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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® Vane Operated Flow Switch is 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.

BENEFITS/FEATURES

• 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)

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

3-11/32

[84.93]

2-23/32

[69.06]

UL AND CSA TYPE INCLUDES 16 GA LEADS,

6 [152.4] LONG. ATEX VERSION INCLUDES

TERMINAL BLOCK

1-5/8 [41.28]

CLEARANCE FOR

COVER REMOVAL

8

[203.20]

6-3/4

[171.45]

4-11/16

[119.06]

1

[25.40]

EXPLOSION-PROOF HOUSING WITH 3/4˝ [19.05 MM]

FEMALE NPT OR BSPT CONDUIT CONNECTION

SWITCH BODY, SAE 72 BRASS OR 316 SS

1-1/2˝ [38.10 MM] MALE NPT OR BSPT

PROCESS CONNECTION

MAGNET KEEPER, 430 SS

VANE BLOCK, 316 SS

FIVE LAYER VANE 316 SS

DESIGNED FOR 1-1/2˝ TO 8˝ [38.10 TO 203.20 MM]

PIPES USABLE IN LARGER PIPE SIZES.

SERIES V4

VVIID

DEEO

O OONN

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; 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 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 -20°C≤Tamb≤73°C.

-20°C≤Process Temp≤73°C.

EU-Type Certificate No.: KEMA 03 ATEX

2383.

ATEX Standards: EN 60079-

0:2012+A11:2013; EN 60079-1:2014.

IECEx Certified: For Ex db IIB T6 Gb

-20°C≤Tamb≤73°C. -20°C≤Process

Temp≤73°C.

IECEx Certificate of Conformity: IECEx

DEK 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

(V~). CSA models: 5 A @ 125/250 VAC

(V~); 5 A res., 3 A ind. @ 30 VDC

(V ). MV option: 1 A @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].

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).

Compliance: ATEX, CE, CSA, FM,

IECEx, UL**.

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

MODEL CHART

Model

Description

Connection Type

V4-2-U

V4-SS-2-U

V4-2-U-NH**

V4

V4-SS

V4-NH**

V4-2-U-BSPT

V4-SS-2-U-BSPT

V4-BSPT

V4-SS-BSPT

Brass body, universal vane

316 SS* body, universal vane

Brass body, universal vane, no housing

Brass body, custom vane

316 SS* body, custom vane

Brass body, custom vane, no housing

Brass body, universal vane

316 SS* body, universal vane

Brass body, custom vane

316 SS* body, custom vane

NPT

NPT

NPT

NPT

NPT

NPT

BSPT

BSPT

BSPT

BSPT

*316 SS body with 430 SS magnet keeper.

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

†When both values are supplied, note which is critical.

Note: Consult factory for price and availability of fittings for V4 installation.

Thredolets, bushings, and tees are available in a variety of sizes and materials.

Note: For custom vane models, please supply factory with following information:

pipe size, flow direction (horizontal, up), mounting, pressure, temperature, specific

gravity, flow rates (maximum normal, actuation/deactuation†), etc.

OPTIONS

To order

add suffix: Description

-316

-AT

-BSPT

-D

-IEC

-MT

-MV

-TRD

-TRI

-V

316 SS magnet keeper, option to replace standard 430 SS

ATEX compliant construction

Female BSPT process connection and M25 conduit connection

DPDT contacts

IECEx certified construction

High temperature, option rated 400°F (204°C)*

Gold plated contacts, options for dry circuits*

Decreasing flow time delay relay option with 2 SPDT contacts,

adjustable from 0-1 to 0-31 minutes*

Increasing flow time delay relay option with 2 SPDT contacts,

adjustable from 0-1 to 0-31 minutes*

Vertical up flow, option for upward flow in vertical pipe

*See electrical rating in specification, no listings or approvals.

USA: California Proposition 65

WARNING: This product can expose you to chemicals including Lead, which is known to the State

of California to cause cancer and birth defects or other reproductive harm. For more information go

to www.P65Warnings.ca.gov.