The purpose of plunger valve

Plunger valve is closed a cylindrical, close it is along with the valve seat hole axis parallel to the direction of the valve gate, mainly for cutting the pipe lines. Plunger valve mechanism is simpler, it relies on the outer surface of the plunger valve and the pressure inside the sealing ring of closely to cut off the medium surface, when the plunger valve up out of the valve seat hole of channels, and road medium can flow. As a result of the plunger valve sealing ring is usually made from flexible graphite, ptfe etc. Nonmetal materials, plunger valves and convenient for machining of cylindrical surface, therefore, sealed performance is good, also facilitate maintenance and replacement, long service life. Plunger valve body and cut-off valve, fluid resistance is big, poor flow capacity, commonly used in medium and low pressure valve door in medium and small diameter tube road. Threaded or socket weld connection cut-through plunger valve as shown in figure 2 - price form 47. Flange connection pressure balance cut-through plunger valve institutional form - as shown in figure 2 48. Cut-off valve as shown in figure 2 - shape of the plunger valve institutions 49. Flange connection double valve seat pressure balance cut-through plunger valve institutional form - as shown in figure 2 50. Flange connection right Angle type plunger valve institutions form - as shown in figure 2 51. Flange connection pressure balance Angle type plunger valve institutions form - as shown in figure 2 52.