четыре ходовой шаровой кран

API valve these valves can be widely used for oil&gas storage/transmission,chemical,metallurgical,paper making,pharmaceutical,food,etc sectors.unpon different demands,the valves could be used in open-qir explosion-proof,etc adverse&hazardous circumstances with personal safety and emergency shut-off,the integral design ensures coordination between actuator and valve,and also facilitates us better services for customers advantages: 1.it will achieve remote control&field operation.it can be controlled with a single set of multi-sets.or linked to computer for high-level propram control to enable offering automatic control function&to guarantee safety&stable in operation. 2.its different kinds can be selected according to requirements for better services at actual working conditions,such as,open-air,water-proof,explosion-proof,fire-safe,gas-proof,cold-resistance&radiation-resistance.etc adverse circumstances,so that personal safety could be ensured. 3.it can be used for emergency shut-off