Advantages And Performance Of Forged Steel Stop Valve

The opening and closing parts of the forged steel stop valve are plug-shaped discs, the sealing surface is flat or conical, and the disc moves linearly along the center line of the fluid.

The movement forms of the valve stem of the forged steel stop valve include lifting rod type (the valve stem lifts and the hand wheel does not lift and lower), and lifting and rotating rod type (the hand wheel and the valve stem rotate and lift together, and the nut is set on the valve body). The function of the forged steel stop valve is only applicable to full opening and full closing, and adjustment and throttling are not allowed. This is mainly determined by the characteristics of the forged steel stop valve.

The obvious advantages of the forged steel stop valve are:

During the opening and closing process of the forged steel stop valve, the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, so it is wear-resistant.

The opening height of the forged steel stop valve is generally only 1/4 of the diameter of the valve seat channel, so it is much smaller than that of the gate valve.

Forged steel stop valves usually have only one sealing surface on the valve body and the disc, so the manufacturing process is relatively good and easy to maintain.

The performance of Forged Steel Globe Valve mainly plays the role of cutting off the pipeline medium. Compared with gate valves, it has better regulating performance, small opening height, short closing time, convenient manufacturing and maintenance, and the sealing surface is not easy to wear and scratch. It has good sealing performance and long service life. The valve body structure design of forged steel stop valve is relatively tortuous, so the flow resistance is large and the energy consumption is large. It is suitable for steam, oil and other media, but not suitable for media with high viscosity, particles, easy coking and easy precipitation.

Medium and high pressure forged steel stop valves and large diameter forged steel stop valves can adopt balanced structure. The extended product of forged steel stop valve - throttle valve, controls the pressure and flow of the medium by changing the flow channel section. Except for the streamline cone shape of the opening and closing parts, most of them are the same as forged steel stop valves.

When the forged steel stop valve is opened, the opening height of the valve disc is 25% to 30% of the nominal diameter, and the flow rate has reached a large level, indicating that the valve has reached the fully open position. Therefore, the fully open position of the forged steel stop valve should be determined by the stroke of the valve disc.