A bellows gate valve is a type of valve designed for zero-leakage applications, featuring a metal bellows as the primary sealing element. The bellows provide a hermetic seal, preventing fluid from escaping around the valve stem. It is commonly used in high-pressure, high-temperature, or hazardous environments, such as in oil and gas, chemical, and power industries. The valve typically has a wedge-shaped gate for tight shut-off and is constructed from durable materials like stainless steel for corrosion resistance. Its robust design ensures long service life, low maintenance, and reliable performance in critical systems where leakage prevention is essential.
Valve body: usually made of cast steel, stainless steel and other materials, resistant to high pressure and corrosion.
Bellows assembly: metal bellows as the main seal to prevent medium leakage.
Wedge gate: wedge design to ensure tight sealing when the valve is closed.
Valve stem: connects the operating device and the gate to transmit the operating force, usually made of stainless steel.
Flange: used to connect the pipeline to ensure stable installation.
Operating device: supports manual, electric or pneumatic operation, flexible and convenient.
Bellows seal: metal bellows is used as the main sealing element to achieve double sealing and ensure zero leakage.
Flange connection: flange design, stable installation, suitable for high-pressure and high-temperature pipeline systems.
Wedge gate: wedge gate design, excellent sealing performance, suitable for high-pressure difference conditions.
High temperature and high pressure resistance: high-quality materials are used to withstand high temperature and high pressure environments.
Long life: bellows and valve body materials are corrosion-resistant and wear-resistant, with a long service life.
Low maintenance: simple structure, easy maintenance, and reduced downtime.
Petrochemical, chemical fiber textile, power plant, steel plant, plastic papermaking, hot oil system, steam system, hot and cold water system and other industries and working conditions.
Bellows-sealed flange wedge gate valves are widely used in harsh working conditions due to their excellent sealing performance, high temperature and high pressure resistance and long service life. The bellows sealing technology ensures zero leakage and the flange connection method is stable for installation, making it an ideal choice for industries such as petroleum, chemical industry, and electric power. Correct selection, installation and maintenance are the key to ensuring its efficient operation.
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