Butterfly valve gearbox cast steel Multi-stage partial-turn gear operator SJ series multi-stage partial-turn gear operators SJ series multi-stage partial-turn gear operators are widely used in water plants, ... Read More
Butterfly valve gearbox cast steel Multi-stage partial-turn gear operator SJ series multi-stage partial-turn gear operators SJ series multi-stage partial-turn gear operators are widely used in water plants, ... Read More
Die cast aluminum Partial-turn gear operators butterfly valve gearbox worm gear vent valve SD series partial-turn gear operators SD series partial-turn gear operators adopt a cast aluminum casing and are ... Read More