Z2050QPF-F+CQKB24-S-RR - Belimo
USA Market Products

ZoneTight™ (QCV), Press Fit, 1/2", 2-way, Cv 1.4 |Valve Actuator, Electronic fail-safe, AC/DC 24 V, On/Off, 1 x SPST, Normally Closed, Fail-safe position Closed