Anderson V4 Flow Switch - Sherman Instruments

V4 Flotect® Vane Operated Flow Switch

Specifications | Actuation/Deactuation Rates | Ordering Information

Explosion- Proof, Class I, Groups C & D, Class II, Groups E,F & G
U.L. and C.S.A. Listed
Field Adjustable 1½ to 20 inch pipe
Leak proof body

Compact and reliable, the Flotect® V4 Flow switch operates automatically to protect equipment and pipeline systems against damage from reduction or loss of flow. Installed in thousands of pipelines and processing plants around the world, this unique magnetically actuated switching design gives superior performance. Universal multi-layer vane accommodates pipe sizes from 1½" up. Custom vanes are available with factory calibration. There are no belIows, springs, or seals to fail. Instead, the free-swinging vane attracts a magnet within the solid metal switch body above, actuating a snap switch by means of a simple lever arm.

Features include: Simplicity of design and a leak-proof switch body, machined from bar stock for pressures to 2000 PSIG, (140kg/cm²), it eliminates the possibility of process fluid entering the switch compartment. The threaded conduit enclosure cover permits easy inspection or replacement of electrical assembly without shutting down the process, or removing electrical conduit. Power must be disconnected. The unit fits directly into pipeline with tee, thredolet or flange for easy installation. Pendulum-like vane action responds accurately to fluid flow rate. The custom vane or multi-layer vane is sensitive to low velocity flows, yet it is rugged enough to withstand high flow surges. If desired, a delay timer can be wired into the installation. All units are explosion proof and listed with U.L. and C.S.A. for Class I, Groups C and D, Class II, Groups E, F, and G or are flame-proof to CENELEC/SAA EExd IIB T6 (T amb = 75°C).

Specifications

Temperature Limits	Standard 275°F (135°C). High temperature option (no U.L., C.S.A. or CENELEC/SAA.) 400°F (205°C) max.
Operating Pressure	Brass: 1000 PSIG (70 kg/cm²). 316 SS: 2000 PSIG (140 kg/cm²). Ratings to 5000 PSIG (350 kg/cm²) available only SPDT. Only SS body
Electrical Rating	UL and CENELEC/SAA: 10A @ 125/250 VAC, C.S.A. 5A @ 125/250 VAC, 5A resistive, 3A inductive @ 30VDC. Optional Ratings (not UL, CSA or CENELEC/SAA) MV option: Gold contacts for dry circuits, 1A @ 125 VAC resistive, ½A inductive @ 30VDC. MT option: High temperature 400°F (205°C) 5A @ 125/250VAC
Wiring	UL/CSA unit: 16 gauge copper wire, 6" (152mm) long, mechanically and solder bonded to switch CENELEC/SAA unit: Terminal board
Switch Body	One piece milled and bored Brass or 316 stainless steel. Other materials on request.
Vane	316 Stainless Steel, 1-9/16" (40mm) wide. Standard trim includes 403SS and silver solder. Other materials on request.
Piping Connection	1½" NPT standard for mounting in 1½" thredolet.
Installation	Within 5° of vertical for proper operation. Units for horizontal installation (vertical pipes) on request.
Weight	4 lbs. 5oz. (1.96 kg)
Options	All 316SS wetted parts. Nickel alloy magnet keeper. DPDT circuits. Cartridge heater to melt paraffin, etc. Time delay relay. Custom vane lengths

Return to Top of Page

Actuation/Deactuation Flow Rates

Approximate Actuation/Deactuation Flow Rates for Cold Water
Upper figures in USGPM. Lower Figures in M³/Hr.

