It creates a seal to stop leakage. Parallel gate valves have two types: knife valves and through-conduits. The knife valve like Cast Steel Y Strainer carries a sharp bottom to take through any solids passing with the pipe. The through-conduit is rectangle shaped using a circular opening to allow for fluid to circulate when it is lowered.

Wedge-shaped gate valves enable the fluid to get tightly turned off and appear in three separate designs. The split wedge makes for disk flexibility. This flexibility helps the valve to seal easily. Solid wedges are quite obvious and strong. They are the most popular valve since they are suitable for nearly all situation. Flexible wedge valves are typically used for steam systems obtainable in a variety of sizes and shapes.

A close cousin in the gate valve, along with an ingenious variation, a butterfly valve can also can be found in many styles and sizes. Such a valve also operates using an interior gate. The difference between this and also a gate valve is with the way the gate operates inside valve.

The valve body material is divided into 2 types: carbon steel and alloy steel based on the pressure and temperature from the pipeline medium. Generally positioned in the valve of superheated steam system, t>450℃, the valve body's made of alloy material, for instance boiler exhaust valve. For valves placed in water supply systems or pipelines with medium temperature t≤450℃, the valve body material is usually carbon steel.

A knife gate valve operates by allowing thick media to only flow over soft seals without having interference. They work by chopping inside the media because it passes over the valve. Today knife gate valves are utilized in numerous processing plants worldwide and come in large sizes. This makes it easier to the valve to manage thick flows of media including grease, oils, slurry, waste water and paper pulp. Due to this, knife gate valves have low-pressure limitations and therefore are designed to seat the blade in a soft seal without any disruption.

The primary reason for choosing a knife gate valve is they are cost-effective, simple to actuate and lightweight. They are also very efficient in many industries and operations. Knife gate valves were designed having a sharp edge to cut over the pulp and seal.