
Swagelok® Bellows-Sealed Valves
Swagelok bellows-sealed valves are designed to limit the potential for leaks, with many featuring a packless design or welded seals. They provide reliable, leak-tight performance in applications where the seal to atmosphere is critical to keep operators safe and processes functioning as intended.
View Bellows ValvesSwagelok bellows-sealed valves are available in a variety of styles and configurations, allowing users to find options that work well in their general and high-purity applications. Options include gasketed or welded body-to-bellows seals, stem tips for shutoff or regulating service, a variety of end connections, a wide range of flow coefficients, and panel or bottom mounting.
- Specialized Swagelok bellows-sealed valves with micrometer handles allow for precise, repeatable flow setting by allowing stem position changes in as little as 0.001 in. (0.025 mm) increments
- Compact Swagelok bellows-sealed valves for switching service allow for flow to be changed from one line to another using manual and spring-return or double-acting pneumatic actuators
- High-pressure, pneumatically actuated Swagelok bellows-sealed valves can handle elevated working pressures and temperatures to match process requirements
- Select Swagelok bellows-sealed valves feature a secondary containment system that prevents leaks to atmosphere even if the primary seal fails, enhancing reliability, versatility, and safety
Need help choosing bellows valves?
Bellows-Sealed Valves Categories

Bellows-Sealed Multi-Valve Manifolds, V3 Series
The Swagelok® 3-valve manifold uses bellows-sealed valves for systems with difficult fluid containment requirements.

Bellows-Sealed Valves for Switching Service, BY Series
Discover the BY Series Bellows-Sealed Valve for switching service. Compact, packless design with Torlon® stem guide for consistent shutoff.

General-Service Bellows Valves, B and H Series
Ensure reliable shutoff with precision-formed metal bellows valves with gasketed or welded body-to-bellows seals and stem tips for regulating service.

High-Pressure Bellows Valves, HB Series
Explore high-pressure, pneumatically actuated bellows-sealed valves with all-metal seal to atmosphere and with full pressure rating in either direction.

High-Purity Bellows Valves, BN Series
Discover high-purity valves with positive stem retraction, smooth actuation, and union bonnet construction for enhanced cycle life and cleanliness.

High-Temp Bellows Valves with Secondary Packing, U Series
Enhance reliability and versatility with Swagelok® U series bellows-sealed valves, which feature a secondary containment system that prevents atmospheric leaks.

Metering Bellows Valves, BM Series
Reliable metering bellows valves feature a hardened stainless steel actuator, six-turn max flow, and slotted handles for screwdriver adjustments.

Pneumatic Actuators
Enhance your system's performance with high-quality pneumatic actuators for bellows-sealed valves, designed for reliable and precise fluid control.

Spare Parts and Accessories
Find high-quality components designed for optimal compatibility. Spare parts and accessories for stem tip kits, bellows kits, indicator switch kits, and gasket kits.
벨로우즈 밸브 카탈로그
구성 부품의 재질, 압력 및 온도 등급, 선택 사양 및 액세서리를 포함한 상세 제품 정보를 찾아보십시오.
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.
Swagelok® BM series bellows-sealed metering valves use a micrometer handle for precise, repeatable flow settings at pressures up to 700 psig (48.2 bar) and temperatures up to 900°F (482°C).
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
Features: Packless valves with all-metal seal to atmosphere; Working pressures up to 500 psig (34.4 bar); Temperatures up to 200°F (93°); 1/4 to 1/2 in. and 6 to 12 mm end connections

귀하를 위해 선별된 스웨즈락 리소스

산업용 유체 시스템에 적합한 밸브 선택 방법
산업용 유체 혹은 샘플링 시스템 설계 애플리케이션에 가장 적합한 밸브를 선택할 때 유용한 STAMPED 방법을 어떻게 적용하는지 소개합니다.

누출 저감 밸브(Low-E Valve)로 대기 누출 비용 최소화하기
화학 및 석유 정제 산업에서 대기 누출에 대한 우려가 커지고 있습니다. 인증받은 누출 저감 밸브(Low-E Valve)를 사용하면 시설을 보호하고 비용적 손실을 예방할 수 있습니다. 이 게시글에서 누출 저감 밸브가 무엇인지, 어떤 테스트를 거치는지, 플랜트에 어떤 도움이 될지 알아보십시오.

블록 밸브를 사용하여 산업용 유체 시스템을 차단시키는 방법
유지보수 전 산업용 유체 시스템을 차단하는 것이 플랜트 안전을 위해 중요합니다. 유체 시스템 라인을 차단하는 안전한 방법 중 하나는 블록 밸브 두 개를 설치하는 것입니다. 스웨즈락이 올바른 구성을 설계하는 방법을 소개합니다.

하나의 새로운 밸브 반도체 제조를 바꿀 수 있었던 세 가지 이유
최근의 원자층 증착(atomic layer deposition, ALD) 밸브 기술 혁신이 하이테크 반도체 제조업체의 판도를 어떻게 바꾸고 있는지 알아보십시오.

벨로우즈 밸브
벨로우즈 밸브는 대기로의 밀폐가 특히 중요한 경우 대기중으로 누설을 방지하는 패킹이 없는 구조 및 용접된 밀폐로 신뢰할 수 있는 밀폐 성능을 제공합니다. 다양한 스타일, 스템 팁 재질, 유량 계수 범위 및 연결구가 일반산업 및 고순도 서비스에 여러 가지 옵션을 제공합니다.