Vane Layers

1.5" Pipe

2" Pipe

3" Pipe

4" Pipe

6" Pipe

8" Pipe

10" Pipe

12" Pipe

14" Pipe

16" Pipe

18" Pipe

20" Pipe

8.8/3
2.0/0.7

24/9.2
5.5/2.1

65/25
15/5.7

120/45
27/10

260/100
59/23

450/180
102/41

725/270
165/61

1000/375
227/85

1400/550
318/125

1800/700
409/159

2300/900
522/204

2900/1100
659/250

1&2

14/5.7
3.2/1.3

35/14
7.9/3.2

70/35
16/7.9

180/90
41/20

310/160
70/36

500/250
114/57

700/350
159/79

975/500
221/114

1300/650
295/148

1600/800
363/182

2000/1000
454/227

1,2 & 3

15/7.4
3.4/1.7

35/20
7.9/4.5

110/60
25/14

180/135
41/31

275/225
62/51

400/300
91/68

550/425
125/97

725/550
165/125

925/700
210/159

1100/875
250/199

1,2,3 & 4

20/14
4.5/3.2

65/50
15/11

120/100
27/23

190/150
43/34

275/225
62/51

375/300
85/68

500/400
114/91

625/500
142/114

775/625
176/142

1,2,3,4 & 5

40/35
9.1/7.9

85/70
19/16

130/110
30/25

200/160
45/36

275/225
62/51

350/300
79/68

450/375
102/85

550/450
125/102

Actuation rates are based on cold water at a specific gravity of 1.0. For fluids of different specific gravity, actuation rates may be approximated by dividing the rate shown by the square root of the specific gravity.

Approximate Actuation/Deactuation Flow Rates for Air
Upper figures in SCFM. Lower figures in NM³/S

Vane Layers 1.5" Pipe 2" Pipe 3" Pipe 4" Pipe 6" Pipe 8" Pipe 10" Pipe 12" Pipe 14" Pipe 16" Pipe 18" Pipe 20" Pipe

1 61/25
.03/.012 106/43
.05/.02 310/125
.15/.06 570/235
.27/.11 1300/535
.61/.25 2250/930
1.1/.44 3550/1475
1.7/.70 5050/2075
2.4/.98 7000/2900
3.3/1.4 9100/3800
4.3/1.8 11600/4800
5.5/2.3 14300/5900
6.7/2.8

1 & 2 48/22
.02/.01 155/70
.07/.03 295/145
.14/.07 740/365
.35/.17 1290/630
.61/.30 2025/1000
.96/.47 2875/1425
1.4/.67 4000/2000
1.9/.94 5200/2600
2.5/1.2 6600/3300
3.1/1.6 8200/4000
3.9/1.9

1,2 & 3 75/40
.04/.02 160/90
.08/.04 445/255
.21/.12 880/570
.42/.27 1400/900
.66/.42 1975/1275
.93/.60 2700/1800
1.3/.85 3600/2300
1.7/1.1 4500/2900
2.1/1.4 5600/3600
2.6/1.7

1,2,3 & 4 92/60
.04/.03 290/195
.14/.09 610/450
.29/.21 975/725
.46/.34 1375/1025
.65/.48 1900/1400
.90/.66 2500/1800
1.2/.85 3200/2300
1.5/1.1 3900/2900
1.8/1.4

1,2,3,4 & 5 155/125
.07/.06 360/300
.17/.14 575/475
.27/.22 800/675
.38/.32 1100/900
.52/.42 1500/1200
.71/.57 1900/1500
.90/.71 2300/1900
1.1/.90

Values shown in both charts are nominal. If normal flows exceed actuation rates by less than 10%, custom vanes are recommended. Figures are based on standard vertical installation in a 1½" thredolet in a horizontal run of pipe.

Return to Top of Page

Ordering Information

Model	Description
V4-2-U	Brass body, universal vane
V4-SS-2-U	316SS* body, universal vane
V4-CUSTOM**	Brass body, custom vane
V4-SS-CUSTOM**	316SS* body, custom vane
Options (add suffix to part numbers above)
-D	DPDT contacts
-MT	High temperature construction (400°F/204°C); Available only on stainless steel models. Not UL, CSA or CENELEC listed
-TR	Time delay relay with 2 SPDT contact sets, adjustable from 0-1 to 0-31 minutes
-CN	CSA and CENELEC approved
-NI	Nickel alloy magnet keeper

*316 SS body with 430SS magnet keeper. For 316SS magnet keeper, specify all 316 stainless steel parts
** For custom vane models, please supply the following information: pipe size, flow direction (horizontal or up), mounting, pressure, temperature, specific gravity, flow rates (maximum, normal, actuation/deactuation and which is critical).

Return to Top of Page

Contact Us!

For further information, contact:

John Sherman Agencies Ltd.
1641 Venables Street
Vancouver, British Columbia, Canada
V5L 2H1

Phone: 604-254-9622
Fax: 604-254-3123

e-mail: info@johnsherman.com
www.johnsherman.com

Return to Top of Page