low Differential Pressure Switch, 0.07 to 0.15 range
    Order # 1910-00 Mfg # 1910-00
    $97.05
  • Dwyer Instruments ADPS-03-2-N
    Dwyer Instruments ADPS-03-2-N
    Order # ADPS-03-2-N Mfg # ADPS-03-2-N
    $32.00
  • Ashcroft B424B-100PSI Pressure Switch 100 psi
    Ashcroft B4
    Order # B424B-100PSI Mfg # B424B-100PSI
    Special Price $229.73 Save 1 % Regular Price $232.06
  • Dwyer Instruments 1638-1 Large Diaphragm Pressure Switch, 0.20 to 1.0 Range
    Dwyer Instruments 1638-1 Large Diaphragm Pressure Switch, 0.20 to 1.0 Range
    Order # 1638-1 Mfg # 1638-1
    $616.60
  • Dwyer Instruments 1950G-0-B-24-NA Differential Pressure Switch, Weatherproof, 0.15-0.50 range
    Dwyer Instruments 1950G-0-B-24-NA Differential Pressure Switch, Weatherproof, 0.15-0.50 range
    Order # 1950G-0-B-24-NA Mfg # 1950G-0-B-24-NA
    $631.40
  • Dwyer Instruments A3020
    Dwyer Instruments A3020
    Order # A3020 Mfg # A3020
    $798.15
  • Dwyer Instruments SA1111E-S5-K1
    Dwyer Instruments SA1111E-S5-K1
    Order # SA1111E-S5-K1 Mfg # SA1111E-S5-K1
    $738.80
  • Dwyer Instruments A3310
    Dwyer Instruments A3310
    Order # A3310 Mfg # A3310
    $820.50
  • Dwyer Instruments DA-7031-153-7
    Dwyer Instruments DA-7031-153-7
    Order # DA-7031-153-7 Mfg # DA-7031-153-7
    $1,096.60
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