Gost Standard Bi-Directional Butterfly Valves
The standards are as below,
Design and Manufacture：EN593
Face to Face：EN558
Test and Inspection：EN12266-1
Flange Dimensions:GOST 54432
Design and Manufacture：EN593
Face to Face：EN558
Test and Inspection：EN12266-1
Flange Dimensions:GOST 54432
At present, we make GOST standard Bi-directional butterfly valves ranging from DN40 to DN1600, and from PN1 to PN100. For different
sizes and pressure, two types of seat ring structures are mainly used. One is floating seat and the other is same as uni-directional butterfly
valves. For the latter, our company has adjusted stem diameter, seat and seal ring width to ensure that sealing from both directions can be achieved.
Generally speaking, it is applied for butterfly valves of max size DN250 and max pressure PN16. For larger size and higher pressure , the floating
seat is adopted. At present, our company can produce uni-directional and bi-directional butterfly valves. The connection can be flange, wafer, lug,
and butt welded ends.
sizes and pressure, two types of seat ring structures are mainly used. One is floating seat and the other is same as uni-directional butterfly
valves. For the latter, our company has adjusted stem diameter, seat and seal ring width to ensure that sealing from both directions can be achieved.
Generally speaking, it is applied for butterfly valves of max size DN250 and max pressure PN16. For larger size and higher pressure , the floating
seat is adopted. At present, our company can produce uni-directional and bi-directional butterfly valves. The connection can be flange, wafer, lug,
and butt welded ends.
