What is a left and right coupling?
Left/Right Nipple And Coupling Set These have standard right-hand threads on one side & reverse (left-hand) threads on the other. These are generally used for gas piping, when unions are not allowed.
Are all gas threads reversed?
Gas fittings are specifically designed for use with gases, such as flammable propane or hazardous phosgene. These types of fittings have a reverse thread; meaning, the threads are cut in the reverse direction from all other fittings so that gas lines cannot be connected to air lines, water lines, or vent lines.
How do you loosen old gas pipe fittings?
Gently rock the wrench back and forth in a motion that is perpendicular to the length of the pipe to break the pipe fitting free. Apply leverage by gripping the wrench handle as close to the end of the handle as you can while maintaining a firm grip.
Which fitting is used to change direction?
Elbows
Elbows: Used to change the angle or direction of the pipe run. Most commonly in 90 degrees and 45 degree turns. The sweep of the fitting describes how fast a transition or change in direction is made.
Is black gas pipe reverse threaded?
The gas fitting is designed for use with gases. Gas lines can’t be connected to air lines, water lines, or vent lines with these types of fittings because the threads are cut in the reverse direction.
What is a union fitting?
A union is a threaded fitting which allows the pipe work to be separated and reconnected without any horizontal movement in the pipe. It can be a standalone pipe fitting connecting two pieces of pipe, or an integral part of another fitting (such as a ball valve) which allows it to be separated.
Which way do gas lines unscrew?
Unscrew the fitting from the pipe to which it is attached by holding the pipe with one wrench and turning the fitting counterclockwise with another.
Why are gas threads reversed?
Which way do you loosen a gas pipe?
Disconnect the Line Turn the wrench counterclockwise. It may take some pressure to change at first. If the nut doesn’t turn, you can ask someone else to hold the gas line. Then, you can apply a second adjustable wrench to the top nut on the fitting.
How to tighten left and right side fittings and couplings?
The trick for left- and right-hand fittings and couplings is to get the correct bite the first time. The way to do that is to insert one side of the nipple/coupling and hand-tighten. Count the number of turns to get it to hand-tight. Then take apart and do the same on the other side.
How to use left and right hand fittings correctly?
The trick for left- and right-hand fittings and couplings is to get the correct bite the first time. The way to do that is to insert one side of the nipple/coupling and hand-tighten.
Where can I find gas equipment adaptors&fittings?
Adapters & Fittings – Gas Equipment | Airgas Find the connect sets, hose repair kits, washer sets, couplers, splicers, hose ferrules, clamps and all other adaptors & fittings you need at Airgas. We use cookies to improve your browsing experience and help us improve our websites.
What do I do if my gas stove fittings don’t match?
If the fittings don’t match, one solution is to replace the valve with one that has a flare fitting on one side and a 1/2-inch female pipe thread on the other side. Use the adapter included with your hookup kit to connect the flexible gas line. On the stove end, use another flare-to-pipe-thread fitting.