Double-Ferrule Instrumentation Tube Fittings

Double-FerruleInstrumentationTube Fittings

InterchangeabilityBrennan Double-Ferrule CompressionTube Fittings are manufacturedto be totally interchangeable and fullycomponent intermixable with theSwagelok and Parker A-LOK tubefitting brands.Brennan Double-Ferrule CompressionTube Fittings are totally interchangeablewith tube fittings of certain othermanufacturers including Parker CPITMand HOKE Gyrolok .2Swagelok is a registered trademark of Swagelok Company. A-LOK is a registered trademark and CPITM is a trademark of Parker Hannifin Corporation.Gyrolok is a registered trademark of HOKE Incorporated.

IntroductionBrennan’s Double-Ferrule Compression Tube Fittingsprovide leak-proof, torque-free seals at all tubing connections.They eliminate potentially hazardous and expensive leaks ininstrumentation, process, pneumatic, hydraulic, gas and othertubing systems.The basic Double-Ferrule Tube Fitting is a four-piece fitting consistingof the nut, back ferrule, front ferrule and the body. When installed, itbecomes a five-piece connection with the addition of the tubing to providea solid leak-free joint.The two ferrules grasp tightly around the tube with no damage to thetube wall. Exhaustive tests have proved that the tubing will yield before aBrennan Double-Ferrule joint starts leaking.The secret behind the success of the Brennan Double-Ferrule Tube Fittinglies in the two-ferrule design, which combines geometry and metallurgy.All action in the fitting is an axial movement along the tube instead of arotary motion to create the joint. This axial movement prevents transmission of any torque from a fitting to the tubing. Since there is no initialstrain in the tubing, the making of the joint does not weaken the tubing.Another advantage of the Brennan Double-Ferrule Tube Fitting is that theswaging action of the twin ferrules overcomes variations in tubing wallthickness, hardness and dimensional tolerance.Brennan’s Double-Ferrule Tube Fittings are easy to install and require nospecial tools. They are reusable several times and can withstand heavyimpulse and vibration in both vacuum and pressure systems.Brennan Double-Ferrule Compression TubeFitting Features: Self-aligning Work on thick and thin wall tubing Resist vibration Work on a variety of tube materials All components are made of the same material for thermalcompatibility and corrosion resistance Resist temperature cycling Compensate for the variables encountered in the tubeand materials Do not significantly reduce flow areaPerformance Work in vacuums, as well as at low and high pressures Seal at low cryogenic temperatures, as well as elevated temperaturesrated for the tube Seal consistently over a wide range of temperature cycling Seal repeatedly under both make and remake conditions Resist pressure beyond the tubing burst pointAssembly Use geometry rather than torque for uniformity of make-up. (To complete the joint, it requires only a 1-1/4 turn after snug-tightening.) Do not require disassembly and inspection of ferrule swaging at everymake-up Do not require any special tools for assemblyServiceBrennan’s Double-Ferrule Tube Fittings are available in a wide range ofmaterials, sizes, connections and configurations from our local distributors and supported by substantial inventories at our distribution centers.B r e n n a nI n d u st r iesAtlanta Cleveland Dallas Los Angeles Seattle3

Product GalleryPlugN0304NutPg. 12UnionN2403Pg. 14Pg. 17Port ConnectorN2431N2440Pg. 20Pg. 14Socket Weld MaleConnectorN2426N0319-BFront FerrulePg. 12Male ConnectorN2403Female Gage AdapterN2404Pg. 20N2427Pg. 15N2405Pg. 18N2428Reducing Port ConnectorUnion ElbowN2440N2500Pg. 20Socket Weld Male ElbowMale Branch TeeN2503N2525N2526N2601N2603Pg. 25Bulkhead Union ElbowN2701-LNPg. 29Positionable Male ElbowN6801Pg. 31Pg. 23Male Run TeeN2605Bulkhead

Tube Fittings are manufactured to be totally interchangeable and fully component intermixable with the Swagelok and Parker A-LOK tube fitting brands. Brennan Double-Ferrule Compression Tube Fittings are totally interchangeable with tube fittings of certain other manufacturers inclu