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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  1. Dwyer Instruments 1950-10-2F
    Dwyer Instruments 1950-10-2F EP Differential Pressure Switch 3/11"WC,UL/FM/CSA,SPDT
    Order #: 1950-10-2F
    Mfg #: 1950-10-2F
    Availability: In stock
    $333.85
    EP Differential Pressure Switch 3/11"WC,UL/FM/CSA,SPDT Learn More
  2. Ashcroft B4
    Ashcroft B420B/30PSI Ashcroft Pressure Switch, 30psi Buna-N, 1/4npt Female
    Order #: B420B/30PSI
    Mfg #: B420B/30PSI
    Availability: In stock
    Special Price $213.26 Regular Price $238.29
    Ashcroft Pressure Switch, 30psi Buna-N, 1/4npt Female Learn More
  3. Clearance
    Mid-West Instrument 120AA Piston Differential Pressure Switch,15PSID
    Mid-West Instrument 120AA Piston Differential Pressure Switch,15PSID
    Order #: 120AA-00-ACA-15 PSID
    Mfg #: 120AA-00-ACA-15 PSID
    Availability: In stock
    Special Price $156.26 Regular Price $278.00
    Piston Differential Pressure Switch,15PSID Learn More
  4. Dwyer Instruments PR-2-P2
    Dwyer Instruments PR-2-P2 Gas/Differential Pressure Sw. man. reset, SPST NC, 0.5-5 psig
    Order #: PR-2-P2
    Mfg #: PR-2-P2
    Availability: In stock
    $910.00
    Gas/Differential Pressure Sw. man. reset, SPST NC, 0.5-5 psig Learn More
  5. Dwyer Instruments 3000MR-0
    Dwyer Instruments 3000MR-0 Pressure Switch/Gage,0-0.5"w.c. .01minor divisions
    Order #: 3000MR-0
    Mfg #: 3000MR-0
    Availability: Ships in 3-4 weeks
    $636.50
    Pressure Switch/Gage,0-0.5"w.c. .01minor divisions Learn More
  6. Dwyer Instruments DA-7031-153-2
    Dwyer Instruments DA-7031-153-2 Bourdon Tube Pressure Switch Brass tube, range 0-30" Hg Vac
    Order #: DA-7031-153-2
    Mfg #: DA-7031-153-2
    Availability: Ships in 3-4 weeks
    $903.75
    Bourdon Tube Pressure Switch Brass tube, range 0-30" Hg Vac Learn More
  7. Dwyer 608-02 Differential pressure transmitter
    Dwyer Instruments 608-02 Differential pressure transmitter, range 0-0.5" w.c.
    Order #: 608-02
    Mfg #: 608-02
    Availability: Ships in 3-4 weeks
    $1,304.00
    Differential pressure transmitter, range 0-0.5" w.c. Learn More
  8. Dwyer Instruments MP-001
    Dwyer Instruments MP-001 Mini-Photohelic Differential Pressure Sw/Gauge, 0-1 in H2O
    Order #: MP-001
    Mfg #: MP-001
    Availability: Ships in 3-4 weeks
    $501.30
    Mini-Photohelic Differential Pressure Sw/Gauge, 0-1 in H2O Learn More
  9. Ashcroft NPI-N4-D-L-S02-XEA-200 Pressure Switch, 200PSI
    Ashcroft NPI Pressure Switch, 200PSI
    Order #: NPI-N4-D-L-S02-XEA-200
    Mfg #: NPI-N4-D-L-S02-XEA-200
    Availability: Ships in 3-4 weeks
    Special Price $696.27 Regular Price $777.96
    Pressure Switch, 200PSI Learn More
  10. Dwyer Instruments DPA-7033-153-62
    Dwyer Instruments DPA-7033-153-62 Double Bellows Diff. Pressure Swt,min.deadband,Brass,20psid
    Order #: DPA-7033-153-62
    Mfg #: DPA-7033-153-62
    Availability: Ships in 3-4 weeks
    $1,830.40
    Double Bellows Diff. Pressure Swt,min.deadband,Brass,20psid Learn More
  11. Dwyer Instruments DA-31-3-3A
    Dwyer Instruments DA-31-3-3A Bourdon Tube Pressure Switch Brass tube, range 1/8-20 psig
    Order #: DA-31-3-3A
    Mfg #: DA-31-3-3A
    Availability: Ships in 3-4 weeks
    $979.70
    Bourdon Tube Pressure Switch Brass tube, range 1/8-20 psig Learn More
  12. Dwyer Instruments PGW-156-P1
    Dwyer Instruments PGW-156-P1 Gas/Differential Pressure Sw. W/R ENCL,SPST NC;SPST NO (SPDT)
    Order #: PGW-156-P1
    Mfg #: PGW-156-P1
    Availability: Ships in 3-4 weeks
    $1,419.60
    Gas/Differential Pressure Sw. W/R ENCL,SPST NC;SPST NO (SPDT) Learn More
