Omega V4 Data Sheet

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Series V4

W.E. Anderson Flotect® Vane Operated Flow Switch

Features/Benets

• Unique magnetically actuated switching design gives superior performance

• Features a free-swinging vane which attracts a magnet within the solid metal switch body, actuating a snap switch by means of a simple lever arm with no bellows, springs, or seals to fail

• Leak proof body machined from bar stock

• Electrical assembly can be easily replaced without removing the unit from installation so that the process does not have to be shut down

• Installs directly and easily into pipeline with

a thredolet, tee, or ange (see application

drawings)

• High pressure rating of 1000 psig (69 bar) with

the brass body and 2000 psig (138 bar) with the 316 SS body

• Choice of custom vane calibrated for your

application, Model V4, or eld adjustable multilayer vane, Model V4-2-U (see set point

chart)

Applications

• Protects pumps, motors and other equipment against low or no ow

• Controls sequential operation of pumps

• Automatically starts auxiliary pumps and engines

• Stops liquid cooled engines, machines and

processing when coolant ow is interrupted

• Shuts down burner when air ow through heating coil fails

• Controls dampers according to ow

Description

The Series V4 Flotect® Vane Operated Flow Switch is rugged and reliable, ideal for automatically protecting equipment and pipeline systems against

damage from reduction or loss of ow. 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 specications). This series can be used in pipes 1-1/2 ˝ and up.

Specications

Service

Wetted

Materials

Gases or liquids compatible with 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

Switch Type

Connections

Connection

Limit

Pressure

Limit

Enclosure

Rating

Electrical

Rating

Electrical

Conduit

Standard: -4 °F to 275 °F (-20 °C to 135

°C). MT high temperature [not UL, CSA,

Ambient

Process

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.

Weatherproof and Explosion-proof. **Listed

with UL and CSA for Class I, Groups C and D; Class II, Groups E, F, and G. ATEX 2813 II 2 G Ex db IIB T6 Gb -4 °F < Tambs < 163 °F. -4 °F < Process Temp < 163 °F. EU-Type Certicate No.: KEMA 03ATEX2383. ATEX Standards: EN 60079-0:2012+A11:2013; EN 60079-1:2014. IECEx Certied: For Ex db IIB T6 Gb -4 °F < Tamb < 163 °F . -4 °F < Process Temp < 163 °F. IECEx Certicate of Conformity: IECEx DEK 11.0071. IECEx Standards: IEC 60079-0:2011; IEC 60079-

1:2014. Zone I. Also FM approved.

SPDT snap switch standard, DPDT snap switch

optional. UL, FM, ATEX and IECEx models 10 A @ 125/250

VAC (V~). CSA models: 5 A @ 125/250 VAC (V~); 5 A res., 3 A ind. @ 30 VDC (V @125 VAC (V~); 1 A res., .5 A ind. @ 30 VDC (V ). MT option: 5 A @ 125/250 VAC (V~). [MT and MV

option not UL, CSA, FM, ATEX or IECEx].

UL and CSA models: 16 AWG, 6 ˝ (152 mm) long.

ATEX and IECEx unit: Terminal block.

3/4 ˝ female NPT standard or M25 with -BSPT

option.

ATEX, or IECEx]: -4 °F to 400 °F (-20 °C

to 205 °C).

ATEX and IECEx: -4 °F to 163 °F (-20 °C to 73 °C).

All options: -4 °F to 163 °F (-20 °C to 73

°C). Note: ATEX and IECEx units only: The

temperature class is determined by the maximum ambient and or process temperature. Units are intended to be used in ambient of -4 °F < T

163 °F. Units may be used in proves

temperatures up to 271 °F providing the enclosure and switch body temperature

do not exceed 163 °F. The standard temperature class is T6 process temp

< 163 °F

). MV option: 1 A

ambs

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3-11/32

COVER REMOV

SIZES.

Process

Connection

Mounting

Orientation

1-1/2 ˝ male NPT or 1-1/2 ˝ male BSPT.

Within 5° of vertical for proper operation. Units for

horizontal installation (vertical pipe with up ow)

available.

Set Point

Adjustment

Weight

Compliance

For universal vane: ve vane combinations.

4 lb 8 oz (1.9 kg).

ATEX, CE, CSA, FM, IECEx, UL**.

**No housing option (-NH) has no approvals.

Dimensions and Wiring Diagram

1-5/8 [41.28]

CLEARANCE FOR

6-3/4

[171.45]

[203.20]

4-11/16 [119.06]

[25.40]

[84.93]

2-23/32

[69.06]

UL AND CSA TYPE INCLUDES 16 GA LEADS, 6 [152.4] LONG. ATEX VERSION INCLUDES TERMINAL BLOCK

EXPLOSION-PROOF HOUSING WITH 3/4 FEMALE NPT OR M2 CONDUIT CONNECTION

SWITCH BODY, SAE 72 BRASS OR 316 STAINLESS STEEL

1-1/2 MALE NPT/BSPT PROCESS CONNECTION MAGNET KEEPER, 430 STAINLESS STEEL

VANE BLOCK, 316 STAINLESS STEEL

FIVE LAYER VANE 316 STAINLESS STEEL DESIGNED FOR 1-1/2˝ TO 8˝ PIPES USABLE IN LARGER PIPE

Ordering Guide

Use the bold characters from the chart below to construct a product code.

V4 -2 -U -NH -D

SERIES V4: Flotect® vane operated ow switch

BODY

-2: Short style brass body

-SS: 316 SS (with 430 SS magnet keeper)

VANE

-U: Universal

BLANK: Custom

HOUSING BLANK: With housing

-NH: No housing (has no approvals)

Important Notice: Dwyer Instruments, LLC reserves the right to make changes to or discontinue any product or service identied in this publication without notice. Dwyer advises its

customers to obtain the latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.

OPTIONS

-D: DPDT contacts

-MV: Gold plated contacts, options for dry

circuits*

-MT: High temperature, option rated 400°F

(204°C)*

-TRI: Increasing ow time delay relay option with 2 SPDT contacts, adjustable from 0-1 to 0-31 minutes*

-TRD: Decreasing ow time delay relay option with 2 SPDT contacts, adjustable from 0-1 to 0-31 minutes*

-316: 316 SS magnet keeper, option to replace standard 430 SS

-V: Vertical up ow, option for upward ow in

vertical pipe

- AT: ATEX compliant construction

-IEC: IECEx certied construction

-BSPT: Male BSPT process connection and

M25 conduit connection

*See electrical rating in specication, no

listings or approvals.

Improving the world, one measurement at a time.