45 Degree Flare Fittings

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Ideal For High Pressure Service

Flared fittings make joints which are well adapted to high pressure service and have exceptional resistance to mechanical pull out.  They are especially adapted for use where a joint is to be subject to periodic disassembly as they will give repeated tight connections.  The positive nature of the joint, with the flare on the tube clamped between the nut and the body, makes for extreme dependability and safety. Introduced by Imperial in 1905, the flare fitting became the industry standard for a two piece fitting.

 

Single or Double Flares

 

Tubing may be either “single” or “double flared” for maximum reliability.  When working with Bundy steel or similar tubing, the double flare is recommended to ensure against cracking or splitting of the tubing in flaring.  Single flares are most commonly used today in connecting copper and aluminium tubing.

 

One of the advantages of a double flare is that an effective seal is secured with specified wrench torques, and yet maximum wrench torques for single flares can be exceeded by a considerable margin without “washing out” or “ironing out” the flare. The double flare compensates for this over torquing while maintaining a reliable seal. The double flare is also desirable for tubing joints which must be taken apart and reassembled frequently, especially on tube size 3/8” O.D or smaller.

 

Applications  

Widely used on high, medium, and low-pressure lines where excessive vibration or tube movement is not involved.  Proven on mobile equipment, machinery, air compressors, oil burners, refrigeration, air conditioning, marine and LP gas applications.

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Technical Information

 

Construction

  • Two piece: body and nut

  • Shapes: brass, forged SAE CA377 or equivalent

  • Connectors, Unions, Nuts: brass, SAE CA360 or equivalent

  • 45° Flared

 

Conformances

  • S.A.E.: Meets SAE  J512 and J513 Automotive tube fitting standards

  • ANSI B31.1 and B70.1

  • ASME Boiler and Pressure Vessel Code

 

Tube Sizes

  • Tube 1/8” to 7/8” O.D

  • Pipe Thread: 1/8” to 3/4” NPTF

 

Pipe Threads

  • Long Length Dryseal American (National) Standard Taper Pipe Threads (NPTF)

 

Working Pressure

  • Nominal: 225 psi

  • Maximum: 2,850 psi

 

Compatible Tubing

  • Copper

  • Aluminium

  • Seamless Steel

  • Brass

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