Flare Fitting Identification

External flare and solder connector.

Flare fitting identification. It is the dimension in 1 16 of an inch. Sae j512 inverted connections are typically used in automotive systems. Double end internal flare union. A 3 8 port would be 6 16 or a dash 6 6.

The threads maintain the connection mechanically. Flare unions are often used with forged nuts sold separately for extra security with gases and liquids. A fitting may also be referred to by its dash number. Custom tube and hose fittings are also available in various configurations including nptf jic sae gaz iso din jis and bsp.

Method of sealing differs. Tapered nose inside connector. Use long nut when excessive vibration may be encountered. Styles include o ring face seal flare male pipe metric designs and much more.

Double bevelled separate sleeve. Thread and connector identification jic 37 flare uno o ring boss threads jic is joint industries council sae j514 iso 8434 2 un is unified national sae j1926 iso 11926 2 jic uno o ring boss thread forms are the same asme b1 1. The dash number is a universal abbreviation for sizing pipe systems. The male connector is either a 45 flare within the tube fitting or a 42 seat in the machined adapter.

Flare fittings are a kind of compression fitting which is generally used with some kind of metal tubing often comprised of aluminum copper or soft steel although other metals are sometimes used as well. This lead free flare coupling or union is used this lead free flare coupling or union is used to join 2 pipes often in air or vacuum lines. The seal takes place by compressing the o ring onto the flat face of the female similar to the split flange type fitting. Seal cap for external flare end.

The dash number comes from the dimension of the port of the fitting. National pipe tapered fuel nptf national pipe straight mechanical nspm jic 37 flare sae j514 sae 45 flare sae j512 sae straight thread o ring o ring boss flareless compression sae j514 o ring face seal sae j1453 sae inverted flare sae j512. The following charts will show a dash number for each fitting. Brass sae 45 flare tube fittings.

Forged flare nut short flare swivel connection assembly. Type of fitting. Seal cap heavy duty seal plug for internal flare end. Double or din flare never use a single 45 degree flare with automotive nuts and fittings a 37 degree single flare is acceptable for use in an jic nuts and fittings with cunifer seamless tubing common crossthreads.

Use long nut for excessive vibration. It can be connected and disconnected unlike soldered fittings. Many manufacturers offer fitting wall charts as well to assist in the identification process. Brass is corrosion resistant.

Check that the flare is the correct profile for the components involved automotive fittings are always a 45 deg. Internal and external flare adapter. Not recommended on tin coated copper brazed steel tubing. Jic male has 37 flare which seals against 37 seat in female.