Z11 Stainless Steel Wire Buckle Gate Valve

z11 stainless steel wire-button gate valve opening and closing member is a plug-shaped valve flap, the sealing surface is flat or conical, the valve flap along the center line of the fluid for linear movement. The form of movement of the valve stem, there is a lifting stem type (stem lifting, handwheel does not lift), there is also a lifting rotating stem type (handwheel and stem together with rotating lifting, nut is located in the valve body). Textured pipe globe valve is only applicable to fully open and fully closed, not allowed for regulation and throttling. This type of valve in the pipeline should generally be installed horizontally.

Stainless steel wire-button gate valve, female threaded gate valve, high-pressure gate valve, grain pipe globe valve belongs to the mandatory sealing valve, so when the valve is closed, the valve must be applied to the valve flap pressure, in order to force the sealing surface does not leak. When the medium from below the valve flap into the valve six, the operating force needs to overcome the resistance, is the friction of the valve stem and packing and the pressure generated by the medium of the thrust, the force to close the valve is greater than the force to open the valve, so the diameter of the valve stem should be large, otherwise it will occur the stem top bending of the fault. In recent years, from the emergence of self-sealing valves, globe valves, the flow of media from the valve above the valve into the valve cavity, then under the action of medium pressure, the force off the valve is small, and open the valve force is large, the diameter of the valve stem can be reduced accordingly. At the same time, under the action of the medium, this form of valve is also more tight. China's valve "three to" had stipulated that the flow direction of the globe valve, always use the top-down.

Female gate valve opening, the opening height of the valve flap, 25% to 30% of the nominal diameter, the flow rate has reached the maximum, indicating that the valve has reached the fully open position. So the full open position of the globe valve, should be determined by the valve flap travel.

z11 stainless steel wire-button gate valve has the following advantages:

1, the structure is simple, manufacturing and maintenance is relatively convenient.

2, small working stroke, short opening and closing time.

3, good sealing, small friction between sealing surfaces, longer life.

1, the fluid resistance is large, the force required for opening and closing is larger.

2, does not apply to with particles, viscosity, easy to coking media.

3. Poor regulation.