GOST 10811-1964 Pipeline valves for general porposes. Double ported control valves for py 16; 40 and 64 kgf/sq. Cm. Dimensions for connecting diaphragm operator
1964GOST 10811-1964 Pipeline valves for general porposes. Double ported control valves for py 16; 40 and 64 kgf/sq. Cm. Dimensions for connecting diaphragm operator