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.
水素燃料電池自動車向けに最適なコンポーネントを選定するには
水素輸送は、信頼性の高いコンポーネントの選定が鍵を握っているといっても過言ではありません。
導入事例：オフショア・オイルのオペレーター
既存のコーン＆スレッド継手をSwagelok FKシリーズ継手に置き換えたことで、オフショア・オイルのオペレーションにおける取り付け時間を短縮し、全体的なパフォーマンス向上を実現することができました。
Empa、スウェージロックとの共同研究により、水素輸送の革新的な技術開発を実現
スイス連邦材料試験研究所（Empa）は、スウェージロックと共同で水素を利用した輸送ソリューションの実現可能性について研究しています。最近の研究成果として、Swagelok FKシリーズ継手をEmpaの水素ソリューションに採用したことが挙げられます。従来のSwagelokチューブ継手の代わりにFKシリーズ継手を使用したことで、取り付け作業が大幅に簡素化され、気密性、信頼性、安全性が向上しました。
ミディアム・プレッシャー・チューブ継手 FKシリーズ
初期建設・試運転から日々のオペレーションやメンテナンスに至るまで、総ライフサイクル・コストの削減が重要視されています。適切な手順に従ってFKシリーズ・チューブ継手を取り付けることで、メンテナンス・コストの削減および高い信頼性を実現し、システムのダウンタイム（停止時間）を短縮することができます。また、漏れを削減することで環境影響が抑えられるほか、システムを腐食から保護して全体的な安全性を向上させることも可能です。