  13. Dwyer Instruments DA-41-153-11E
    Dwyer Instruments DA-41-153-11E Bourdon Tube Pressure Switch 316SS tube, range 100-1000 psig
    Order #: DA-41-153-11E
    Mfg #: DA-41-153-11E
    Availability: Ships in 3-4 weeks
    $1,976.00
    Bourdon Tube Pressure Switch 316SS tube, range 100-1000 psig Learn More
  14. Dwyer Instruments DA-7031-153-8
    Dwyer Instruments DA Bourdon Tube Pressure Switch Brass Tube,Range 10-200PSIG
    Order #: DA-7031-153-8
    Mfg #: DA-7031-153-8
    Availability: Ships in 3-4 weeks
    $995.30
    Bourdon Tube Pressure Switch Brass Tube,Range 10-200PSIG Learn More
  15. Dwyer Instruments DA-31-153-9
    Dwyer Instruments DA-31-153-9 Bourdon Tube Pressure Switch Brass tube, range 10-300 psig
    Order #: DA-31-153-9
    Mfg #: DA-31-153-9
    Availability: Ships in 3-4 weeks
    $1,082.65
    Bourdon Tube Pressure Switch Brass tube, range 10-300 psig Learn More
  16. Dwyer Instruments DA-21-3-9AS
    Dwyer Instruments DA-21-3-9AS Bourdon Tube Pressure Switch 403SS tube, range 40-350 psig
    Order #: DA-21-3-9AS
    Mfg #: DA-21-3-9AS
    Availability: Ships in 3-4 weeks
    $1,414.00
    Bourdon Tube Pressure Switch 403SS tube, range 40-350 psig Learn More
  17. Dwyer Instruments DA-31-153-8
    Dwyer Instruments DA-31-153-8 Bourdon Tube Pressure Switch Brass tube, range 10-200 psig
    Order #: DA-31-153-8
    Mfg #: DA-31-153-8
    Availability: Ships in 3-4 weeks
    $1,082.65
    Bourdon Tube Pressure Switch Brass tube, range 10-200 psig Learn More
  18. Dwyer Instruments SA1111E-A4-K1
    Dwyer Instruments SA1111E-A4-K1 Diaphragm Operated Pressure Sw. 10 - 150 psig, 1/4" NPT(F), Al
    Order #: SA1111E-A4-K1
    Mfg #: SA1111E-A4-K1
    Availability: Ships in 3-4 weeks
    $554.30
    Diaphragm Operated Pressure Sw. 10 - 150 psig, 1/4" NPT(F), Al Learn More
  19. Dwyer Instruments DA-7021-153-9S
    Dwyer Instruments DA-7021-153-9S Bourdon Tube Pressure Switch 403SS tube, range 10-300 psig
    Order #: DA-7021-153-9S
    Mfg #: DA-7021-153-9S
    Availability: Ships in 3-4 weeks
    $1,381.10
    Bourdon Tube Pressure Switch 403SS tube, range 10-300 psig Learn More
  20. Dwyer Instruments 1627-5
    Dwyer Instruments 1627-5 Dual Pressure Switch .5-6.0 in H2O
    Order #: 1627-5
    Mfg #: 1627-5
    Availability: Ships in 3-4 weeks
    $530.40
    Dual Pressure Switch .5-6.0 in H2O Learn More
  21. Dwyer 1950G
    Dwyer Instruments 1950G-00-B-24-NA Explosion-proof Differential Pressure Switch,.07-.15"w.c.
    Order #: 1950G-00-B-24-NA
    Mfg #: 1950G-00-B-24-NA
    Availability: Ships in 3-4 weeks
    $530.40
    Explosion-proof Differential Pressure Switch,.07-.15"w.c. Learn More
  22. Dwyer Instruments DA-31-153-5
    Dwyer Instruments DA-31-153-5 Bourdon Tube Pressure Switch Brass tube, range 2-60 psig
    Order #: DA-31-153-5
    Mfg #: DA-31-153-5
    Availability: Ships in 3-4 weeks
    $979.70
    Bourdon Tube Pressure Switch Brass tube, range 2-60 psig Learn More
  23. Dwyer 1640
    Dwyer Instruments 1640 Floating Contact Null Switch .01-0.2"wc
    Order #: 1640-0
    Mfg #: 1640-0
    Availability: Ships in 3-4 weeks
    $780.00
    Floating Contact Null Switch .01-0.2"wc Learn More
  24. Dwyer A3000-0 Photohelic Pressure Switch/Gage
    Dwyer Instruments A3000-0 Pressure Switch/Gage 0-.50Wc
    Order #: A3000-0
    Mfg #: A3000-0
    Availability: Ships in 3-4 weeks
    $668.70
    Pressure Switch/Gage 0-.50Wc Learn More
  25. Dwyer Instruments A3020
    Dwyer Instruments A3020 Pressure Switch/Gage 0-20Wc
    Order #: A3020
    Mfg #: A3020
    Availability: Ships in 3-4 weeks
    $668.70
    Pressure Switch/Gage 0-20Wc Learn More
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