Dwyer Series V6 Flotect® Explosion Proof Flow Switch is surprisingly compact and engineered to monitor liquid, gas, or air flows. 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 specifications). 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.
- 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 airflow through heating coil fails
- Controls dampers according to flow
- Signals alarm when an emergency shower or eyewash station in use
Service : Gases or liquids compatible with wetted materials.
Wetted Materials : Standard V6 skus: 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 skus: 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 skus 1000 psig (69 bar), 303 SS lower body with no tee skus 2000 psig (138 bar). Brass tee skus 250 psi (17.2 bar), iron tee skus 1000 psi (69 bar), forged and stainless steel tee skus 2000 psi (138 bar), low flow skus 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 skus 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. 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 skus: 5 A @125/250 VAC. CSA, ATEX and IECEx skus: 5 A @ 125/250 VAC (V~); 5A 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 skus: 18 AWG, 18″ (457.20 mm) long. ATEX/CSA / IECEx skus: terminal block.
Upper Body : Brass or 303 stainless steel.
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 skus.
Process Connection : 1/2″ (12.70 mm) male NPT or 1/2″ (12.70 mm) male BSPT on skus 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 skus none. Without tee skus vane is trimmable. Low flow skus are field adjustable in the range shown. See set point charts on Catalog page.
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.