Cast Steel Globe Valve is different from a common plunger valve, normal cut-off valve on the fill sealed the ordinary, the leakage of the phenomenon can not be ruled out, under the seal with the valve body by the flap valve plane or point of access seal (metal seal), due to metal sealing surface between the leakage caused by wear and tear, and maintenance difficulties. The structural characteristics of the plunger Valve by a stainless steel plunger, two from top to bottom and a flexible metal ring composed of the following frame, the effect of sealing ring by the plunger and to work closely with reached, the plunger inserted in the ring 2, the sealed area is much larger than the ordinary cut-off valve.Switch Valve plunger, the plunger in the ring in slow-moving, almost no surface wear, closed, piston ring, insert the following to cut off flow,open, the plunger from under the ring though, but still hidden in the ring, the isolation with the outside world, will not be leaked.
Ring technology products, is the key parts of the valve plunger, which is PTFE, graphite, plastic, such as high flexibility of the reciprocating motion by the millions of times the test can provide a good sealing performance.
At the same time, open the valve torque small, sealed area, the application of broad media to adapt to high temperatures, sealing reliable, long life, easy maintenance. Widely used in petroleum, chemical, power, pharmaceutical, food, textile, printing and dyeing, boilers, machinery and other industries.

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