Double disc brake performance of the pneumatic valve

） Good sealing a pneumatic wedge gate valve, such as sealing surface Angle and cooperate to be not very accurate pneumatic valve seat, still has good sealing.
　　） After disc sealing surface wear, the spherical centers at the bottom of the metal pad can be used for thicker, generally don't have to be surfacing welding and grinding seal face, this single disc and flexible disc hard to do.
　　） More parts than other forms of brake pneumatic valve.
　　） In addition to the applicable to steam, oil, etc, also applies to the part of the switch frequency and the sealing surface wear large medium, should not be used for easy coked medium.