J45H-150LB American standard forged steel Y-type globe valve

材质：

碳钢、不锈钢

规格：

15-100

温度：

425度

< r/ Forged steel stop valve/> Product name:

Forged steel stop valve (DC stop valve)
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: Product model:
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: Nominal pressure:
~

B~B

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: Valve body material: carbon Steel Stainless Steel Chromium Molybdenum Steel Low Temperature Steel
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Overview of Forged Steel Stop Valve
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Forged Steel Stop Valve The valve stem and the channel are at a certain angle, and the valve seat sealing surface is also at a certain angle with the inlet and outlet channels.

The forged steel stop valve allows the fluid to hardly change the flow direction of the medium. The least resistance.

Forged steel globe valve
Due to the small friction between the sealing surfaces during the opening and closing process, it is relatively durable, has a small opening height, is easy to manufacture, and is easy to maintain. It is not only suitable for medium and low pressure, but also Suitable for high pressure.
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Design styles of forged steel globe valves:
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There are three types of valve covers for forged steel valves Design form: The first is a bolted valve cover
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For valves designed according to this design form
, the valve body and the valve cover are connected with bolts and nuts, and sealed with a wound gasket. Metal ring connection can also be used when customers have special requirements. The second design form is the welded valve cover. For valves designed in this design form, the valve body and the valve cover are threaded, and the internal pressure self-sealing ring seals.
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Working principle of forged steel stop valve:
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Forged steel
Stop valve The closing principle is to rely on the valve rod pressure to make the valve disc sealing surface and the valve seat sealing surface closely fit to prevent the flow of media.
Forged steel
The stop valve only allows the medium to flow in one direction and has directionality during installation.
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Forged steel
The stop valve is a forced sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the valve stem The diameter should be larger. In recent years, with the emergence of self-sealing valves, the medium flow direction of the stop valve has been changed from the top of the valve disc into the valve chamber. At this time, under the action of the medium pressure, the force to close the valve is small, but the force to open the valve is large, and the force of the valve stem The diameter can be reduced accordingly. At the same time, under the action of the medium, this form of valve is also tighter.
Forged steel stop valve
When the stop valve is to be installed horizontally, the opening height of the valve disc is
%
~
%
of the nominal diameter. , the flow rate has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the fully open position of the stop valve should be determined by the stroke of the valve disc.