text.skipToContent text.skipToNavigation
パージ・バルブ

Swagelok® Relief Valves

Proportional relief valves provide overpressure protection with a variety of set pressures available. For applications needing to drain signal line pressure to atmosphere, bleed and purge valves will manually bleed, vent, or drain that pressure.

Relief Valves Catalogs

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

バルブの流量係数(C<sub>v</sub>値)計算ツール

The Right Valve Can Make All the Difference

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

Use the Tool

Swagelok Resources Curated for You

流体サンプリング・システムに適したバルブの選定
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.

化学/石油精製業界におけるフュージティブ・エミッション(排出物の漏れ)を低減する
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.

一般産業用流体システムにおけるブロック・バルブ
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.

半導体業界向けの超高純度用(UHP)ALD20バルブのクリーンルームでの組み立て
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.

圧力逃がし弁/ブリード・バルブ

Proportional Relief, Bleed, and Purge Valves

Proportional Relief Valves

R series proportional relief valves provide simple, reliable, overpressure protection for a variety of liquid or gas general-industry applications with set pressures from 10 to 6000 psig (0.7 to 413 bar). They open gradually as the pressure increases and will close when the system pressure falls below the set pressure. The set pressure can be set at the factory or easily adjusted in the field. PRV series proportional safety relief valves are certified to PED 2014/68/EU Category IV, CE-marked in accordance with the Pressure Equipment Directive as a safety valve according to ISO-4126-1, and factory-set, tested, locked, and tagged with the set pressure.

Bleed and Purge Valves

Swagelok bleed valves can be used on instrumentation devices such as multivalve manifolds or gauge valves to vent signal line pressure to atmosphere before removal of an instrument or to assist in calibration of control devices. Male NPT and SAE end connections are available. Purge valves are manual bleed, vent, or drain valves with NPT, SAE, Swagelok tube fitting, or tube adapter end connections. A knurled cap is permanently assembled to the valve body for safety. Both bleed and purge valves are compact for convenient installation.