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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.

世伟洛克阀门流量系数 (C<sub>v</sub>) 计算器

The Right Valve Can Make All the Difference

Use our valve flow coefficient (Cv) calculator to chose a valve sized correctly for your needs.

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Swagelok Resources Curated for You

How to Select the Right Valves for Your Industrial Fluid System

Learn how to apply the practical STAMPED method to select the valves most suited to your industrial fluid or sampling system design applications.

Minimize the Costs of Fugitive Emissions with Low-E Valves

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.

How to Isolate Industrial Fluid Systems with Block Valves

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.

应用于半导体行业的世伟洛克 ALD20 UHP 阀的无尘室组件。
One New Valve. Three Reasons It Could Change Semiconductor Manufacturing

Find out how the latest innovation in atomic layer deposition (ALD) valve technology is changing the game for high-tech semiconductor manufacturers.


Bellows-Sealed Valves

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.

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