Definitely not. Flare fittings do not seal on the thread; they seal on the tapered face only.
What is better flare or compression fittings?
Generally speaking, compression outlets are used for water and compressed air lines, where slight leakage isn’t going to cause too much of a problem. Flared outlets are used for gas and high-pressure lines, where even a little leakage can cause major problems if left unattended.
Do I need sealant on compression fittings?
No jointing compound should be used on a compression fitting. The male and female tapered faces should not have anything between them, otherwise the seal is assisted and compromised by foreign and unnecessary material. You need to remove anything which prevents the faces mating.
What is flared compression?
Flare fittings are a type of compression fitting. They’re used on aluminium, copper, brass and welded steel tubing that can be flared. Flared compression fittings resist mechanical pull out which is why they are used for higher pressure situations like gas, fuel, oil and liquid petroleum high-pressure lines.
How tight does a compression fitting need to be?
Hold the compression fitting body tightly with a pair of grips and tighten the nut with a spanner. Its often said in the trade to not over tighten a compression fitting, leaving you more thread in the case of a leak and not distorting the olive or fitting. Generally a nut will need one whole turn after hand tightening.
Should I use plumber’s tape on compression fittings?
DO NOT use Teflon tape under the compression nut or on flare threads of brass compression fittings (or a compression fitting of any other material)! Liquid or gas does not touch those threads.
Do you need Teflon tape with compression fittings?
On NEW compression fittings, PTFE tape is NOT REQUIRED although there are many people that still use it as an added layer of protection against leaks.
How do you stop a compression fitting leak?
Tighten compression fittings firmly with two wrenches to crimp the ferrule onto the pipe (Photo 3). Also make sure the pipe or tube goes straight into the fitting. Misalignment will cause a leak. If the fitting leaks after you turn on the water, try tightening the nut an additional one-quarter turn.
Can you over tighten a compression fitting?
Unfortunately, if a compression valve or fitting has sustained this kind of damage from over-tightening, you should replace it.
When should you not use plumbers tape?
An important thing to remember is that PTFE tape should not be used when connecting PVC fittings or valves with a female (FPT) thread. If the tape is used on female connections, a wedging action can occur which will cause major stress on the joint during assembly. PTFE tape does not guarantee a leak free connection.
Do flare fittings need Teflon tape?
The threads in a flare fitting are NOT tapered and do not need to be sealed. The seal is between the flared end of the pipe/tube and the tapered face of the other side of the fitting. All the threaded collar does is supply force to create a seal between the opposite tapers of the two ends.
What is blue Teflon tape used for?
Thread seal tape (also known as PTFE tape, Teflon tape, or plumber’s tape) is a polytetrafluoroethylene (PTFE) film tape commonly used in plumbing for sealing pipe threads. The tape is sold cut to specific widths and wound on a spool, making it easy to wind around pipe threads.
