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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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Dwyer Instruments VA10420 Variable Area Glass Flowmeter Maximum flow rate 52.3 SCFHOrder #: VA10420 Mfg #: VA10420 Availability: In stock Special Price $101.01 Regular Price $227.00Variable Area Glass Flowmeter Maximum flow rate 52.3 SCFH Learn More -
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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 $2,232.00VAT Variable Area Flowmeter Flow rate 13 LPM (3.43 GPM) Learn More -
Dwyer Instruments VAT-6013 VAT Variable Area Flowmeter Flow rate 40 LPM (10.57 GPM)
Order #: VAT-6013 Mfg #: VAT-6013 Availability: In stock $1,678.75VAT Variable Area Flowmeter Flow rate 40 LPM (10.57 GPM) Learn More -
Dwyer Instruments GFM-2104 Gas Mass Flow Meter 0-100 mL/m, stainless steel
Order #: GFM-2104 Mfg #: GFM-2104 Availability: In stock $2,485.60Gas Mass Flow Meter 0-100 mL/m, stainless steel Learn More -
Dwyer Instruments SLD-ACY Single Channel Leak Det Relay 470 to 10k ohm adj sensitivity
Order #: SLD-ACY Mfg #: SLD-ACY Availability: In stock $204.95Single Channel Leak Det Relay 470 to 10k ohm adj sensitivity Learn More -
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Dwyer Instruments ER14250 Replacement Battery for Series STDL-10
Order #: ER14250 Mfg #: ER14250 Availability: In stock $15.50Replacement Battery for Series STDL-10 Learn More -
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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 $875.00Dir readng glass flwmtr, 316 SS float, flow rate 3.8 SCFH air. Learn More -
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 $687.45Sight Flow Indicator, 3/4" body 3.688" L x 2.250" H, brass Learn More -
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 $276.65Sight Flow Indicator, 1/2" body 4.063" L x 2.750" D x 2.563" H Learn More -
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 $119.00Brass Solenoid Valve 1/2",0.5-8 bar,nbr seal, 24 VDC Learn More -
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 $467.45Flotect Mini-Size Flow Switch Brass upper and lower body Learn More -
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 $1,872.00Rate-Master Dial-Type Flowmeter 0-10 GPM water, 1" female NPT Learn More -
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 $1,449.75Bourdon Tube Pressure Switch 316SS tube, range 10-300 psig Learn More -
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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 $910.00Gas/Differential Pressure Sw. man. reset, SPST NC, 0.5-5 psig Learn More -
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 $530.40Differential Pressure Switch 24VDC,.4-1.6"H2O Learn More -
Dwyer Instruments STC371 Pipe-Mount Bimetal Surface Thermom.,70-500F,1"-1-5/8" pipe
Order #: STC371 Mfg #: STC371 Availability: In stock $57.00Pipe-Mount Bimetal Surface Thermom.,70-500F,1"-1-5/8" pipe Learn More -
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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 $8.50Stainless Steel Fitting tee, 1/4" FNPT Learn More -
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: In stock $33.50SS Industrial Pressure Gauge 2.5",1/4"npt,1000psi,bott.,glyc Learn More -
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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 $457.001.5"Orifice Plate Flowmeter 100"H2O Learn More -
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Dwyer Instruments 3100D-4-FM-1-1 3100D Smart Differ. Pressure Transmitter, RNG 0-750 in H2O
Order #: 3100D-4-FM-1-1 Mfg #: 3100D-4-FM-1-1 Availability: In stock Special Price $755.55 Regular Price $1,408.003100D Smart Differ. Pressure Transmitter, RNG 0-750 in H2O Learn More -
Dwyer Instruments LCI408-00 LCI408 Panel Meter Indicator 1/8 DIN, universal input
Order #: LCI408-00 Mfg #: LCI408-00 Availability: In stock $966.70LCI408 Panel Meter Indicator 1/8 DIN, universal input Learn More -
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Dwyer Instruments 8904 Integral Vane Thermo-Anemometer
Order #: 8904 Mfg #: 8904 Availability: In stock Special Price $75.39 Regular Price $138.00Integral Vane Thermo-Anemometer Learn More -
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 $313.05Dig.Press.Gage,50.00PSI,0.25%FS (3.515kg/cm?,3.448 bar,101.8"H Learn More -
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 $333.85EP Differential Pressure Switch 3/11"WC,UL/FM/CSA,SPDT Learn More -
Dwyer Instruments 1950 EP/WP Diff.Press.Switch .4" to 1.6"WC
Order #: 1950-1-2F Mfg #: 1950-1-2F Availability: In stock $333.85EP/WP Diff.Press.Switch .4" to 1.6"WC Learn More
