The mud discharge valve is a critical component used in water treatment plants, specifically for discharging sludge and wastewater from the sedimentation tank. This valve features an angled design and incorporates a nylon-reinforced rubber diaphragm, ensuring long-lasting performance and durability. The main components of the mud valve include cast iron, stainless steel, and nylon-reinforced rubber, making it suitable for harsh environments.
The standard dimensions of the mud valve (with flange connections following GB4216) include various sizes such as H: 125, 145, 155, 175, 200, 225, 275, 325, 375 and DN: 50, 65, 80, 100, 125, 150, 200, 250, 300. These valves are commonly referred to as cover valves and are primarily used to remove sludge from the bottom of sedimentation tanks in municipal water plants and sewage treatment facilities.
The medium handled by the mud discharge valve is typically primary sewage, with a recommended operating temperature below 50°C and a working water depth of less than 10 meters. The valve is designed with several structural advantages, including a screw-type valve cover that allows direct operation via a handle, a tapered and arched valve plate that reduces the force needed to open the valve, and a tin bronze construction for the screw and sealing surfaces, which offers excellent resistance to corrosion and wear.
It can be operated manually or paired with a dual-purpose hoist for microcomputer control. When ordering, customers should specify the required depth (H value) to determine the connecting shaft length. While manual operation is standard, electric models are available upon request. Additionally, if special flange sizes are needed, they should be indicated during the order process.
There are two common types of mud discharge valves: hydraulic and pneumatic angle valves. The key feature of these valves is the use of a double-chamber diaphragm mechanism instead of a traditional piston, which eliminates mechanical wear and extends the service life. The valve consists of a hydraulic cylinder and an angle cut-off valve. The hydraulic system moves the flap, allowing the passage to open or close, enabling continuous fluid flow.
The piston seal in the hydraulic cylinder is an L-shaped bowl, providing excellent sealing and long-term durability. The valve disc and seat are soft-sealed, ensuring a tight closure with no leakage. The discharge valve can be controlled using either an electric or manual two-position four-way reversing valve, making it easy to operate and manage remotely.
The mud valve is installed in water treatment facilities to remove sediment from pools and tanks efficiently. It consists of a valve body, hydraulic cylinder, piston, stem, and disc. The hydraulic cylinder acts as a power source, with the piston and stem serving as control elements. The valve can be opened within one minute, and it requires a manual or solenoid valve for remote operation.
With strong sealing performance, flexible switching, and easy maintenance, the mud valve has a service life of more than five years. It is a reliable solution for sludge removal in water treatment applications. The valve is equipped with a piston that uses an L-shaped cup seal, offering excellent sealing and durability. The rubber-sealed valve pair ensures no leakage, and remote control is possible through an electric 2/2-way reversing solenoid valve.
Overall, the mud discharge valve is an essential part of the wastewater treatment process, offering efficient, safe, and durable operation in various industrial and municipal settings.
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