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, RL4 and KVV 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.
누출 저감(Low-E) 밸브로 비산 누출 비용 최소화
비산 누출은 화학 및 정유 산업에서 점점 더 큰 문제로 대두되고 있습니다. 인증 받은 누출 저감(Low-E) 밸브를 사용하면 시설과 수익성을 보호할 수 있습니다. 이 게시글에서 누출 저감 밸브가 무엇인지, 어떤 테스트를 거치는지, 플랜트에 어떻게 도움이 되는지 알아보십시오.
블록 밸브로 산업용 유체 시스템을 격리하는 방법
플랜트 안전을 유지하려면 유지보수 작업 전에 산업용 유체 시스템 라인을 격리하는 것이 필수입니다. 유체 시스템 라인을 격리하는 가장 안전한 방법은 블록 밸브 두 개를 설치하는 것입니다. 시스템에 적합한 구성을 설계하는 방법을 알아보십시오.
하나의 새로운 밸브, 반도체 제조 기술을 바꿀 수 있는 세 가지 이유
혁신적인 최신 원자층 증착(ALD, Atomic Layer Deposition) 밸브 기술이 어떻게 첨단 기술 반도체 제조 시장을 변화시킬 수 있는지 소개합니다.
비례식 릴리프 밸브
R 시리즈 비례식 릴리프 밸브는 다양한 액체 및 기체 일반 산업용 애플리케이션에서 간단하고 신뢰성 높은 과압 방지 기능을 제공하며, 10~6000 psig(0.7~413 bar)의 설정 압력을 지원합니다. 이 제품은 압력이 증가하면 점진적으로 열리며, 시스템 압력이 설정 압력 아래로 떨어지면 닫힙니다. PRV 시리즈 비례식 안전 릴리프 밸브는 다섯 가지 설정 스프링 압력 범위를 선택할 수 있는 인증된 안전 밸브이며, 원하는 설정을 보장할 수 있도록 선택한 설정 압력이 출고 시 설정 및 테스트되고, 잠금과 태그가 적용됩니다.
블리드 및 퍼지 밸브
Swagelok 블리드 밸브는 계장 제거 전 또는 제어 장치의 캘리브레이션을 진행할 수 있도록 신호 라인 압력을 대기로 벤트하는 데 사용할 수 있습니다. 수나사 NPT 및 SAE 연결구로 공급 가능합니다. 퍼지 밸브는 NPT, SAE, Swagelok® 튜브 피팅 또는 튜브 어댑터 연결구가 포함된 수동 블리드, 벤트 또는 드레인 밸브입니다.