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Dwyer V4 Series Flotect Vane-Operated Flow Switches

Dwyer V4 Series Flotect Vane-Operated Flow Switches

Model Selection

Dwyer V4-SS-2-U W.E. Anderson Flotect Flow Switch, Universal Vane, 316SS Body
V4-SS-2-U $918.92 USD
Was: $982.80
Availability:
1 in Stock
Dwyer V4-2-MT-U Flow Switch, Universal Vane, Brass 400°F (204°C)
V4-2-MT-U $685.59 USD
Was: $733.25
Availability:
3 to 4 Weeks
Dwyer V4-2-U Flow Switch, Universal Vane, Brass
V4-2-U $661.23 USD
Was: $707.20
Availability:
1 Week
Dwyer V4-2-D-U Flow Switch, Universal Vane, Brass DPDT
V4-2-D-U $652.40 USD
Was: $697.75
Availability:
5 Days
Dwyer V4-SS-2-D-U Flow Switch, Universal Vane, 316SS DPDT
V4-SS-2-D-U $981.14 USD
Was: $1,049.35
Availability:
2 to 3 Weeks

Tested being installed in thousands of pipelines and processing plants around the world. A magnetically actuated switching design gives superior performance. There are no bellows, springs, or seals to fail. Instead, a free-swinging vane attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm.

Tested being installed in thousands of pipelines and processing plants around the world. A magnetically actuated switching design gives superior performance. There are no bellows, springs, or seals to fail. Instead, a free-swinging vane attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm.

Dwyer V4-SS-2-U W.E. Anderson Flotect Flow Switch, Universal Vane, 316SS Body
V4-SS-2-U $918.92 USD
Was: $982.80
Availability:
1 in Stock
Dwyer V4-2-MT-U Flow Switch, Universal Vane, Brass 400°F (204°C)
V4-2-MT-U $685.59 USD
Was: $733.25
Availability:
3 to 4 Weeks
Dwyer V4-2-U Flow Switch, Universal Vane, Brass
V4-2-U $661.23 USD
Was: $707.20
Availability:
1 Week
Dwyer V4-2-D-U Flow Switch, Universal Vane, Brass DPDT
V4-2-D-U $652.40 USD
Was: $697.75
Availability:
5 Days
Dwyer V4-SS-2-D-U Flow Switch, Universal Vane, 316SS DPDT
V4-SS-2-D-U $981.14 USD
Was: $1,049.35
Availability:
2 to 3 Weeks

Dwyer V4 Series Offers

Features

  • Explosion-proof
  • Installs directly and easily into pipeline with a threaded branch connection, tee, or flange
  • Can be used in pipes 1-1/2" and up
  • Electrical assembly can be easily replaced without removing the unit from installation so that the process does not have to be shut down
  • High pressure rating of 1000 psig (69 bar) with the brass body and 2000 psig (138 bar) with the 316 SS body
  • Unique magnetically actuated switching design gives superior performance
  • There are no bellows, springs, or seals to fail
  • Instead, a free-swinging vane attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm
Applications
  • Protects pumps, motors and other equipment against low or no flow
  • Controls sequential operation of pumps
  • Automatically starts auxiliary pumps and engines
  • Stops liquid cooled engines, machines and processing when coolant flow is interrupted
  • Shuts down burner when air flow through heating coil fails
  • Controls dampers according to flow

