ventilative butterfly valve
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Ventilated butterfly valve
The seal ring of ventilated butterfly valve is made of the material same as body material, and the applicable temperature is up to the body material, PN<=0.6 MPa, generally, it is used in pipe of industry, metallurgy, environmental protection etc. as ventilating and adjust medium flow.
1 Novelty and reasonable design, unique structure, light, prompt open/closure
2 Small torquet, operation easily, laborsaving and skillful.
3 Use suitalbe material to satisfy low, middle, high different medium and corrosive medium etc
Design standard:GB/T12238-1989 JB/T8692-1998
Flange connection dimension:GB/T9115.1-2000
Face to face:GB/T12221-1989
Pressure test: GB/T13927-92; JB/T9092-1999