Dwyer Instruments

The distinguished heritage of Dwyer Instruments is based on quality and reliability. The company stands as a major manufacturer of competitively priced controls and instrumentation for HVAC, chemical, food, oil and gas, and other industries. Dwyer’s popular brands and diversified products include the proven Magnehelic differential pressure gauges, as well as Photohelic pressure switch/gauges and Rate Master flowmeters. Following decades of progress, Dwyer continues to move forward, continually introducing and updating its accurate instruments. Transcat carries an impressive inventory of Dwyer models, including the top of the line series of manometers, digital pressure gauges, differential pressure controllers, flow switches, air velocity meters and more.

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  1. Dwyer Instruments 1950-0-2F
    Dwyer Instruments 1950-0-2F Explosion-Proof Diff.Pressure Switch,.15-.50"wc
    Order #: 1950-0-2F
    Mfg #: 1950-0-2F
    Availability: In stock
    $333.85
    Explosion-Proof Diff.Pressure Switch,.15-.50"wc Learn More
  2. Dwyer Instruments A-396A
    Dwyer Instruments A-396A Calibration Pump (PRESSURE)
    Order #: A-396A
    Mfg #: A-396A
    Availability: In stock
    $492.25
    Calibration Pump (PRESSURE) Learn More
  3. Dwyer Instruments L6EPS-S-S-3-A
    Dwyer Instruments L6EPS-S-S-3-A Flotect Liquid Level Switch SS housing, SPDT, 304SS float
    Order #: L6EPS-S-S-3-A
    Mfg #: L6EPS-S-S-3-A
    Availability: In stock
    $477.35
    Flotect Liquid Level Switch SS housing, SPDT, 304SS float Learn More
  4. Dwyer Instruments 475-0-FM
    Dwyer Instruments 475-0-FM HH Digital Manometer,0-10"H2O
    Order #: 475-0-FM
    Mfg #: 475-0-FM
    Availability: In stock
    $325.50
    HH Digital Manometer,0-10"H2O Learn More
  5. Dwyer Instruments DPG-102
    Dwyer Instruments DPG-102 Dig.Press.Gage,15.PSI,1/4"NPTM, 3",316L SS,0.25%FS
    Order #: DPG-102
    Mfg #: DPG-102
    Availability: In stock
    $313.05
    Dig.Press.Gage,15.PSI,1/4"NPTM, 3",316L SS,0.25%FS Learn More
  6. Dwyer Instruments 2000-1KPA
    Dwyer Instruments 2000-1KPA Magnehelic Differential Press. Gage,0-1kPa
    Order #: 2000-1KPA
    Mfg #: 2000-1KPA
    Availability: In stock
    $75.35
    Magnehelic Differential Press. Gage,0-1kPa Learn More
  7. Dwyer Instruments A-183
    Dwyer Instruments A-183 Protective Gage Boot/DPG Series Gage
    Order #: A-183
    Mfg #: A-183
    Availability: In stock
    $13.40
    Protective Gage Boot/DPG Series Gage Learn More
  8. Clearance
    Dwyer Instruments VA10420
    Dwyer Instruments VA10420 Variable Area Glass Flowmeter Maximum flow rate 52.3 SCFH
    Order #: VA10420
    Mfg #: VA10420
    Availability: In stock
    $227.00
    Variable Area Glass Flowmeter Maximum flow rate 52.3 SCFH Learn More
  9. Clearance
    Dwyer Instruments VAT-6110
    Dwyer Instruments VAT-6110 VAT Variable Area Flowmeter Flow rate 13 LPM (3.43 GPM)
    Order #: VAT-6110
    Mfg #: VAT-6110
    Availability: In stock
    Special Price $913.13 Regular Price $2,232.00
    VAT Variable Area Flowmeter Flow rate 13 LPM (3.43 GPM) Learn More
  10. Dwyer Instruments VAT-6013
    Dwyer Instruments VAT-6013 VAT Variable Area Flowmeter Flow rate 40 LPM (10.57 GPM)
    Order #: VAT-6013
    Mfg #: VAT-6013
    Availability: In stock
    $1,678.75
    VAT Variable Area Flowmeter Flow rate 40 LPM (10.57 GPM) Learn More
  11. Dwyer Instruments GFM-2104
    Dwyer Instruments GFM-2104 Gas Mass Flow Meter 0-100 mL/m, stainless steel
    Order #: GFM-2104
    Mfg #: GFM-2104
    Availability: In stock
    $2,485.60
    Gas Mass Flow Meter 0-100 mL/m, stainless steel Learn More
  12. Dwyer Instruments SLD-ACY
    Dwyer Instruments SLD-ACY Single Channel Leak Det Relay 470 to 10k ohm adj sensitivity
    Order #: SLD-ACY
    Mfg #: SLD-ACY
    Availability: In stock
    $204.95
    Single Channel Leak Det Relay 470 to 10k ohm adj sensitivity Learn More
  13. New
    MadgeTech ER14250 3.6V Lithium 1000 mAH Pressure Contact for MicroTemp
    Dwyer Instruments ER14250 Replacement Battery for Series STDL-10
    Order #: ER14250
    Mfg #: ER14250
    Availability: In stock
    $15.50
    Replacement Battery for Series STDL-10 Learn More
  14. Clearance
    Dwyer Instruments DR224182
    Dwyer Instruments DR224182 Dir readng glass flwmtr, 316 SS float, flow rate 3.8 SCFH air.
