Product Overview

DWYER INSTRUMENTS, INC. | dwyer-inst.com272
Flow Switches,
Paddle
FLOW
FLOTECT
®
MINI-SIZE FLOW SWITCHES
Monitor Flow in 1/2˝ to 2˝ (12.70 to 50.80 mm) Pipe, Explosion-Proof, Compact
The Series V6 Flotect
®
Mini-Size Flow Switches are surprisingly compact, and
specically engineered to monitor liquid, gas, or air ows. 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). Tees are available for installation in pipelines from 1/2˝ to 2˝ (12.70 to
50.80 mm). With bushings added the unit is easily adapted to 1/4˝ and 3/8˝ (6.35 and
9.53 mm) piping.
BENEFITS/FEATURES
• 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
• Choice of models in a tee with calibrated vane or eld adjustable trimmable vane
• Easy installation with simple pipe insert via tee and simple electrical switch
connections
• High-pressure rating of 1000 psig (69 bar) with brass body and 2000 psig (138 bar)
with stainless steel body
• Low ow model offers eld adjustable set point
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
• Signals alarm when emergency shower or eyewash station in use
LOCKING COLLAR
ASSEMBLY
3/4 [19.05] NPT OR BSPT
UPPER HOUSING
SWITCH SUPPORTS
SPDT [OR DPDT]
SNAP SWITCH
MAGNET LEVER PIN
MAGNET LEVER
ASSEMBLY
MAGNETS
LOWER HOUSING-BRASS
OR STAINLESS STEEL
VANE SPRING
VANE PIVOT PIN
VANE PIVOT BRACKET
SNAP RING
1/2 [12.70] NPT OR
1/2 [12.70] BSPT
STAINLESS STEEL VANE
OVERALL LENGTH WITH 1-1/4˝
TEE CONNECTION
APPROXIMATELY 8˝ [31.75 to 203.20 MM]
5-13/16
[147.64]
18 GA. LEADS
18 [457.20] LONG
3/4 [19.05]
NPT OR BSPT
SWITCH HOUSING
300 SERIES STAINLESS
STEEL OR BRASS
CERAMIC
MAGNET
PISTON 300
SERIES
STAINLESS
STEEL
OR BRASS
INLET 1/2
[12.70] NPT
OR 1/2 BSPT
[12.70]
VA
LVE BODY MATERIAL
300 SERIES ST
AINLESS
STEEL OR BRASS
3-5/8
[92.08]
O-RING
BUNA-N
HARDWARE [SCREW,
SPRINGS & CHECK
VALVE] STAINLESS STEEL
OUTLET 1/2
[12.70] NPT
OR 1/2 [12.70] BSPT
SWITCH BODY
1-1/8 [28.58] SQ
300 SERIES
STAINLESS STEEL
OR BRASS
4-3/4
[120.65]
3-3/8
[85.73]
V6 with tee V6 low ow
uSet Point Charts: See page 273 (Series V6)
SERIES V6 | W. E. ANDERSON
™
BY DWYER
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USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
SPECIFICATIONS
Service: Gases or liquids compatible with wetted materials.
Wetted Materials: Standard V6 models: Vane: 301 SS; Lower body: brass or 303
SS; Magnet: Ceramic; Other: 301, 302 SS; Tee: Brass, iron, forged steel, or 304 SS.
V6 low ow models: Lower body: Brass or 303 SS; Tee: Brass or 304 SS; Magnet:
Ceramic; O-ring: Buna-N standard, Fluoroelastomer optional; Other: 301, 302 SS.
Temperature Limits: -4 to 220°F (-20 to 105°C) standard, MT high temperature
option 400°F (205°C) (MT not UL, CSA, ATEX, IECEx or KC) ATEX Compliant AT,
IECEx IEC option and KC (KC option); Ambient temperature: -4 to 167°F (-20 to
75°C); Process temperature: -4 to 220°F (-20 to 105°C).
Pressure Limit: Brass lower body with no tee models 1000 psig (69 bar), 303 SS
lower body with no tee models 2000 psig (138 bar). Brass tee models 250 psi (17.2
bar), iron tee models 1000 psi (69 bar), forged and SS tee models 2000 psi (138
bar), low ow models 1450 psi (100 bar).
Enclosure Rating: Weatherproof and Explosion-proof. Listed with UL and CSA for
Class I, Groups A, B, C and D; Class II, Groups E, F, and G. (Group A on stainless
steel body models only).
ATEX
2813 II 2 G Ex db IIC T6 Gb Process Temp ≤75°C Alternate
Temperature Class T5 Process Temp ≤90°C, 115°C (T4) Process Temp ≤105°C
consult factory. EU-Type Certicate No.: KEMA 04ATEX2128.
ATEX Standards: EN 60079-0:2012+A11:2013; EN 60079-1:2014.
IECEx Certied: For Ex db IIC T6 Gb Process Temp≤75°C Alternate Temperature
Class T5 Process Temp ≤90°C, 115°C (T4) Process Temp≤105°C consult factory.
IECEx Certicate of Conformity: IECEx DEK 11.0039;
IECEx Standards: IEC 60079-0:2011; IEC 60079-1:2014;
Korean Certied (KC) for: Ex d IIC T6 Gb Process Temp ≤75°C;
KTL Certicate Number: 12-KB4BO-0091.
Switch Type: SPDT snap switch standard, DPDT snap switch optional.
Electrical Rating: UL models: 5 A @125/250 VAC. CSA, ATEX and IECEx models:
5 A @ 125/250 VAC (V~); 5 A res., 3 A ind. @ 30 VDC (V ). MV option: .1 A @ 125
VAC (V~). MT option: 5 A @125/250 VAC (V~). [MT option not UL, CSA, ATEX or
IECEx].
Electrical Connections: UL models: 18 AWG, 18˝ (457.20 mm) long. ATEX/CSA /
IECEx models: Terminal block.
Upper Body: Brass or 303 SS.
Conduit Connections: 3/4˝ (19.05 mm) male NPT standard, 3/4˝ (19.05 mm)
female NPT or M25 with BSPT option on junction box models.
Process Connection: 1/2˝ (12.70 mm) male NPT or 1/2˝ (12.70 mm) male BSPT
on models without a tee.
Mounting Orientation: Switch can be installed in any position but the actuation/
deactuation ow rates in the charts are based on horizontal pipe runs and are
nominal values.
Set Point Adjustment: Standard V6 models none. Without tee models vane is
trimmable. Low ow models are eld adjustable in the range shown. See set point
chartsu.
Weight: 2 to 6 lb (.9 to 2.7 kg) depending on construction.
Options not Shown: Custom calibration, bushings, PVC tee, reinforced vane,
DPDT relays.
Agency Approvals: ATEX, CE, CSA, IECEx, KTL, UL.