Swagelok® Check and Excess Flow Valves
Swagelok inline check valves come in a range of adjustable and fixed cracking pressures to control back flow in general-service and high-purity applications. Excess flow valves enhance system integrity and safety by eliminating the need for a bypass mechanism.
Check Valves | Designed for fluid flowing in one direction
Excess Flow Valves | Stop the release of excess flow downstream
Swagelok® check valves are designed to allow fluids to flow in one direction only. Our check valves are available in a variety of designs, including poppet, lift, and all-welded versions for use in general-service or high-purity applications, including those featuring medium or high pressures.
Swagelok check valves are available with a variety of end connections and sealing materials, allowing users to find easy-to-integrate solutions compatible with their systems and process media. Certain Swagelok check valves feature all-welded designs to provide reliable containment of system fluid in high-purity applications, and some are composed of ultrahigh-purity fluoropolymer and feature no O-rings, maximizing flow while reducing pressure drop, eliminating no-flow areas, and providing excellent leak integrity.
Swagelok® XS series excess flow valves have a slotted poppet which moves to the tripped position when excess flow occurs downstream, stopping uncontrolled release of system media. They then reset when pressure equalizes. These valves eliminate the need for a complex bypass mechanism while reducing maintenance time.
Learn the differences between cracking pressure and resealing pressure to see if your check valve is working properly.
Catégories de clapets anti-retour
Clapets anti-retour en polymère très haute pureté, série CHP
Swagelok propose des clapets anti-retour en fluoropolymère (série CHP) qui empêcheront toute inversion de l’écoulement dans des applications très haute pureté.
Clapets anti-retour pour l’hydrogène
Enhance safety in hydrogen applications with Swagelok® hydrogen FK check valves, offering reliable shut-off, unidirectional flow, and high-pressure support.
Clapets anti-retour pour moyenne pression, série CV
Les clapets anti-retour pour moyenne pression sont conçus pour contenir la pression du système et contrôler les fluides afin d’empêcher toute inversion de l’écoulement.
Clapets anti-retour soudés haute pureté, série CW
La structure entièrement soudée des clapets anti-retour haute pureté offre un confinement parfait du fluide du système tandis que l’acier inoxydable 316L utilisé pour le corps permet de gagner en pureté.
Clapets anti-retour à levée verticale, série 50
Robustes et entièrement fabriqués en acier inoxydable, les clapets anti-retour à levée verticale limitent l’inversion de l’écoulement à des pressions allant jusqu’à 413 bar (6000 psig) et des températures allant jusqu’à 482°C (900°F).
Clapets anti-retour, séries C, CP et CH
Découvrez des clapets anti-retour en acier inoxydable ou en laiton proposés avec toutes sortes de raccordements d’extrémité et diverses pressions de tarage fixes ou réglables.
Clapets de sur-débit
Améliorez la sécurité des systèmes grâce aux clapets de sur-débit qui empêcheront l’écoulement incontrôlé d’un fluide si une ligne vient à rompre en aval.
Pièces détachées et accessoires
Découvrez des bouchons déflecteurs et explorez toute une gamme d’accessoires pour entretenir les clapets anti-retour, notamment des kits de remplacement de ressort, d’étanchéité et de clapet.
Check Valves Catalogs
Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.
Pressions de service jusqu’à 413 bar (6000 psig); Pressions de tarage réglables ou fixes; Divers raccordements d’extrémité; Matériaux en acier inoxydable 316 et laiton
■ Pressions nominales jusqu'à 4134 bar (60 000 psig)■ Dimensions des raccordements jusqu’à 1 1/2 po et 12 mm■ Produits conformes aux normes NACE® MR0175/ISO15156 disponibles
La conception entièrement soudée permet un confinement fiable du fluide du système., Le débit s’amorce à une différence de pression de moins de 0,14 bar (2 psig)., Le clapet se ferme avec moins de 0,14 bar (2 psig) de contrepression.
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
Les clapets anti-retour Swagelok à levée verticale® limitent le retour de débit pour des pressions allant jusqu’à 413 bar (6000 psig) et des températures allant jusqu’à 482°C (900°F).
Pressions jusqu’à 413 bar (6000 psig), Températures jusqu’à 204°C (400°F), Connexions de 1/8 à 1/2 po. et 6 à 12 mm, Construction en acier inoxydable
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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