ZBF24QS two-way dual-action self-retaining valve I. Overview ZBF24QS type self-retaining valve is mainly made up of body and drive mechanism composed of a self-retaining valve. After receiving the open (off) valve signal, the drive mechanism driven ball valve is energized to rotate the spool to position after power failure since the internal electric actuators, valve position indication pointing to the appropriate mechanical valve, the valve position switch output passive valve position signal. Spool every 90 ° medium flow switch once. Second, the technical parameters of the working medium: oil, water, non-corrosive gases rated pressure: 6.4MPa Medium temperature: ≤150 ℃ ambient temperature: 0 ~ 40 ℃ Relative humidity: ≤95% RH Diameter: 10mm Power supply voltage: DC220V DC24V AC220V AC110V DC110V (preferred AC) power: 20W Switching time: 15S Connection: threaded connection, can be equipped with card sets of pipe fittings (pipe outside diameter Φ12)