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Dwyer Series V6 FLOTECT® Mini-Size Flow Switches

FLOTECT® Mini-Size Flow Switches
Series V6

Surprisingly compact, the Series V6 Flotect® Flow Switch is engineered to specifically monitor liquid, gas, or airflows. Operation is simple and dependable with no mechanical linkage as the flow switch is magnetically actuated. The lower body holds the flow vane and one magnet, which controls the switch actuating magnet in the separate upper housing. In most applications the switch is normally off with the pipeline flow forcing the vane against the vane spring. As the flow decreases the vane spring pushes back the vane, actuating the switch to signal an alarm or shutdown. 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.

• Leak proof lower body machined from bar stock
• Choice of models in a tee with calibrated vane or field adjustable trimmable vane
• Weatherproof
• Explosion-proof (listing included in specifications)
• Electrical assembly can be easily replaced without removing the unit from the installation so that the process does not have to be shut down
• High pressure rating of 1000 psig (69 bar) with brass body and 2000 psig (138 bar) on the 316 SS body (see specifications)
• Low flow model offers field adjustable set point
• Easy installation, simply insert the tee in the pipline and complete electrical connections

Select a link under the "item" tab below to order.

Table 1Table 2Table 3Table 4Table 5Table 6Table 7Table 8
Table 1Series
V6Series V6 flow switch
Table 2Construction
EPExplosion proof
Table 3Upper Body
SStainless Steel
Table 4Lower Body
SStainless Steel
Table 5Circuit (Switch)
Table 6Tee Connection Size
51-1/2˝ NPT
LFLow Flow Model (1/2˝ NPT connections)
62˝ NPT
41-1/4˝ NPT
31˝ NPT
23/4˝ NPT
11/2˝ NPT
Table 7Tee Material
FSForged Steel
SStainless Steel
0No tee, field trimmable vane (For LF Model no tee material chosen, tee material matches lower housing choice)
Table 8Options
CSACSA approved construction with junction box*
ATATEX approved construction with junction box
MVGold contacts on snap switch for dry circuits (see specifications for ratings)
MTHigh temperature option rated 400°F (205°C) (see specifications for ratings)*
VITFluoroelastomer O-rings in place of Buna-N on low flow models
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 Flow 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 or ATEX). ATEX compliant AT 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 stainless steel tee models 2000 psi (138 bar), low flow 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 0344 II 2 G EEx d IIC T6 Process Temp≤75°C. EC-type Certificate No.: KEMA 04ATEX2128
Switch Type SPDT snap switch standard, DPDT snap switch optional
Electrical Rating
UL models 5A @125/250 VAC (V~)
CSA and ATEX models 5A @ 125/250 VAC (V~); 5A res., 3A ind. @ 30 VDC (V )
MV option 1A @ 125 VAC (V~)
MT option 5A @125/250 VAC (V~)
[MT option not UL, CSA or ATEX
Electrical Connections UL models: 18 AWG, 18˝ (460 mm) long. ATEX and CSA models: terminal block
Upper Body Brass or 303 SS
Conduit Connections 3/4˝ male NPT standard, 3/4˝ female NPT on junction box models
Process Connection 1/2˝ male NPT on models without a tee
Mounting Orientation Switch can be installed in any position but the actuation/deactuation flow 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 flow models are field adjustable in the range shown. See set point charts on opposite page
Weight 2 to 6 lb (.9 to 2.7 kg) depending on construction
Options not Shown Custom calibration, bushings, PVC tee, reinforced vane
Agency Approvals UL, CSA, CE, and ATEX

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