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V4-2-U | Vane operated flow switch | brass body | universal vane. | Dwyer

Vane operated flow switch, brass body, universal vane.

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Dwyer V4-2-U Documents

V4 Time Delay Relay Instruction Manual (English)Instruction Manual (Multilingual)Series V4 Catalog Page V4 More Info

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Vane operated flow switch | brass body | universal vane.

SERIES V4 FLOTECT® VANE-OPERATED FLOW SWITCH

Field Adjustable – Dependable Protection Against Flow Variation or Stopping in Pipelines for Fluids, Gases and Flowing Solids

The Series V4 Flotect® Flow Switches are rugged and reliable, ideal for automatically protecting equipment and pipeline systems against damage from reduction or loss of flow. Time tested in thousands of pipeline installations and processing plants around the world this Series is Weatherproof, designed to meet NEMA 4 and Explosion-proof (listing included in specifications). This series can be used in pipes 1-1/2" (38.10 mm) and up.

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Product 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

Superior performance with unique magnetically-actuated switching design
Increased product life due to free-swinging vane, which attracts a magnet within the solid metal switch body and actuates a snap switch by means of a simple lever arm with no bellows, springs, or seals to fail
Meets application requirements with durable leak-proof body machined from bar stock
Save time and money on maintenance with electrical assembly that can be easily replaced without removing the unit from installation so that the process does not have to be shut down
Quick installation with fitting that installs directly and easily into pipeline with a threadolet, tee, or flange (see application drawings)
Meets the most demanding applications with high pressure rating of 1000 psig (69 bar) for the brass body and 2000 psig (138 bar) for the SS body
Solves customer flow application needs with choice of custom vane calibrated specifically for your application, Model V4, or field adjustable multilayer vane, Model V4-2-U (see set point chart)

Specifications

Series: V4 FLOTECT® VANE-OPERATED FLOW SWITCH
Category/Type: Flow
Type: Flow Switches
Series: V4 FLOTECT® VANE-OPERATED FLOW SWITCH
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; Options: Other materials also available; consult factory (e.g. PVC; Hastelloy; Nickel; Monel; Titanium).
Temperature Limit: -4 to 275°F (-20 to 135°C) standard; MT high temperature option 400°F (205°C) [MT option not UL; CSA; ATEX or IECEx] ATEX and IECEx options; ambient temperature -4 to 163°F (-20 to 73°C); Process temperature -4 to 163°F (-20 to 73°C).
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 andExplosion-proof. **Listed with UL andCSA for Class I; Groups C and D;Class II; Groups E; F; and G.ATEX CE 2813 EX II 2 G Ex db IB T6Gb -20°C≤Tamb≤73°C.-20°C≤Process Temp≤73°C.EU-Type Certificate No.: KEMA 03ATEX 2383.ATEX Standards: EN 60079-0:2012+A11:2013;EN 60079-1:2014. IECEx Certified: For Ex db IB T6 Gb -20°C≤Tamb≤73°C. -20°C≤ProcessTemp≤73°C.IECEx Certificate of Conformity: IECExDEK 11.0071.IECEx Standards: IEC 60079-0: 2011;IEC 60079-1: 2014.Zone I. Also FM approved.
Switch Type: SPDT snap switch standard; DPDT snap switch optional.
Electrical Rating: UL; FM; ATEX and IECEx models 10 A @ 125/250 VAC. CSA models: 5 A @ 125/250 VAC; 5 A res.; 3 A ind. @ 30 VDC . MV option: 1 A @125 VAC; 1 A res.; .5 A ind. @ 30 VDC. MT option: 5 A @ 125/250 VAC. [MT and MV option not UL; CSA; FM or ATEX or IECEx].
Electrical Connections: UL and CSA models: 16 AWG; 6" (152 mm) long. ATEX and IECEx unit: Terminal block.
Conduit Connection: 3/4" female NPT or 19.05 mm standard or M25 with -BSPT option.
Process Connection: 1-1/2" male NPT or 1-1/2" male BSPT or 38.10 mm.
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).
Agency Approvals: ATEX; CE; CSA; FM; IECEx; UL**.
: **No housing option (-NH) has no approvals