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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. Clearance
    Dwyer Instruments VA10420
    Dwyer Instruments VA10420 Variable Area Glass Flowmeter Maximum flow rate 52.3 SCFH
    Order #: VA10420
    Mfg #: VA10420
    Availability: In stock
    Special Price $101.01 Regular Price $257.30
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    Variable Area Glass Flowmeter Maximum flow rate 52.3 SCFH Learn More
  2. 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
    $1,810.50
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    VAT Variable Area Flowmeter Flow rate 40 LPM (10.57 GPM) Learn More
  3. 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
    $2,680.65
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    Gas Mass Flow Meter 0-100 mL/m, stainless steel Learn More
  4. 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
    $220.80
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    Single Channel Leak Det Relay 470 to 10k ohm adj sensitivity Learn More
  5. Clearance
    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
    Special Price $11.61 Regular Price $18.65
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    Replacement Battery for Series STDL-10 Learn More
  6. 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
    Special Price $248.00 Regular Price $964.10
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    Dir readng glass flwmtr, 316 SS float, flow rate 3.8 SCFH air. Learn More
  7. 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
    $731.80
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    Sight Flow Indicator, 3/4" body 3.688" L x 2.250" H, brass Learn More
  8. 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
    $294.55
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    Sight Flow Indicator, 1/2" body 4.063" L x 2.750" D x 2.563" H Learn More
  9. 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
    $126.85
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    Brass Solenoid Valve 1/2",0.5-8 bar,nbr seal, 24 VDC Learn More
  10. Clearance
    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
    Special Price $643.23 Regular Price $1,872.00
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    Rate-Master Dial-Type Flowmeter 0-10 GPM water, 1" female NPT Learn More
  11. Dwyer VFA-3-SS
    Dwyer Instruments VFA-3-SS Series VF Visi-Float Flowmeter Range .6-5 SCFH air
    Order #: VFA-3-SS
    Mfg #: VFA-3-SS
    Availability: Please contact Transcat Customer Service for availability.
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    Series VF Visi-Float Flowmeter Range .6-5 SCFH air Learn More
  12. 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
    Special Price $376.42 Regular Price $2,096.00
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    Gas/Differential Pressure Sw. man. reset, SPST NC, 0.5-5 psig Learn More
  13. Dwyer Instruments 1950
    Dwyer Instruments 1950 Differential Pressure Switch 24VDC,.4-1.6"H2O
    Order #: 1950G-1-B-24-NA
    Mfg #: 1950G-1-B-24-NA
    Availability: In stock
    $564.60
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    Differential Pressure Switch 24VDC,.4-1.6"H2O Learn More
  14. 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
    $63.05
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    Pipe-Mount Bimetal Surface Thermom.,70-500F,1"-1-5/8" pipe Learn More
  15. 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
    Special Price $5.15 Regular Price $9.45
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    Stainless Steel Fitting tee, 1/4" FNPT Learn More
  16. Dwyer Instruments SGY-D11222N-GF
    Dwyer Instruments SGY-D11222N-GF SS Industrial Pressure Gauge 2.5",1/4"npt,1000psi,bott.,glyc
    Order #: SGY-D11222N-GF
    Mfg #: SGY-D11222N-GF
    Availability: Please contact Transcat Customer Service for availability.
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    SS Industrial Pressure Gauge 2.5",1/4"npt,1000psi,bott.,glyc Learn More
  17. Clearance
    Dwyer Instruments OP-E-2
    Dwyer Instruments OP-E-2 1.5"Orifice Plate Flowmeter 100"H2O
    Order #: OP-E-2
    Mfg #: OP-E-2
    Availability: In stock
    Special Price $268.57 Regular Price $505.40
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    1.5"Orifice Plate Flowmeter 100"H2O Learn More
  18. Dwyer Instruments LCI408-00
    Dwyer Instruments LCI408-00 LCI408 Panel Meter Indicator 1/8 DIN, universal input
    Order #: LCI408-00
    Mfg #: LCI408-00
    Availability: In stock
    $1,029.15
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    LCI408 Panel Meter Indicator 1/8 DIN, universal input Learn More
  19. Dwyer Instruments 16L2033
    Dwyer Instruments 16L2033 Ser. 16L Temp/Proc Lim. Control N.O Relay output A & B
    Order #: 16L2033
    Mfg #: 16L2033
    Availability: In stock
    $499.55
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    Ser. 16L Temp/Proc Lim. Control N.O Relay output A & B Learn More
  20. Clearance
    Dwyer Instruments 8904
    Dwyer Instruments 8904 Integral Vane Thermo-Anemometer
    Order #: 8904
    Mfg #: 8904
    Availability: In stock
    Special Price $75.39 Regular Price $157.75
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    Integral Vane Thermo-Anemometer Learn More
  21. Dwyer Instruments DPG-110
    Dwyer Instruments DPG-110 Digitl.Press.Gage,3000PSI,0.25% FS,316L SS,1/4"NPTM
    Order #: DPG-110
    Mfg #: DPG-110
    Availability: In stock
    $348.00
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    Digitl.Press.Gage,3000PSI,0.25% FS,316L SS,1/4"NPTM Learn More
  22. Dwyer Instruments DPG-104
    Dwyer Instruments DPG-104 Dig.Press.Gage,50.00PSI,0.25%FS (3.515kg/cm?,3.448 bar,101.8"H
    Order #: DPG-104
    Mfg #: DPG-104
    Availability: In stock
    $348.00
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    Dig.Press.Gage,50.00PSI,0.25%FS (3.515kg/cm?,3.448 bar,101.8"H Learn More
  23. 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
    $348.00
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    Dig.Press.Gage,15.PSI,1/4"NPTM, 3",316L SS,0.25%FS Learn More
  24. 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
    $355.55
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    EP Differential Pressure Switch 3/11"WC,UL/FM/CSA,SPDT Learn More
  25. Dwyer Instruments 1950
    Dwyer Instruments 1950 EP/WP Diff.Press.Switch .4" to 1.6"WC
    Order #: 1950-1-2F
    Mfg #: 1950-1-2F
    Availability: In stock
    $355.55
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    EP/WP Diff.Press.Switch .4" to 1.6"WC Learn More
Showing 1-25 of 3872
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