SMC VNB711A-N50A-5DZ-Q Pneumatic Solenoid Valve

SMC VNB711A-N50A-5DZ-Q is a bronze-bodied, external-pilot, two-port process valve in the VNB family designed for precise flow control in pneumatic systems. The valve is actuated by an external pilot solenoid and uses a 24 VDC coil in the DZ variant, with a DIN terminal and an integrated light and surge suppressor for straightforward panel wiring. It supports port sizes from 1/8 to 2 Rc(PT) and orifice sizes from 7 mm to 50 mm, with the N50A designation indicating the 50 mm orifice option and Cv flow coefficients ranging from 0.80 to 43 depending on the size. Seals are available in NBR, FKM, or EPR to match media and temperature requirements. The unit is rated for a maximum pressure of 1.5 MPa (proof pressure) and a maximum medium temperature of 60 C, with an ambient temperature limit of 50 C. Weighing about 6.3 kg, the VNB711A-N50A-5DZ-Q is built for reliable, low-leakage flow control in process lines, instrumentation air, and other pneumatic circuits where stable, adjustable flow is essential. Typical applications include calibrated bleed, bypass, and flow regulation in automated manufacturing, chemical handling, and plant air systems, where external pilot control and a rugged bronze body provide durability in industrial environments.