Dwyer V4 Series Specifications

Service Gases or liquids compatible with wetted materials
Wetted Materials Vane: 316 SS
Body Brass or 316 SS standard
Magnet Keeper 430 SS standard, 316 SS optional
Temperature Limit -4 to 275°F (-20 to 135°C) standard, MT high temperature option 400°F (205°C) [MT option not UL, CSA or ATEX]
Pressure Limit Brass body 1000 psig (69 bar), 316 SS body 2000 psig (138 bar), optional 5000 psig (345 bar) available with 316 SS body and SPDT switch only
Enclosure Rating Weatherproof [meets NEMA 4 (IP65)] and Explosion-proof. Listed with UL and CSA for Class I, Groups C and D; Class II, Groups E, F, and G. ATEX CE 0344 EX II 2 G EEx d IIB T6 -20°C≤Tamb≤75°C, EC-Type Certificate No.: KEMA 03ATEX 2383. Also FM approved
Switch Type SPDT snap switch standard, DPDT snap switch optional
Electrical Rating UL, FM ATEX and SAA models 10A @ 125/250 VAC. CSA models: 5A @ 125/250 VAC; 5A res., 3A ind. @ 30 VDC . MV option: 1A @125 VAC; 1A res., .5A ind. @ 30 VDC. MT option: 5A @ 125/250 VAC. [MT and MV option not UL, CSA, FM or ATEX]
Electrical Connections UL and CSA models: 16 AWG, 6" (152 mm) long. ATEX and SAA unit: Terminal block
Conduit Connection 3/4" female NPT
Process Connection 1-1/2" male NPT
Mounting Orientation Within 5° of vertical for proper operation. Units for horizontal installation (vertical pipe with up flow) available
Set Point Adjustment For universal vane: five vane combinations
Weight 4 lb 8 oz (1.9 kg)
Click here for complete specifications on the Dwyer V4 Series

What's included with the Dwyer V4 Series

  • Dwyer V4 Series Flotect Vane-Operated Flow Switches

Ask a question about Dwyer V4 Series Flotect Vane-Operated Flow Switches

Customer Reviews for the Dwyer V4 Series

Dwyer V4 Series Offers

Features

  • Explosion-proof
  • Installs directly and easily into pipeline with a threaded branch connection, tee, or flange
  • Can be used in pipes 1-1/2" and up
  • Electrical assembly can be easily replaced without removing the unit from installation so that the process does not have to be shut down
  • High pressure rating of 1000 psig (69 bar) with the brass body and 2000 psig (138 bar) with the 316 SS body
  • Unique magnetically actuated switching design gives superior performance
  • There are no bellows, springs, or seals to fail
  • Instead, a free-swinging vane attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm
Applications
  • Protects pumps, motors and other equipment against low or no flow
  • Controls sequential operation of pumps
  • Automatically starts auxiliary pumps and engines
  • Stops liquid cooled engines, machines and processing when coolant flow is interrupted
  • Shuts down burner when air flow through heating coil fails
  • Controls dampers according to flow

Dwyer V4 Series Specifications

Service Gases or liquids compatible with wetted materials
Wetted Materials Vane: 316 SS
Body Brass or 316 SS standard
Magnet Keeper 430 SS standard, 316 SS optional
Temperature Limit -4 to 275°F (-20 to 135°C) standard, MT high temperature option 400°F (205°C) [MT option not UL, CSA or ATEX]
Pressure Limit Brass body 1000 psig (69 bar), 316 SS body 2000 psig (138 bar), optional 5000 psig (345 bar) available with 316 SS body and SPDT switch only
Enclosure Rating Weatherproof [meets NEMA 4 (IP65)] and Explosion-proof. Listed with UL and CSA for Class I, Groups C and D; Class II, Groups E, F, and G. ATEX CE 0344 EX II 2 G EEx d IIB T6 -20°C≤Tamb≤75°C, EC-Type Certificate No.: KEMA 03ATEX 2383. Also FM approved
Switch Type SPDT snap switch standard, DPDT snap switch optional
Electrical Rating UL, FM ATEX and SAA models 10A @ 125/250 VAC. CSA models: 5A @ 125/250 VAC; 5A res., 3A ind. @ 30 VDC . MV option: 1A @125 VAC; 1A res., .5A ind. @ 30 VDC. MT option: 5A @ 125/250 VAC. [MT and MV option not UL, CSA, FM or ATEX]
Electrical Connections UL and CSA models: 16 AWG, 6" (152 mm) long. ATEX and SAA unit: Terminal block
Conduit Connection 3/4" female NPT
Process Connection 1-1/2" male NPT
Mounting Orientation Within 5° of vertical for proper operation. Units for horizontal installation (vertical pipe with up flow) available
Set Point Adjustment For universal vane: five vane combinations
Weight 4 lb 8 oz (1.9 kg)
Click here for complete specifications on the Dwyer V4 Series

What's included with the Dwyer V4 Series

  • Dwyer V4 Series Flotect Vane-Operated Flow Switches

Ask a question about Dwyer V4 Series Flotect Vane-Operated Flow Switches

Customer Reviews for the Dwyer V4 Series

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