Pneumatic butterfly valve type

Pneumatic butterfly valve type pneumatic butterfly valve is a valve,
it's power supply comes from the gas, you usually can realize automatic control valves are closed.
type D671X - about pneumatic butterfly valve 16 p - 6, for example:
with its model D671X, D is the meaning of butterfly valve, X represents its sealing surface, soft seal are
6 represent the calibre of the pneumatic butterfly valve, the 150 is a representative model of pneumatic butterfly valve diameter is 150 mm.
in the middle of the 16 p said pressure pneumatic butterfly valve, 16 p represents its pressure is 1. 6MPa。