    Order #: DR224182
    Mfg #: DR224182
    Availability: In stock
    $875.00
    Dir readng glass flwmtr, 316 SS float, flow rate 3.8 SCFH air. Learn More
  15. Dwyer Instruments SFI-700-3/4
    Dwyer Instruments SFI-700-3/4 Sight Flow Indicator, 3/4" body 3.688" L x 2.250" H, brass
    Order #: SFI-700-3/4
    Mfg #: SFI-700-3/4
    Availability: In stock
    $687.45
    Sight Flow Indicator, 3/4" body 3.688" L x 2.250" H, brass Learn More
  16. Dwyer Instruments SFI-300-1/2
    Dwyer Instruments SFI-300-1/2 Sight Flow Indicator, 1/2" body 4.063" L x 2.750" D x 2.563" H
    Order #: SFI-300-1/2
    Mfg #: SFI-300-1/2
    Availability: In stock
    $276.65
    Sight Flow Indicator, 1/2" body 4.063" L x 2.750" D x 2.563" H Learn More
  17. Dwyer Instruments SSV-B4N4
    Dwyer Instruments SSV-B4N4 Brass Solenoid Valve 1/2",0.5-8 bar,nbr seal, 24 VDC
    Order #: SSV-B4N4
    Mfg #: SSV-B4N4
    Availability: In stock
    $119.00
    Brass Solenoid Valve 1/2",0.5-8 bar,nbr seal, 24 VDC Learn More
  18. Dwyer Instruments V6EPB-B-D-4-B
    Dwyer Instruments V6EPB Flotect Mini-Size Flow Switch Brass upper and lower body
    Order #: V6EPB-B-D-4-B
    Mfg #: V6EPB-B-D-4-B
    Availability: In stock
    $467.45
    Flotect Mini-Size Flow Switch Brass upper and lower body Learn More
  19. Dwyer Instruments RMV-2-3
    Dwyer Instruments RMV-2-3 Rate-Master Dial-Type Flowmeter 0-10 GPM water, 1" female NPT
    Order #: RMV-2-3
    Mfg #: RMV-2-3
    Availability: In stock
    $1,872.00
    Rate-Master Dial-Type Flowmeter 0-10 GPM water, 1" female NPT Learn More
  20. Dwyer Instruments DA-41-153-9E
    Dwyer Instruments DA-41-153-9E Bourdon Tube Pressure Switch 316SS tube, range 10-300 psig
    Order #: DA-41-153-9E
    Mfg #: DA-41-153-9E
    Availability: In stock
    $1,449.75
    Bourdon Tube Pressure Switch 316SS tube, range 10-300 psig Learn More
  21. Clearance
    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
  22. Clearance
    Dwyer Instruments BCHP-1
    Dwyer Instruments BCHP-1 Low Pressure Calibration Pump Calibration Test Pump
    Order #: BCHP-1
    Mfg #: BCHP-1
    Availability: In stock
    $1,197.00
    Low Pressure Calibration Pump Calibration Test Pump Learn More
  23. Clearance
    Dwyer Instruments A-525
    Dwyer Instruments A-525 Pocket Type Sling Psychrometer
    Order #: A-525
    Mfg #: A-525
    Availability: In stock
    $230.00
    Pocket Type Sling Psychrometer Learn More
  24. Dwyer Instruments STC371
    Dwyer Instruments STC371 Pipe-Mount Bimetal Surface Thermom.,70-500F,1"-1-5/8" pipe
    Order #: STC371
    Mfg #: STC371
    Availability: In stock
    $57.00
    Pipe-Mount Bimetal Surface Thermom.,70-500F,1"-1-5/8" pipe Learn More
  25. Clearance
    Dwyer Instruments A-2026-2
    Dwyer Instruments A-2026-2 Stainless Steel Fitting tee, 1/4" FNPT
    Order #: A-2026-2
    Mfg #: A-2026-2
    Availability: In stock
    $8.50
    Stainless Steel Fitting tee, 1/4" FNPT Learn More
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