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  Dwyer - Instruments Inc, U.S.A.

Flotect® Mini-size Flow Switches Model V6
Proof of flow or no flow in 1/2 to 2" pipe. Explosion-proof - leak proof body.

   
 
   
 

Explosion-Proof; U.L. and C.S.A. Listed -
Class 1, Groups A*, B, C, D; Class ll, Groups E, F, G. CENELEC: EExd IIC T6 (T amb = 75°C)
Built to protect against low flow and flow stoppage in pipelines from 1/2" to 2" diameter.
For pressures to 2000 PSIG (140KG/CM2); to 220°F (105°C) maximum.


(*Group A, stainless steel body only).

Surprisingly compact, the Flotect® V6 Flow Switch is engineered specifically to monitor liquid, gas or air flows in pipelines from l/2" to 2" diameter. With bushings added, it is easily adapted to 1/4" and 3/8" piping. It is solidly built and designed for years of trouble-free service on critical operations. The brass or stainless steel bar stock lower body is leak proof, preventing the pipeline product from entering switch housing above. There is no mechanical linkage - the flow switch is magnetically actuated and explosion-proof. The lower body holds the flow vane and one magnet which controls the switch actuating magnet in separate housing above. Maintenance is easy. The entire electrical assembly can be removed for inspection or replacement without shutting down the pipeline. A low flow version of the V6 is available which provides field adjustment of the actuation flow point.
Installation is also easy. Simply insert the tee in the pipeline and complete the electrical and conduit connections. The Flotect V6 is U.L. and C.S.A. listed for explosion-proof service - Class I, Groups A+, B, C & D and Class II, Groups E, F and G. The C.S.A. and CENELEC models must be furnished with an explosion-proof junction box for wiring connections.
+Group A, stainless steel body only.
*With bushings, adapts to 1/4" and 3/8"

How Flotect Protects Equipment
Operation is simple and dependable. In most applications, switch is normally off while flow of liquid, gas or air continues. When flow slows or stops, vane spring moves vane, actuating switch to start or stop motor, pump, engine, etc.; operate a damper or valve; shut down a burner or actuate an alarm or signal. It will control sequential operations of pumps, and protect unattended equipment from damage.

Used in a Wide Range of Applications
Chemical Processing - Air Conditioning - Refrigeration - Boilers - Heating Processes - Cooling Lines - Compressors - Machinery - Liquid Transfer - Water Treatment - Sprinkler Systems - Fuel Oil Pumps - Lube Oil Lines - Food Processing - Blending Operations - Machine Tools

PHYSICAL DATA
Temperature Limits: 220°F (105°C). High temperature options (not U.L., C.S.A. or CENELEC) 400°F (205°C).
Operating Pressure: To 2000 PSIG (140KG/CM2).
Electrical Rating: U.L.: 5A @ 125/250 VAC. C.S.A. and CENELEC: 5A @ 125/250 VAC, 5A resistive, 3A inductive @ 30 VDC. MV option - gold contacts for dry circuits rated 0.1 A @ 125 VAC. MT option - 400°F (205°C), 5A @ 125/250 VAC (not listed).
Wiring: U.L. and C.S.A.: 18 gauge, 18" (460MM) long. CENELEC: Terminal board.
Switch Body: Lower housing (wetted part): choice of brass or stainless steel.
Upper housing: choice of brass (standard) or stainless steel.
Vane: Stainless steel.
Piping Connection: 1/2" to 2" Tee supplied with control. For 1/4" and 3/8" pipes, use 1/2" switch and bushings.
Installation: Install with index arrow pointing in direction of flow. Mount in any position.
Weight: 2 to 6 lbs. (.9 to 2.7KG) depending upon construction.
Options: DPDT circuits; stainless steel upper housing, custom calibrations, OEM version with trimmable vane (supplied without tee).

Suggested Specification:
Automatic explosion-proof flow switches shall be vane generated to actuate a single pole double throw snap switch. Motion of the vane shall actuate switch by action of a magnet which controls the switch inside the one-piece sealed switch body. Switches shall be W.E. Anderson Model No. V6 with specified materials and pipe size.

   
 
Approximate Actuation -
Deactuation Flow Rates
For Air

Upper figures are SCFM
Lower figures are in NM3/S
Pipe
Size
Actuate Deactuate
1/2" 6.50
.003
5.00
.002
3/4" 10.0
.005
8.00
.004
1" 14.0
.007
12.0
.006
1 1/4" 21.0
0.01
18.0
.009
1 1/2" 33.0
.016
30.0
.014
2" 43.0
0.02
36.0
.017
Approximate Actuation -
Deactuation Flow Rates
For Cold Water

Upper figures are GPM
Lower figures are in M3/HR
Pipe
Size
Actuate Deactuate
1/2" 1.50
0.34
1.00
0.23
3/4" 2.00
0.45
1.25
0.28
1" 3.00
0.68
1.75
0.40
1 1/4" 4.00
0.91
3.00
0.68
1 1/2" 6.00
1.36
5.00
1.14
2" 10.0
2.27
8.50
1.93
   
 
   
 
   
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