US 
CAN - en Flow Switches
We offer highly reliable flow switches that have been engineered to specifically monitor the presence or absence of liquid, gas, or air flow in a system. Our liquid flow switches are available in vane-operated, piston, and mechanically actuated designs. We have the instruments to protect pumps, motors and equipment from the effects of low or no flow conditions. Our compact flow switch models come in piston designs to deliver proven performance in air and pure water applications. Vane flow switches are available at Transcat with field adjustability, providing count-on protection against flow variation or the stoppage of fluids, gases and flowing solids. You’ll also find brass flow switches designed to manage high inline pressure. Our switch selection includes explosion-proof products from Dwyer Instruments that have proven their worth in pipelines.
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Dwyer Instruments V6EPB Flotect Mini-Size Flow Switch Brass upper and lower bodyOrder #: V6EPB-B-D-4-B Mfg #: V6EPB-B-D-4-B Availability: In stock $427.00Flotect Mini-Size Flow Switch Brass upper and lower body Learn More -
Dwyer Instruments V6EPB-B-S-1-B Flotect Mini-Size Flow Switch Brass upper and lower body
Order #: V6EPB-B-S-1-B Mfg #: V6EPB-B-S-1-B Availability: Ships in 3-4 weeks $266.00Flotect Mini-Size Flow Switch Brass upper and lower body Learn More -
Kobold Instruments LPS-1100P Air Flow Switch
Order #: LPS-1100P Mfg #: LPS-1100P Availability: Ships in 3-4 weeks Special Price $138.70 Regular Price $146.00Air Flow Switch Learn More -
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Dwyer Instruments V4 Vane Operated Flow Switch,Brass Universal Vane,Vert.Up-flow
Order #: V4-2-U-V Mfg #: V4-2-U-V Availability: Ships in 3-4 weeks $510.00Vane Operated Flow Switch,Brass Universal Vane,Vert.Up-flow Learn More -
Dwyer Instruments AFS-252 Flw swtch, gases, 1/2" NPT cond conn, brss pstn, brss hsng
Order #: AFS-252 Mfg #: AFS-252 Availability: Ships in 3-4 weeks $1,404.00Flw swtch, gases, 1/2" NPT cond conn, brss pstn, brss hsng Learn More -
Dwyer Instruments AFS-251 Flw swtch, gases, 18 AWG, 24" polymeri, brss pstn brss hsng
Order #: AFS-251 Mfg #: AFS-251 Availability: Ships in 3-4 weeks $1,350.00Flw swtch, gases, 18 AWG, 24" polymeri, brss pstn brss hsng Learn More -
Dwyer Instruments AFS-232 Adjustable Flow Switch for Gases,1/2"NPT Conduit Conn.
Order #: AFS-232 Mfg #: AFS-232 Availability: Ships in 3-4 weeks $942.00Adjustable Flow Switch for Gases,1/2"NPT Conduit Conn. Learn More -
Dwyer Instruments AFS-231 Flw swtch, gases, 18 AWG, 24" polymeri, brss pstn, brss hsng
Order #: AFS-231 Mfg #: AFS-231 Availability: Ships in 3-4 weeks $877.00Flw swtch, gases, 18 AWG, 24" polymeri, brss pstn, brss hsng Learn More -
Dwyer Instruments AFS-152 Flw swch, liq, 1/2" NPT cond conn, brss pstn, brss hsng
Order #: AFS-152 Mfg #: AFS-152 Availability: Ships in 3-4 weeks $1,404.00Flw swch, liq, 1/2" NPT cond conn, brss pstn, brss hsng Learn More -
Dwyer Instruments AFS-151 Flw swtch, liq, 18 AWG, 24" polymer, brss pstn, brss hsng
Order #: AFS-151 Mfg #: AFS-151 Availability: Ships in 3-4 weeks $1,356.00Flw swtch, liq, 18 AWG, 24" polymer, brss pstn, brss hsng Learn More -
