The design and structural characteristics of forged steel gate valves are mainly reflected in the following aspects:

Design Features

Application and medium adaptability:

Forged steel gate valves are mainly used to cut off or connect media in pipelines, suitable for the working pressure range of Class 150~2500, as well as the working temperature range of -29~425 ℃ (carbon steel) or -29~500 ℃ (stainless steel).

Different materials can be selected to adapt to various media such as water, steam, oil, acetic acid, oxidizing media, urea, etc.

Sealing performance:

The sealing surface of forged steel gate valve is less susceptible to erosion and erosion by the medium, with good sealing performance and long service life.

When fully open, the sealing surface is less eroded, ensuring good sealing effect.

Fluid resistance:

The internal medium channel of the forged steel gate valve body is straight through, and the flow direction of the medium through the gate valve does not change, so the fluid resistance is small.

Structural characteristics

Valve cover design:

Bolt valve cover: The valve body and valve cover are connected by bolts and nuts, and sealed with wrapped gaskets (such as 316 clamps made of flexible graphite).

Welded valve cover: The valve body and valve cover are connected by threads and fully welded for sealing.

Pressure self tightening valve cover: The valve body and cover are connected by threads and sealed with an internal pressure self sealing ring.

Gate and valve body:

The gate is vertically placed inside the valve body, with a relatively short structural length.

There is no relative sliding between the gate and the sealing surface of the valve body, so wear and abrasion are not severe.

Overall structure:

Forged steel gate valves have a simple shape, short structural length, good manufacturing processability, and a wide range of applications.

Most forged steel gate valves are designed with reduced diameters, which result in slightly lower flow rates compared to cast steel gate valves of the same diameter. However, they can withstand higher pressure and temperature ranges, and have better sealing performance.

matters needing attention

When installing forged steel gate valves, their installation position, height, inlet and outlet directions must meet the design requirements, and the connections should be firm and tight.

Before installing the valve, a visual inspection must be conducted to ensure that the valve nameplate complies with current national standards.

For valves with a working pressure greater than 1.0 MPa and a cutting effect on the main pipeline, strength and tightness tests should be conducted before installation, and they can only be used after passing the tests.

In summary, forged steel gate valves play an important role in cutting off or connecting media in pipelines due to their unique design and excellent structural characteristics. Meanwhile, it is also necessary to pay attention to the relevant installation and maintenance requirements during use to ensure its normal operation and extend its service life.