Company Overview: Velan is a prominent manufacturer of industrial valves, including forged and cast steel gate, globe, check, ball, butterfly, and knife gate valves. These valves are crucial in industries such as chemical, petrochemical, oil and gas, power generation, pulp and paper, and cryogenics. Established in 1950, Velan is well-known for its valves used in nuclear power plants and the U.S. Navy.

Manufacturing and Global Presence: Velan operates 12 specialized plants globally, located in Canada, Korea, the U.S., France, the U.K., Portugal, and Taiwan, employing over 1,000 people in North America and 384 overseas.

Product Specifications: The catalog includes various valve types:

• Bellows Seal Technology: Features non-rotating stems, long cycle life, and hermetically sealed designs.
• Gate Valves: Available in compact forged and cast steel, sizes from 1/2" to 24".
• Globe Valves: Offered in forged and cast steel, sizes from 1/2" to 8".
• Ball Valves: Sizes range from 1/2" to 2".
• Control Valves: Available in sizes from 1/2" to 6".

Design Features and Testing: Velan's bellows seal valves are designed for high pressure and temperature applications, featuring multi-ply bellows for durability and secondary stem seals for protection. They undergo extensive testing, including helium leak testing and cycle life verification.

Applications: Velan valves are ideal for handling toxic and aggressive fluids, providing maintenance-free service for thousands of cycles. They are suitable for steam applications and challenging environments involving chemicals like acrylonitrile, ammonia, benzene, and chlorine.

Contact Information: Velan has sales offices and distributors worldwide. Customers can visit the Velan website or contact their local representative for inquiries.

Specifications: Bellows seal control valves feature hermetic sealing, long cycle life, and compliance with API and BS fire safety standards. They are designed for high performance with a unique bellows seal design, stainless steel driver unit, and secondary PTFE or graphite packing seal, tested for 100,000 cycles with zero ppm emissions.

Materials: Valves are made from high-grade materials like Hastelloy C for bellows, stainless steel for components, and PTFE for packing rings, ensuring compatibility with application fluids.

Design Features: Valves have an 'in-tension' seat design to compensate for wear and pressure/temperature fluctuations, a monitoring plug for detecting bellows failure, and allow for in-line disassembly. They come in various sizes and pressure classes, with options for pneumatic actuators and positioners.

Applications: Suitable for hazardous fluids, nuclear plants, accurate steam control, and cryogenic applications, these valves handle extreme temperatures and pressures, ideal for aerospace and superconductivity applications.

Ordering Information: A comprehensive guide is provided for ordering bellows seal valves, detailing connection types, sizes, pressure classes, valve types, body/bonnet styles, and materials, emphasizing the importance of specifying figure numbers.

References: The document lists companies and organizations using these valves, such as AIR-LIQUIDE, AEROSPATIALE, and ALSTOM, highlighting the product's widespread application and reliability.