Swagelok® Bellows-Sealed Valves
Bellows valves use a packless design and welded seal to prevent leaks to atmosphere in general and high-purity service with a variety of flow coefficient and stem tip material options.
Bellows-Sealed Valves Catalogs
Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.
Swagelok® B series bellows-sealed valves are available in a range of configurations to meet a variety of system needs. Gasketed and weld body-to-bellows seals, shutoff and regulating stem tips, and several end connections are offered.
Features: Micrometer handle for precise, repeatable flow settings; Working pressures up to 700 psig (48.2 bar); Temperatures up to 900°F (482°C); 316 stainless steel construction
Features: Compact size; Working pressures up to 1000 psig (68.9 bar); Temperatures up to 600˚F (315˚C)
Features: Compact, packless valve switches flow from one line to another. Torlon® stem guide ensures proper alignment for consistent shutoff performance. Manual and spring-return and double-acting pneumatic actuators are available. End connections include 1/4 in. Swagelok® VCR® metal gasket face seal fittings and 1/4 in. Swagelok tube fittings.
Packless valves with all-metal seal to atmosphere; Working pressures up to 3500 psig (241 bar); Temperatures up to 400°F (204°C); VCR® face seal fitting, Swagelok® tube fitting, and weld end connections
Features: Secondary containment system above the bellows; Working pressures up to 2500 psig (172 bar); Temperatures up to 1200°F (648°C); 1/4, 3/8, 1/2, 3/4, and 1 in.; 6, 10, and 12 mm end connections; Stainless steel material
The Right Valve Can Make All the Difference
Use our valve flow coefficient (Cv) calculator to chose a valve sized correctly for your needs.Use the Tool
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Bellows valves provide reliable, leak-tight performance with a packless design and welded seal to prevent leaks to atmosphere where that seal to atmosphere is especially critical. A variety of styles, stem tip materials, flow coefficient ranges, and end connections provide multiple options for use in general and high-purity service.