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。
单向阀类别
Hydrogen Check Valves
Enhance safety in hydrogen applications with Swagelok® hydrogen FK check valves, offering reliable shut-off, unidirectional flow, and high-pressure support.
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.
中压单向阀，CV 系列
The medium-pressure check valves are designed for system pressure containment and fluid control to prevent backflow.
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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