Explosion Proof Float Level Switch

Place of Origin USA
Brand Name Dwyer
Certification CCC CE
Model Number V4
Minimum Order Quantity 1
Price $460-$588/PCS
Packaging Details 100% original package
Delivery Time 14 work days
Payment Terms L/C, T/T, Western Union
Supply Ability 1000Piece/Pieces per Month

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Product Details
Operating Temperature -20-205℃ Media Type Water
V4-SS-2-U 316 Stainless Steel Body*, Universal Blade Weight 4lbs 8oz (1.9kg)
Media Gas Or Liquid Compatible With Wetted Parts Pressure Range Also Available For 5000 Psig (345bar)
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Explosion Proof Float Level Switch


Float Level Switch 5000 psig


5000 psig Adjustable Float Switch

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Model V4-2-U
Model V4-SS-2-U
Model V4-SS
Model V4
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Model V4-2-U
Product Description

Dwyer V4-2-U Rake Vane Field Adjustable Explosion Proof Flow Switch Brass Body Universal Blade

V4 Series FLOTECT® Vane Flow Switches


Field adjustable, 1.5"-20" pipe, explosion-proof, leak-proof body

The robust and reliable V4 Series FLOTECT@ Vane Flow Switches can be used to automatically protect equipment and piping systems from damage caused by reduced or lost flow. V4 is time-tested and has been used in tens of thousands of pipelines and processes around the world. The unique magnetic actuated switch design guarantees its excellent performance, it has no bellows, spring and or seal failure. Instead, the freely swinging blade attracts a magnet in the solid metal switch body, and a simple lever activates the snap switch.


Anti-leakage switch body is machined from bar stock

Blades can be customized according to user needs, model V4, or field adjustable multi-layer blades, model V4-2-U (see setting table)

Weatherproof, designed to NEMA-4

Explosion-proof (see specifications)

Can be easily installed directly on the pipeline through welded pipe threads, tee threads or flanges (see application installation drawing)

Can be used on pipes larger than 1.5 inches

Electrical components can be replaced without disassembly, thus guaranteeing uninterrupted processes

Brass body withstands 1000 psig (69 bar) high pressure and 2000 psig (138 bar) 316 stainless steel body


Protect pumps, motors and other equipment from damage caused by low or no flow

Control the sequential operation of equipment such as pumps

Automatic start of auxiliary pump and engine

Water-cooled engines, machines and operating processes stop when coolant flow is interrupted

Turn off the heater when there is no air flow through the heating tube

Control the gate according to the flow


Media: Gas or liquid compatible with wetted parts

Wetted material:

Blade: 316 stainless steel

Body: Brass or 316 Stainless Steel Standard

Magnet: 430 stainless steel standard, 316 stainless steel optional

Options: Other materials are also available, please consult factory (eg: PVC, Hastelloy, Nickel, Monel, Titanium)

Temperature Range: Standard -4 to 275°F (-20 to 135°C), MT High Temperature Option 400°F (205°C) [MT option is not UL, CSA, ATEX or SAA certified]

Pressure Range: Brass body 1000 psig (69 bar), 316 stainless steel body 2000 psig (138 bar). Also available for 5000 psig (345bar) 316 stainless steel body and SPDT switch only

Protection indicators: all weather and explosion-proof. UL and CSA Class I, Groups C and D; Class II, Groups E, F and G

ATEX 0344 II 2 G EEx d IIB T6 -20°C≤Tamb≤75°C

EC-Type Approval Number: KEMA 03ATEX 2383

SAA: Exd C T6 (T amb=60°C), Zone I and FM Approved

Switch model: SPDT standard, DPDT optional

Electrical Specifications: UL, FM ATEX and SAA Type 10A @ 125/250 VAC. CSA Type: 5A @ 125/250 VAC; 5A res., 3A ind. @ 30 VDC . MV Type: 1A @125 VAC; 1A res., .5A ind. @ 30 VDC. MT models: 5A @ 125/250 VAC. [MT and MV options do not have UL, CSA, FM, ATEX or SAA]

Electrical Connections: UL/CSA Type: 16-gauge copper wire, 6 inches (152 mm) long. Type ATEX and SAA: Junction Box

Pipe Connection: 3/4" FNPT

Process Connection: 1.5" MNPT

Installation: Install within 5 degrees of vertical for ease of operation, and can also be installed horizontally (with a riser with upstream fluid)

Adjustable Set Points: Universal Vane: 5-Blade Combination

Weight: 4lbs 8oz (1.9kg)

Certifications: UL, CSA, CE, FM, SAA and ATEX


Brass Body, Universal Blade


316 Stainless Steel Body*, Universal Blade


Brass body, custom blades


316 stainless steel body*, custom blades

*316 stainless steel body with 430 stainless steel magnet



-D, DPDT contact

-MV, gold plated contacts, dry circuit option

-MT, high temperature, 400°F (205°C) option (see electrical specifications for specifications, no certification)

-TRI (increasing flow rate), -TRD (decreasing flow rate), time delay relay, optional 2 SPDT contacts, adjustable in 0-1 or 0-31 seconds (no certification)

-316, 316 stainless steel magnets instead of standard 430 stainless steel magnets

- SAA, SAA listed structure

-V, vertical flow, select for upward flow in vertical pipes

-AT, ATEX listed structures


Explosion Proof Float Level Switch 0

Explosion Proof Float Level Switch 1

Explosion Proof Float Level Switch 2

Media Type
Operating Temperature
-4/275 degrees_fahrenheit
Flow Rate
10L/min start up
Maximum Measurement
0-1000 psig
Stainless Steel
Switch Type
DPDT , Flow Switch



1. who are we?
We are based in Zhejiang, China, start from 2013,sell to Southeast Asia(40.00%),Domestic Market(35.00%),Africa(15.00%),Mid East(10.00%). There are total about null people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3. what can you buy from us?
Differential pressure gauge,Red oil differential pressure gauge,Pressure differential pressure transmitter,Level controller,Float switch

4. why should you buy from us not from other suppliers?
We have excellent and experienced foreign trade team and other teams to provide you with the best and professional services. Our products are sold all over the world as best-selling products and high reputation products. We aim to maintain a high standard

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