vertical wave valve control throttle valve is driven by compressed air valve ... can product as the request of customers vertical wave valve control Valve Size: 2" -128", 150LB-600LB, PN6~PN100. ... iron, ductile iron4) Operation: hand wheel, worm gear, electric actuator, pneumatic operatorStandards:1) Design and Manufacture: GB,DIN,API2) ... ,JIS, with different dimension,too. vertical wave valve control