Swagelok® Medium-Pressure Tube Fittings (FK Series)
Swagelok FK series medium-pressure fittings have improved fluid connections in tough applications like oil and gas exploration, R&D systems, and the hydrogen market. They offer reliable, leak-tight connections for advanced systems in fluid handling and gas sealing applications.
View All Medium Pressure Tube FittingsSwagelok® FK series medium-pressure fittings install up to five times faster than cone and thread fittings, reducing installation time, assembly, and maintenance costs. The fittings are vibration-resistant and offer a leak-tight gas seal for applications up to 20 000 psig (1378 bar). Ideal for use in challenging environments where secure, high-pressure connections are critical.
These medium pressure fittings are reliable and efficient, offering robust performance in severe applications while protecting workers and the environment. They meet EC-79 standards for hydrogen applications up to 700 bar (10 150 psig) and feature a preassembled cartridge for easy, accurate installation. The simple two-piece design, with color-coded ferrules, ensures proper orientation and installation using standard tools. The strain-hardened 316 stainless steel body provides a lightweight, space-saving solution. FK series fittings are also available in NACE MR0175/ISO 15156 compliant versions.
Medium-Pressure Tube Fitting Categories
Bulkheads
Make reliable fluid transfers with a bulkhead designed specifically for passing a tubing connection through a panel or steel partition.
Caps and Plugs
Pressurize the fluid system by capping medium-pressure connections or plugging ports.
Female Connectors
Create a secure connection with female connectors for tube fittings, designed to receive and hold male connectors.
Male Connectors
Construct a leak-free connection in process instrumentation and industrial applications with a male connector for medium-pressure tube fittings.
Spare Parts and Accessories
Nut and ferrule sets and medium-pressure gap inspection gauges for tube fittings.
Unions
Combine tubing easily with an elbow, tee, or straight union, available in 316 stainless steel for medium-pressure tube fittings.
Medium-Pressure Tube Fittings Catalogs
The strain-hardened 316 stainless steel FK fitting bodies are available in straight, elbow, and tee shapes to meet your configuration needs in a lightweight, space-saving design. Find detailed product information, including materials of construction, pressure and temperature ratings, options, accessories, and installation instructions in the product literature provided here.
FK and IPT Series Products Cone and thread or medium-pressure tube fitting connections Excellent corrosion resistance in chloride-containing environmentsManufactured to meet NORSOK and NACE® MR0175/ISO15156
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.
Tube Fittings Comparison (FK Series)
Watch and compare installation of FK series and cone and thread fittings.
Compare the FittingsSwagelok Resources Curated for You
AGI Industries
Read how Swagelok helped AGI Industries achieve leak-free performance at 15 000 psi for 13 500 potential leak points with Swagelok FK series valves and fittings.
Optimizing Component Selection for Hydrogen Fuel Cell Vehicles
Hydrogen transportation depends on reliable component specification and selection.
Étude de cas : Opérateur de plateforme offshore
Découvrez comment Swagelok a aidé un opérateur pétrolier offshore à réduire le temps d’installation et à améliorer les performances globales en remplaçant les raccords filetés à extrémité conique par des raccords Swagelok de la série FK.
La recherche collaborative de l’Empa et de Swagelok stimule l’innovation dans le domaine du transport à l’hydrogène
Le Laboratoire fédéral suisse d’essai des matériaux et de recherche (Empa) et Swagelok étudient la viabilité des modes de transport basés sur l’hydrogène. Une avancée récente issue de notre collaboration a consisté à incorporer les raccords Swagelok de la série FK dans la solution mise au point par l’Empa. L’utilisation de raccords série FK au lieu des raccords pour tubes Swagelok traditionnels a considérablement facilité l’installation, tout en améliorant l’étanchéité, la fiabilité et la sécurité des systèmes.
Raccords pour tubes moyenne pression série FK
De la construction à la mise en service en passant par l’exploitation et la maintenance au quotidien, réduire le coût total du cycle de vie est une préoccupation constante. Les raccords pour tubes série FK permettent de réduire les coûts de maintenance et sont d’une grande fiabilité – ce qui limite les immobilisations – lorsque les procédures d’assemblage sont respectées. Ces raccords peuvent également aider à atténuer l’impact environnemental de votre système en réduisant les fuites et améliorer globalement la sécurité en protégeant le système contre la corrosion.