Pneumatic valve flange gate

pneumatic valve flange gate is connecting method for pneumatic valve flange of the gate, this way of connection is the most common. Pneumatic valve in the pipeline flange gate is stable and reliable when using, so in the high pressure piping flange brake fault using pneumatic valve.
English name; Flange Gate Valve opening and closing of a ram, ram movement direction perpendicular to the direction of flow and the brake pneumatic Valve can only be fully open and close, not to adjust and throttling. Sealing face has two gate, two of the most commonly used model of pneumatic valve gate sealing surface form a wedge, the wedge Angle vary with parameters of pneumatic valve, usually, when the medium temperature is not high for ° '. Pneumatic wedge gate valve gate can be made into a whole body, is called a rigid disc; Can also make it generates trace of deformation of ram, in order to improve the manufacturability, make up for the sealing surface Angle in the process of our processing deviation, this damper is called elastic disc.
brake type of pneumatic valve, the sealing surface configuration can be divided into the wedge disc brake pneumatic valve, pneumatic valve and parallel disc brake wedge disc brake pneumatic valve can be divided into: single gate type, double disc and flexible disc; Parallel disc brake pneumatic valve can be divided into single ram and double ram. According to the threads of the pneumatic valve stem position, can be divided into pneumatic rising stem gate valves and pneumatic non-rising stem gate valve two kinds. This kind of pneumatic valves shall generally be installed in the pipeline.
brake pneumatic valve is closed, sealing surface can only rely on medium pressure to seal, that depend on medium pressure, the disc will be to the other side of the pneumatic valve seat sealing surface pressure to ensure that the seal face seal, this is the seal. Most brake is forced sealing pneumatic valve, pneumatic valve closing, namely to rely on outside force forced the ram pressure to the pneumatic valve seat, to ensure the sealing surface sealing.
brake of the pneumatic valve gate for linear motion with pneumatic valve stem, called pneumatic lifting lever gate valve ( Also called pneumatic valve stem gate) 。 Usually in lifting lever on the trapezoidal thread, through the nut at the top of the pneumatic valve and pneumatic valve guide groove, the rotary motion to linear motion, which is the operating torque thrust into operation.
when you start the pneumatic valve, pneumatic valve size when the gate hoisting height is equal to: times, fluid channels open completely, but at runtime, the position cannot be monitored. Actual use, is a pneumatic valve stem apex as a sign, that is fixed position, as its full open position. To consider locking phenomenon in a temperature change, usually in the open to the vertex positions, then rewind / - circle, as the position of the pneumatic valve fully open. Therefore, pneumatic valve in full open position, according to the location of the damper ( The itinerary & gt; To determine.
some brake pneumatic valve, pneumatic valve stem nut is located in the gate, the hand wheel rotation driven in pneumatic valve stem, and make the damper to ascend, the pneumatic valve is called rotating rod brake pneumatic valve or non-rising stem brake pneumatic valve.