Cock the purpose of the pneumatic valve

cock pneumatic valve is generally used in low, medium, small diameter, temperature is not high, for truncation, distribution, and the flow direction of medium change. Straight-through cock pneumatic valve is mainly used for cutting medium flow; Only way cock pneumatic valve and pneumatic valve spool cock is used to change the flow direction of medium or medium distribution. When used in high temperature circumstance, can use pneumatic valve lift cock, cock top design promotion agencies. When opened, comes to cock, first with pneumatic valve seal face off. The pneumatic valve torque is small, less wear of sealing surface, long service life. Domestic cock pneumatic valve parameters are as follows: nominal diameter DN a mm; Nominal pressure PNo. - oMPa; Working temperature OC or less.