Pneumatic valve gate structure

the pneumatic valve structure decides the pneumatic brake valve body, the body and pipe, pneumatic valves and pneumatic valve cover structure, manufacturing methods, casting, forging, forge welding, casting and tube sheet welding, several welding.
from economic considerations, usually through pneumatic valve is equal to or higher than the casting using forged adopted less than mm, mm bigger name. However, with the modern foundry, forging technology has been gradually break through the limit. Pneumatic valve has made large diameter direction, while the actor's body gradually to the development of small diameter. Pneumatic valve pneumatic valve forged steel gate can be any kind of, also can cast, should be based on user requirements and the manufacturer has the ability to produce can.
the pneumatic valve pneumatic brake valve pneumatic valve port flow
door, can be divided into, full size and reducing two types. Flow and the pneumatic valve, basically determines the path to the nominal diameter of the same type; Flow pneumatic valve is not as a ceremony called necking nominal diameter smaller. Unified shape neck neck neck uniforms and fees. Traffic is tapered tube, it is a non-uniform shrinkage, and the pneumatic valve inlet aperture is basically the same nominal diameter, then gradually decreases, and reduced to a minimum.
use of runoff path ( Both conical heterogeneous or homogeneous neck neck) , for the same specifications of the pneumatic valve advantages, can reduce the door opening and closing force and torque size, defect is increased resistance to flow, pressure drop, increase energy consumption, so shoulds not be too great contraction. Necking of the cone, the diameter of the seat and the ratio of the nominal diameter, usually. To. 。 Nominal diameter larger than mm diameter to reduce pneumatic valve, pneumatic valve seat diameter is generally less than the nominal size of the file to reduce nominal mm diameter equal to or greater than reducing pneumatic valve, pneumatic valve seat diameter is generally greater than the second low nominal diameter file.