Cast Iron Gate Valve

Cast iron gate valve is a shut-off valve made of cast iron as the main material. It can fully open or close the pipeline medium through the vertical lifting of the gate. It has the characteristics of low flow resistance, large valve body height, and long opening and closing time, but the maintenance convenience is poor. Its common models include ordinary wedge gate valves and knife-type gate valves, which are suitable for low pressure and normal temperature conditions.

Core structure and design

Valve body and flange:

The one-piece cast iron valve body design avoids the risk of valve body leakage and significantly reduces the aging problem of sealing gaskets;

The flange interface complies with the national standard (GB), American standard (Class 150) and other standards, and the diameter range covers DN15~DN800.

Gate type:

Ordinary wedge gate: suitable for clean fluids (such as water and steam), and the sealing surface relies on forced compression to achieve sealing;

Knife-type gate: specially designed for medium containing particles or high viscosity (such as sewage and pulp), which can cut off fibers and solid impurities.
‌Sealing system‌:

Soft seals (rubber, PTFE) are used in low-pressure and normal-temperature scenarios, while hard seals (metal cladding) are resistant to erosion but require regular maintenance.

 

cast iron gate valve

 

Applications
‌Municipal and environmental protection‌: Cut-off control of urban water supply and sewage pipes, suitable for media containing sediment or suspended matter; ‌
Industrial basic system‌: Opening and closing of low-pressure steam and cooling water circulation pipelines; ‌
Chemical and light industry‌: Management of non-corrosive fluids such as pulp and food processing

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