Gate valve flange end ANSI CLASS 150 300

Gate valve opens shuts is the damper plate, the damper plate heading and the fluid direction is vertical, the gate valve only can do all starts with the entire pass, cannot make the adjustment and the throttle.The damper plate has two packing surfaces, but the most commonly used pattern gate valve two packing surfaces form, the wedge-shaped angle wedge-shaped along with the valve parameter different, usually is 50, medium temperature not Gao Shiwei 2°52'.The wedge type gate valve damper plate may make a whole , the named rigid damper plate; Also may make can produce the micro distortion damper plate, improves its technology capability, the atonement packing surface angle the deviation which produces in the processing process, this kind of damper plate named elastic damper plate.The stainless steel gate valve material quality divides into 304 stainless steel gate valves, 316 stainless steel gate valves, 321 stainless steel gate valves.Expressed the method is: Z41H-16P.

Principle of work :

The gate valve damper plate makes the translation together along with the valve lever, is called the lifter gate valve ( also to be called the bright pole gate valve).Usually has the acme thread on the lifter, through in the valve peak nut as well as the valve chest guide channel, the rotary motion will become the translation, also will be operates the torque to become the operation thrust force.The packing surface may only depend upon the medium pressure to seal, namely the dependence medium pressure presses the damper plate packing surface to another one side valve seat guaranteed the packing surface the seal, this is from the seal.The majority of gate valves use the compulsion seal, when namely the valve shuts down, must depend upon the external force to press forcefully the damper plate to the valve seat, guarantees the packing surface the leak-proof quality.

Features:

1.1/2~12(DN15~DN300)

2.W.P.:CLASS 150/300

3.W.T.:-425℃

4.Rising stem

5.Design:ASME B16.34,API600.API603

6.Flange dimension:ASME B16.5

7.Face to face:ASME B16.10

8.Inspection & testing:API600/API603/ASME16.34

Form explanation:

Unit:mm

|205|

|333|

|334||335|

|336||337|