世伟洛克® 单向阀和过流阀
世伟洛克直通型单向阀含有一系列可调节和固定开启压力，可控制一般用途和高纯度应用中的回流。过流阀无需旁路机构，从而增强了系统的完整性和安全性。
单向阀 | 专为单向流动的流体而设计
过流阀 | 阻止下游过流时流体的释放
世伟洛克® 单向阀的设计旨在使流体仅能单向流动。我们的单向阀有多种设计类型，包括提升阀芯式、升降式和全焊接式型号，适用于一般用途或高纯的应用场景，包括中压或高压的工况。
世伟洛克单向阀有多种端接和密封材料可供选择，使用户能够找到与其系统和工艺介质相容的易于集成的解决方案。某些世伟洛克单向阀采用全焊接设计，以便在高纯应用中可靠地容纳系统流体，还有些单向阀由超高度含氟聚合物制成，不使用 O 型圈，在尽可能地提高流量的同时降低了压降，消除了无流动区域，并具备出色的防泄漏完整性。
世伟洛克® XS 系列过流阀配有开槽的提升阀芯，当下游出现过流情况时，阀芯会移动至触发位置，从而阻止系统介质不受控制地释放。然后，当压力平衡时，这些阀门会复位。这些阀门无需复杂的旁路机构，同时减少了维护时间。
了解开启压力与重新密封压力之间的差异，以判断单向阀是否正常工作。
Check Valve Categories
Excess Flow Valves
Enhance system safety by preventing uncontrolled release of system media if downstream line ruptures with excess flow valves.
High-Purity Welded Check Valves, CW Series
The all-welded design of high-purity welded check valves provides reliable containment of system fluid while the 316L SS body offers enhanced material purity.
Hydrogen Check Valves
Enhance safety in hydrogen applications with Swagelok® hydrogen FK check valves, offering reliable shut-off, unidirectional flow, and high-pressure support.
Lift Check Valves, 50 Series
Rugged, all-stainless steel lift check valves limit reverse flow under pressures up to 6000 psig (413 bar) and temperatures up to 900°F (482°C).
Medium-Pressure Check Valves, CV Series
The medium-pressure check valves are designed for system pressure containment and fluid control to prevent backflow.
Poppet Check Valves, C, CP, CH Series
Browse stainless steel and brass poppet check valves, available with a variety of end connections and adjustable or fixed cracking pressures.
Spare Parts and Accessories
Browse deflector caps and a variety of poppet check valve maintenance accessories—including spring, seal and poppet replacement kits.
Ultrahigh-Purity Polymer Check Valves, CHP Series
Our ultrahigh-purity fluoropolymer check valves meet SEMI Standard F57-0301 and provide low cracking pressure while maximizing flow and reducing pressure drop.
单向阀目录
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: Working pressures up to 6000 psig (413 bar); Adjustable and fixed cracking pressures Variety of end connections; 316 stainless steel and brass materials
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.
Features: All-welded design provides reliable containment of system fluid; Forward flow starts at less than 2 psig (0.14 bar) pressure differential; Valve closes with less than 2 psig (0.14 bar) back pressure; 316L SS body offers enhanced material purity
Features: Alloy 625, alloy 825, and Alloy 2507 super duplex stainless steel materials; Available for CH4 adn Ch8 series check valves; Working pressures up to 6 000 psig (413 bar); 1/4 to 1/2 in. Swagelok tube fitting or NPT end connections; Fixed cracking pressures: 1 to 25 psi (0.07 to 1.8 bar)
Features: Modified PTFE wetted components meet SEMI Standard F57-0301 for ultrahigh-purity system components; Fine thread flare and Nippon Pillar® Super 300 end connections; Low cracking and reseal pressure
Rugged, all-stainless steel construction; Reverse flow coefficient less than 0.1 % of forward flow coefficient; No springs or elastomers; Compact size
Stop uncontrolled release of system media if downstream line ruptures. Features: Pressures up to 6000 psig (413 bar); Temperatures up to 400°F (204°C); 1/8 to 1/2 in. and 6 to 12 mm end connections; Stainless steel construction
Calculate Flow Rate for the Right Valve Selection
Use our valve flow coefficient (Cv) calculator to chose a valve sized correctly for your needs.
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