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Flare Fittings

You won't find a better selection of flare fittings anywhere on the Internet. It is important to use flare fittings when you are dealing with a lot of water pressure going through a pipe or are dealing with high gas distribution. Flare fittings on the end of copper tubing should provide a strong connection to a fixed point with a threaded nipple.® is your source for hard-to-find fittings. And, as always, there is never a minimum purchase requirement.

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  1. Brass Flare Nut
    As low as $1.17
  2. Brass Flare x MIPS Adapter
    As low as $1.57
  3. Brass Flare Union
    As low as $1.72
  4. Brass Flare Female Swivel Nut
    As low as $5.19
  5. Brass Flare Tee
    As low as $4.27
  6. Brass Female x Male Flare Adapter
    As low as $6.52
  7. Brass Flare Cap
    As low as $1.25
  8. Brass Female Flare x MIPS Adapter
    As low as $8.34
  9. Brass Flare 90° Elbow
    As low as $4.13
  10. Brass Flare x FIPS Adapter
    As low as $2.66
  11. Brass Flare x FIPS 90° Elbow
    As low as $3.98
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Where do you use compression versus flare fittings?
We prefer flare with soft tubing over 3/8" OD in size and compression fittings on all hard copper and soft tubing 3/8" OD and smaller. Don't use compression fittings on gas connections at all as most codes do not allow it nor do we recommend it.
How can I measure my flare fitting to know if it is 15/16"-16 flare or another size?
The 15/16"-16 male flare thread measures 15/16" diameter from the outside of the male threads. The flare threads have 16 threads per inch. The actual opening through the fitting is 1/2" inside diameter for the gas to flow through. Gas appliance connectors larger than 1/2" O.D. use special flare fittings designed for gas use only.
Why shouldn't I use PTFE thread sealing tape or pipe joint compound on my flare threads?
PTFE tape and pipe joint compound (also known as "pipe dope") should only be used on "IPS" ("iron pipe size") threads, which are normal pipe threads. IPS threads make their seal along the threads themselves; when a piece of IPS-threaded pipe is screwed into a fitting, PTFE tape and/or pipe dope is used to assist that seal on the threads. Flare fittings, on the other hand, seal on the beveled ends of the fittings, and so using pipe dope or tape on flare threads could actually prevent the fittings from making an adequate seal.
Are these flare fittings suitable for natural gas connections?
Brass and copper pipe or tubing must not be used where the gas contains more than an average of 0.3 grams of hydrogen sulfide per 100 scf (standard cubic feet) of gas (0.7 mg/100) according to section 1208.5.2.3 of the 2012 Uniform Plumbing Code and section of the NFPA (National Fire Protection Association) fuel gas code. Since natural gas can contain some hydrogen sulfide, these brass flare fittings are not recommended. Galvanized and black steel pipe and fittings can be used if it is standard weight Schedule 40 or thicker.
Since these are brass fittings do they contain lead?
Most of these fittings do contain a very small amount of lead. Consider that for many years copper fittings and pipe were soldered together with 50% lead and now little lead may be used by law. Same with these brass fittings. There is a small amount of lead in them. The more acidic the water, the more tends to leach out. Should you be concerned? Some would argue that any amount is bad, and they would not use it for potable water. Others argue that plastics will be the new "asbestos" of the future. We don't know, and we cannot recommend these fittings for potable water; but we can say that we ourselves drink our own water from and through these fittings.