世伟洛克® R 系列比例卸荷阀会随着压力的升高而逐渐开启，提供简单可靠的超压保护、保护工人安全并帮助维持适当的工艺条件。设定压力可以在出厂时进行配置，也可以在现场轻松调节，以适应不断变化的运行条件。世伟洛克® RV 系列中压卸荷阀可用于工作压力高达 20 000 psig (1378 bar) 的应用场合。
世伟洛克® PRV 系列比例安全卸荷阀已通过 PED 2014/68/EU IV 类认证，并依据 ISO-4126-1 标准作为安全阀，按照压力设备指令加贴了 CE 标志。这些阀门出厂时即已设置、测试、锁定并标记了设定压力。
世伟洛克® BV 系列排放阀可用于多阀阀组或压力表阀等仪表设备上，以便安全拆卸仪表并协助校准控制设备。这些阀门已获得符合 API 624 标准的低排放 (Low-E) 认证，以减少逸散性排放。
世伟洛克® P 系列吹扫阀是手动排放、放空或排空阀。为确保安全，滚花帽永久性地装配在阀体上，而且排放阀和吹扫阀均结构紧凑，便于安装。
是否想了解有关卸荷阀、排放阀或吹扫阀的更多信息？
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.
卸荷阀目录
查找详细的产品信息，包括结构材料、额定压力和温度、选购件及配件。
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.
世伟洛克为您精心准备的产品、服务和解决方案
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.
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
圧力逃がし弁 Rシリーズを使用すると、さまざまな液体またはガスの一般産業アプリケーションにおいて、容易かつ確実に過剰圧力を防止することができます（設定圧力：0.07 MPaから41.3 MPaまで）。圧力逃がし弁 Rシリーズは加わる圧力に比例して徐々に開き、システム圧力が設定圧力を下回ったときに閉じます。安全型圧力逃がし弁 PRVシリーズは、5つの設定スプリング圧力範囲を持つバルブで、認証を取得しています。指定の圧力を工場にて設定し、試験を行い、ロックし、希望の設定圧力を示すタグを付けています。
ブリード・バルブ／パージ・バルブ
Swagelokブリード・バルブを使用すると、計器を取り外す前のシグナル・ラインの圧力の大気中への排出や、制御装置の校正補助を行うことができます。エンド・コネクションは、NPTおねじまたはSAEおねじを選ぶことができます。Swagelokパージ・バルブはブリード・バルブ、ベント・バルブ、ドレン・バルブとして使用可能な手動式のバルブで、さまざまなエンド・コネクション（NPTねじ、SAEねじ、Swagelok®チューブ継手、チューブ・アダプター）を選ぶことができます。