Submittal Sheet

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©Copyright 2021 Dwyer Instruments, Inc.
Printed in U.S.A. 1/21 DS-V6 Rev. 4
SERIES V6 | W.E. ANDERSON FLOTECT
®
MINI-SIZE FLOW SWITCHES
®
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˝. With bushings added the unit is
easily adapted to 1/4˝ and 3/8˝ piping.
• 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
• 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
FEATURES/BENEFITS
DESCRIPTIONAPPLICATIONS
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DWYER INSTRUMENTS, INC.
Important Notice: Dwyer Instruments, Inc. 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.
V6 with tee
V6lowow
SERIES
V6: Flotect
®
mini-size ow switches
CONSTRUCTION
EP: Explosion proof
BODY
B-B: Brass
S-S: SS
CIRCUIT (SWITCH)
-S: SPDT
-D: DPDT
V6 EP B-B -S
E -MT-B
TEE or PROCESS CONNECTION SIZE
-1: 1/2˝ NPT
-2: 3/4˝ NPT
-3: 1˝ NPT
-4: 1-1/4˝ NPT
-5: 1-1/2˝ NPT
-6: 2˝ NPT
-LF: Low ow model (1/2˝ NPT connections)
TEE or PROCESS CONNECTION TYPE
BLANK: NPT
E: BSPT or tee process connection and M25 conduit connection or junction box models
OPTIONS
-AT: ATEX compliant construction with
junction box
-CSA: CSA approved construction with
junction box
-IEC: IECEx certied construction with
junction box
-MT: High temperature option rated 400°F
(205°C) (see specications for ratings)
-MV: Gold contacts on snap switch for dry
circuits (see specications for ratings)
-VIT: Fluoroelastomer O-rings in place of
Buna-N on low ow models
TEE MATERIAL
-MI: Iron
-FS: Forged steel
-B: Brass
-S: SS
-0: No tee, eld trimmable vane**
(For LF model no tee material chosen, tee
material matches body choice)
**Vane will be trimmed to the connection
size. If full eld trimmable vane is desired,
must select with tee connection size 6.
-2
SET POINT CHARTS
APPROXIMATE ACTUATION/DEACTUATION
FLOW RATES FOR AIR; SCFM (LPM)
Pipe Size Actuate Deactuate
1/2˝
3/4˝
1˝
1-1/4˝
1-1/2˝
2˝
6.50 (180)
10.0 (300)
14.0 (420)
21.0 (600)
33.0 (960)
43.0 (1200)
5.00 (120)
8.00 (240)
12.0 (360)
18.0 (540)
30.0 (840)
36.0 (1020)
V6 set point charts - Factory installed tee
APPROXIMATE ACTUATION/DEACTUATION
FLOW RATES FOR COLD WATER; GPM (LPM)
Pipe Size Actuate Deactuate
1/2˝
3/4˝
1˝
1-1/4˝
1-1/2˝
2˝
1.50 (5.667)
2.00 (7.5)
3.00 (11.33)
4.00 (15.17)
6.00 (22.67)
10.00 (37.83)
1.00 (3.83)
1.25 (4.67)
1.75 (6.67)
3.00 (11.3)
5.00 (18.9)
8.50 (32.2)
V6lowowsetpointchart
MIN-MAXFLOWRATESIN1/2˝PIPE
Media Actuate Deactuate
GPM-water
LPM-water
SCFM-air
LPS-air
.04-0.75
.15-2.84
.18-2.70
.09-1.3
.03-0.60
.11-2.27
.15-2.0
.07-.95
Pressure drop (head loss) is a function of both
set point and ow rate. Typically, pressure drop at
actuation ow rate listed will be 5-10 psid (.34-.69
bar). Pressure drops at other ow rates will vary in
proportion to the (change in ow).