Series V6 Flotect® Mini-Size Flow Switch
Monitor flow in 1/2" to 2" pipe, Explosion-proof
Surprisingly compact, the Series V6 Flotect® Flow Switch is engineered to specifically monitor liquid, gas, or air flows. 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.
- Protects pumps, motors and other equipment against low or no flow
- Controls sequential operation of pumps
- Automatically starts auxiliary pumps and engines
- Stops liquid cooled engines, machines and processing when coolant flow is interrupted
- Shuts down burner when air flow through heating coil fails
- Controls dampers according to flow
- Signals alarm when emergency shower in use
Models & Ordering
- 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, 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 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 Ex d IIC T6 Gb Process Temp≤75°C Alternate Temperature Class T5 Process Temp≤90°C, 115°C (T4) Process Temp ≤105°C consult factory. EC-type Certificate No.: KEMA 04ATEX2128. ATEX Standards: EN 60079-0: 2009; EN 60079-1: 2007. IECEx Certified: For Ex d 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 Certificate of Conformity: IECEx DEK 11.0039; IECEx Standards: IEC 60079-0: 2007; IEC 60079-1: 2007; Korean Certified (KC) for: Ex d IIC T6 Gb Process Temp≤75°C; KTL Certificate Number: 2012-2454-75.
- Switch Type:
- SPDT snap switch standard, DPDT snap switch optional.
- Electrical Rating:
- UL models: 5A @125/250 VAC. CSA, ATEX and IECEx 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, ATEX or IECEx].
- Electrical Connections:
- UL models: 18 AWG, 18" (460 mm) long. ATEX/CSA /IECEx models: terminal block.
- Upper Body:
- Brass or 303 stainless steel.
- 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 Catalog page.
- 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.
- Leak proof lower body machined from bar stock
- Choice of models in a tee with calibrated vane or field adjustable trimmable vane
- 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
- Low flow model offers field adjustable set point
- Easy installation, simply insert the tee in the pipeline and complete electrical connections
- 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
|EXAMPLE||V6||EP||BB||D||1||B||AT||Series V6EPB-B-D-1-B-AT Flotect® Mini-Size Flow Switch, brass body, DPDT, 1/2" brass tee, with ATEX approval.|
|SERIES||V6||Flotect® Mini-Size Flow Switch|
|TEE TYPE AND
Stainless Steel 150#
PVC NPT Threads
PVC Sweat Joints
No Tee with Field Trimmable Vane
|0.18 Spring for Low Flow
.020 Spring for Low Flow
.022 Spring for Low Flow
.022 Spring for Low Flow with Alnico Magnet
.031 Spring for Low Flow
1/2" x 3/4" Bushing
1/2" x 1" Bushing
1/2" x 1-1/4" Bushing
1/2" x 1-1/2" Bushing
1/2" x 2" Bushing
Flow Test Report
Junction Box with Left Side Conduit
Stainless Steel Orifice
Stainless Steel Tag
Terminal Block Connector
- Why should a customer be discouraged from buying a V6 without a tee and installing it in his own tees?
- Two reasons: One, the customer will frequently tighten the body in the tee one turn too many, resulting in the vane hitting the tee. This bends the vane and it can jam up even after the switch is backed out one turn to its proper position. Two, there is also a wide variation in tee dimensions between manufacturers which aggravates the problem.
- What does actuation and de-actuation mean?
- Actuation means that the flow rate has reached a point where the microswitch trips or the contacts of the microswitch change state. De-actuation means that the flow rate has decreased to a point where the microswitch returns to its normal state.
- What type of pressure drop is expected in the V6-LF?
- 5-15 psi, however, it will vary in proportion to the flow rate.
- Are custom vanes for the V6 available?
- Yes, we can supply customer vanes for the V6. The information we would require is as follows: pipe size, flow direction (horizontal, up, down), mounting, pressure, temperature, specific gravity, flow rates (maximum normal, actuation/de-actuation). Please see custom vane option in the online configurator.
- What material is used as a seal between the process fluid and the electrical portion of the switch?
- The body material; as there is no separate "seal" since the body is machined from solid stock and the switch is magnetically actuated.
- On your Flow Switches, which model has a Form C type contact
- Form C contact is a SPDT snap switch. Many of Dwyer’s flow switches have SPDT snap switches. The V4, V6, V7, FS-2, and V8 are some of them.
- What is the maximum flow rating on your Series V6 FLOTECT Flow switch?
- The maximum flow rating would depend on the specific model of V6 taking into consideration taking into account the line size and whether a tee is installed or not.
- What is the pressure drop across a V6 Flow switch?
- Pressure drop (head loss) is a function of both set point and flow rate. Typically, pressure drop at actuation flow rate listed will be 5 – 10 PSID (0.34 – 0.69 Bar). Pressure drops at other flow rates will vary in proportion to the change in flow.
- What precautions should be taken when making an outdoor installation?
- Keep the junction box above the nearest low point in the conduit run and make sure the conduit connection is sealed to prevent condensation from running into the switch.
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