Dwyer Instruments AFS-142 Flw swch, wtr, 1/2" NPT cond conn, polysulf pstn, brss hsng
Order #: AFS-142 Mfg #: AFS-142 Availability: Ships in 3-4 weeks $942.00Flw swch, wtr, 1/2" NPT cond conn, polysulf pstn, brss hsng Learn More -
Dwyer Instruments AFS-141 Flw swch, wtr, 18 AWG, 24" poly lead, polysulf pist, brss hsng
Order #: AFS-141 Mfg #: AFS-141 Availability: Ships in 3-4 weeks $713.00Flw swch, wtr, 18 AWG, 24" poly lead, polysulf pist, brss hsng Learn More -
Dwyer Instruments AFS-132 Flw swtch, oil, 1/2" NPT cond conn, brss pstn, brss hsng
Order #: AFS-132 Mfg #: AFS-132 Availability: Ships in 3-4 weeks $942.00Flw swtch, oil, 1/2" NPT cond conn, brss pstn, brss hsng Learn More -
Dwyer Instruments AFS-131 Flw swch, oil, 18 AWG, 24" poly lead, brss pstn, brss hsng
Order #: AFS-131 Mfg #: AFS-131 Availability: Ships in 3-4 weeks $877.00Flw swch, oil, 18 AWG, 24" poly lead, brss pstn, brss hsng Learn More -
Dwyer Instruments TDS222 Thermal Dispersion Flow Switch PVDF wetted parts, 4.5" length
Order #: TDS222 Mfg #: TDS222 Availability: Ships in 3-4 weeks $588.00Thermal Dispersion Flow Switch PVDF wetted parts, 4.5" length Learn More -
Dwyer Instruments TDS212 Thermal Dispersion Flow Switch PVDF wetted parts, 3.0" length
Order #: TDS212 Mfg #: TDS212 Availability: Ships in 3-4 weeks $666.00Thermal Dispersion Flow Switch PVDF wetted parts, 3.0" length Learn More -
Dwyer Instruments TDS122 Thermal Dispersion Flow Switch PP/PPS wetted parts 4.5" length
Order #: TDS122 Mfg #: TDS122 Availability: Ships in 3-4 weeks $441.00Thermal Dispersion Flow Switch PP/PPS wetted parts 4.5" length Learn More -
Dwyer Instruments TDS112 Thermal Dispersion Flow Switch PP/PPS wetted parts 3.0" length
Order #: TDS112 Mfg #: TDS112 Availability: Ships in 3-4 weeks $420.00Thermal Dispersion Flow Switch PP/PPS wetted parts 3.0" length Learn More -
Dwyer Instruments G9-23 Globe Flow Switch actuation set point 7.0-14 GPM
Order #: G9-23 Mfg #: G9-23 Availability: Ships in 3-4 weeks $746.00Globe Flow Switch actuation set point 7.0-14 GPM Learn More -
Dwyer Instruments G9-22 Globe Flow Switch actuation set point 2.0-8 GPM
Order #: G9-22 Mfg #: G9-22 Availability: Ships in 3-4 weeks $746.00Globe Flow Switch actuation set point 2.0-8 GPM Learn More -
Dwyer Instruments GVS-113 Series GVS Globe Valve Switch Actuation set pt 2.0-8.0 GPM
Order #: GVS-113 Mfg #: GVS-113 Availability: Ships in 3-4 weeks $471.00Series GVS Globe Valve Switch Actuation set pt 2.0-8.0 GPM Learn More -
Dwyer Instruments GVS-112 Series GVS Globe Valve Switch Actuation set pt 5.0-15.0 GPM
Order #: GVS-112 Mfg #: GVS-112 Availability: Ships in 3-4 weeks $471.00Series GVS Globe Valve Switch Actuation set pt 5.0-15.0 GPM Learn More -
Dwyer Instruments GVS-111 Globe Valve Switch actuation set point 1.0-6.0 GPM
Order #: GVS-111 Mfg #: GVS-111 Availability: Ships in 3-4 weeks $471.00Globe Valve Switch actuation set point 1.0-6.0 GPM Learn More -
Dwyer Instruments FS20700 Flowmeter 1.0 to 7.0 GPM, 3/4" male NPT
Order #: FS20700 Mfg #: FS20700 Availability: Ships in 3-4 weeks $593.00Flowmeter 1.0 to 7.0 GPM, 3/4" male NPT Learn More -
Dwyer Instruments FS20400 Flowmeter 0.5 to 4.0 GPM, 3/4" male NPT
Order #: FS20400 Mfg #: FS20400 Availability: Ships in 3-4 weeks $593.00Flowmeter 0.5 to 4.0 GPM, 3/4" male NPT Learn More
