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Swagelok® Diaphragm-Sealed Valves

Diaphragm-sealed valves minimize entrapment areas and facilitate purging with a fully swept flow path to improve system efficiency while providing effective flow shutoff. A variety of sizes, materials, and configurations, including atomic layer deposition, thermal immersion, and springless, meet the system requirements of high-purity and ultrahigh-purity applications.

Diaphragm-Sealed Valves Catalogs

Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.

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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

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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.

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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.

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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.

반도체 산업용 스웨즈락 ALD20 UHP 밸브의 클린룸 조립
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.

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Diaphragm-Sealed Valves

Our diaphragm-sealed valves are designed in a wide variety of sizes, materials, and configurations to meet the needs of high-purity and ultrahigh-purity (UHP) applications with flow coefficients from 0.20 up to 13 and working pressures up to 3500 psig (241 bar).

Diaphragm-sealed valves provide effective shutoff for your system flow and have a long cycle life. Swagelok’s diaphragm-sealed valve offerings include atomic layer deposition (ALD), springless for high-flow, high-performance, and modular gas systems, thermal-immersion, and ultrahigh-purity fluoropolymer. Manual, pneumatic, and locking actuator options are available.

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