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.
Features: Working pressures up to 1000 psig (68.9 bar); Temperatures up to 900°F (482°C); 1/4, 3/8, 1/2, and 3/4 in.; 6, 10, and 12 mm end connections; Brass, stainless steel, and alloy 400 materials
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
Swagelok Resources Curated for You
Learn how to apply the practical STAMPED method to select the valves most suited to your industrial fluid or sampling system design applications.
Fugitive emissions are a growing concern in the chemical and petroleum refining industry. Certified low-emissions (Low-E) valves can protect your facility and bottom line. Learn what they are, how they are tested, and how they can help you in this post.
The isolation of industrial fluid system lines prior to maintenance is vital to plant safety. One of the safest ways to isolate a fluid system line is to install two block valves. Learn how to design proper configurations for your system.
Find out how the latest innovation in atomic layer deposition (ALD) valve technology is changing the game for high-tech semiconductor manufacturers.
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 coefficent ranges, and end connections provide multiple options for use in general and high-purity service.