Swagelok® Relief Valves
Swagelok® proportional relief valves provide overpressure protection in general industrial applications with a variety of set pressures available. Bleed and purge valves provide effective bleeding, venting, or draining of signal line pressure to atmosphere.
View Relief ValvesSwagelok® R series proportional relief valves open gradually as pressure increases, providing simple, reliable overpressure protection, protecting workers, and helping to maintain proper process conditions. Set pressures can be configured at the factory or easily adjusted in the field to suit changing operating conditions. Swagelok® RV series medium-pressure relief valves can be used in applications with operating pressures up to 20 000 psig (1378 bar).
Swagelok® PRV series proportional safety relief valves are certified to PED 2014/68/EU Category IV and CE-marked in accordance with the Pressure Equipment Directive as a safety valve according to ISO-4126-1. They are factory-set, tested, locked, and tagged with the set pressure.
Swagelok® BV series bleed valves can be used on instrumentation devices such as multivalve manifolds or gauge valves to allow safe removal of instruments and to assist in the calibration of control devices. They are available with low emission (Low-E) certification according to API 624 to combat fugitive emissions.
Swagelok® P series purge valves are manual bleed, vent, or drain valves. Knurled caps are permanently assembled to valve bodies for safety, and both bleed and purge valves are compact for convenient installation.
Want to know more about relief, bleed, or purge valves?
Relief Valve Categories
Bleed and Purge Valves, BV and P Series
Experience convenient installation with compact bleed valves for instrumentation devices and purge valves, such as manual bleed, vent, or drain valves.
Medium-Pressure Relief Valves, RV Series
Ensure over-pressure protection in general-industry applications with set or adjustable pressure and lock nut for stability.
Proportional Relief Valves, R3, R4, RL3, and RL4 Series
Discover high- and low-pressure proportional relief valves that open gradually as pressure increases. Suitable for liquid or gas service.
Proportional Safety-Relief Valves, PRV Series
Provides flexible, reliable over-pressure protection, certified under PED 2014/68/EU Category IV, and CE-marked according to ISO-4126-1.
Spare Parts and Accessories
Find spare parts and accessories for relief valves, including spring kits, seal kits, handle kits, insert kits, and poppet kits for optimal performance.
Relief Valves Catalogs
Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.
Features: Gas and liquid service; Working pressure: 6000 psig (413 bar); Set pressures from 145 to 6000 psig (10.0 to 413 bar); All 316L stainless steel construction; 1/4 through 1 in. NPT and ISO/BSP parallel thread end connections; Certified to PED 97/23/EC Category IV
Bleed Valves: Working pressures up to 10 000 psig (689 bar); Temperatures up to 850°F (454°C); 316 stainless steel, carbon steel, alloy 400, or alloy C-276 materials. Purge Valves: Working pressures up to 4000 psig (275 bar); Temperatures up to 600°F (315°C); 316 stainless steel, brass, or carbon steel materials
Features: Liquid or gas service; Set pressures from 10 to 6000 psig (0.68 to 413 bar); 1/4 and 1/2 in. and 6 to 12 mm end connections
Swagelok offers pressure-reducing, back-pressure, dome-loaded, and spring-loaded pressure regulators to control pressure and minimize droop in instrumentation systems.
Swagelok® offers medium- and high-pressure fittings, tubing, valves, and related accessories with temperatures up 1000°F (537°C), pressure ratings up to 60 000 psig (4134 bar) in sizes ranging from 1/4 to to 1 in. for medium-pressure products and 1/4 to 9/16 in. for high-pressure products. NACE® MR0175/ISO15156 compliance is available.
Calculate Flow Rate for the Right Valve Selection
Use our valve flow coefficient (Cv) calculator to chose a valve sized correctly for your needs.
Use the ToolSwagelok 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.
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.
비례식 릴리프, 블리드 밸ㅂ브 및 퍼지 밸브
비례식 릴리프 밸브
R 시리즈 비례 릴리프 밸브는 10~6000psig(0.7~413bar)의 설정 압력으로 다양한 액체 또는 가스 일반 산업 애플리케이션을 위한 단순하고 신뢰할 수 있는 과압 방지 기능을 제공합니다. 이 밸브는 압력이 증가함에 따라 점진적으로 열리며 시스템 압력이 설정 압력 아래로 떨어질 때 닫힙니다. 설정 압력은 공장에서 설정되거나 현장에서 쉽게 조절할 수 있습니다. PRV 시리즈 비례식 안전 릴리프 밸브는 PED 2014/68/EU 카테고리 IV 인증과, ISO-4126-1에 따른 안전 밸브로써 Pressure Equipment Directive에 따른 CE-마크 인증을 받았으며 설정 압력에 대해 공장에서 설정, 테스트, 잠금(Locking) 및 태그(Tagging)됩니다.
블리드 밸브와 퍼지 밸브
스웨즈락 블리드 밸브는 계기를 제거하기 전에 신호 라인 압력을 대기 중으로 벤트시키거나 조절 장치의 보정을 지원하기 위해서 멀티밸브 매니폴드 또는 게이지 밸브와 같은 계기 장치에 사용할 수 있습니다. 수나사 NPT 및 SAE 연결구 제공 퍼지 밸브는 NPT, SAE, 스웨즈락 튜브 피팅 또는 튜브 어댑터 연결구를 갖는 수동 블리드, 벤트 또는 드레인 밸브입니다. 널드(Knurled) 캡은 안전을 위하여 밸브 몸체에 영구적으로 조립되었습니다. 블리드 밸브와 퍼지 밸브 모두 편리한 설치를 위해 컴팩한 구조입니다.