Dwyer Instruments V6EPB-B-S-5-B FLOTECT Mini-Size Flow Switch 1-1/2" NPT Brass SPDT

The Dwyer Instruments V6EPB-B-S-5-B is a Series V6 FLOTECT® mini-size flow switch featuring a brass upper and lower body with a brass tee and 1-1/2" NPT process connections. Designed to monitor liquid, gas, or air flows, this compact magnetically actuated switch requires no mechanical linkage for dependable, long-lasting operation.

The lower body houses the flow vane and a ceramic magnet that controls the switch-actuating magnet in the separate upper housing. Under normal pipeline flow, the vane is pushed against the vane spring. As flow decreases, the spring returns the vane to its rest position, actuating the SPDT snap switch to trigger an alarm or initiate a shutdown — protecting pumps, motors, and other critical equipment against low-flow or no-flow conditions.

Key Features:

• Switch Type: SPDT snap switch
• Process Connection: 1-1/2" NPT (brass tee factory-installed)
• Body Material: Brass upper and lower body
• Tee Material: Brass
• Enclosure Rating: Weatherproof (NEMA 4) and Explosion-Proof
• Hazardous Location Listing: UL and CSA listed for Class I, Groups A, B, C & D; Class II, Groups E, F & G
• Electrical Rating: UL: 5A @ 125/250 VAC; CSA/ATEX/IECEx: 5A @ 125/250 VAC; 5A res., 3A ind. @ 30 VDC
• Conduit Connection: 3/4" male NPT standard
• Temperature Limits: -4 to 220°F (-20 to 105°C) standard
• Pressure Limit: 1,000 psig (69 bar) with brass body; 250 psi (17.2 bar) with brass tee
• Wetted Materials: Vane: 301 SS; Lower Body: brass; Magnet: ceramic; Tee: brass; Other: 301/302 SS
• Mounting Orientation: Any position (flow rate charts based on horizontal pipe runs)
• Electrical Assembly: Field-replaceable without removing unit from pipeline

The V6EPB-B-S-5-B is well-suited for industrial pipeline installations, processing plants, HVAC systems, and any application requiring reliable low-flow or no-flow detection. The explosion-proof, weatherproof enclosure makes it ideal for demanding environments. Also known as the V6EPBBS5B.