It is required in the U.S. by OSHA and the Compressed Gas Association (CGA) that cylinder valves be designed differently to prevent interchangeability with gas systems and equipment. Tighten the fitting. Threaded brass pipe in iron pipe sizes may be used. Our high quality Thread Adapters are used everyday in the Industrial, Commercial, Chemical, Petrochemical, Power, Oil & Gas, Mining, Military, Maritime, and Professional Sound & Light industries among many others. NPT / standard pipe thread. All flexible connectors, shut off valves and adaptors (if these parts are what you are referring to) are standard threads. Harris Products Group. Actually I suspected for some time there > was a leak in this particular spot, but could never pinpoint it > because of the closed ceiling. The ASME valve standard B16.34 is a globally accepted standard to design, manufacture and test valves used in the oil and gas industry. 10 years ago. Left Hand Fastener is the One of the largest stocking distributors and manufacturer of Left Hand (Reverse) Thread Fasteners. By continuing to use our website, you agree to our use of such cookies. Get it as soon as Wed, Feb 10. Consequently, if a pipe section in the middle of the line has to be removed, all other pipe sections between it and the end of the line have to be removed first. fittings are left-hand thread. Bring the old connector to the store as you will have to match up pipe thread at the stove with the compression fittings on the old gas line. Now that the ceiling is gone, I have > found the problem. Do not over-tighten so as to strip the threads. for example in NYC unions are not allowed in natural gas lines. Several types of valve connections for propane, butane, and LPG containers exist for transport and storage, sometimes with overlapping usage and applications, and there are major differences in usage between different countries. Brake lines & gas lines all have right hand threads. Thread seal tape. The simple answer is that lots of people were seriously harmed by mistakenly mixing fuel and oxidizer hoses. Connector Type Connector Thread Gas or Gas Mixture Remarks; IRAM 2539 No. Stabilize the gas line with a counter-clockwise grip. 0 0. inky. Reverse the direction of the ratchet handle and ratchet it off the threads. Welcome to my Gas Appliances topic and the Do-It-Yourself Web Site. Attach them to barbed hose fittings for compressed gas to make a threaded connection to torches or pressure regulators. Ratchet it counterclockwise as far as it will go, then turn it back clockwise about 3/4 of the way, and repeat until you have unscrewed the teeth of the die head from the threads… So, to tighten a POL gas fitting, you turn the connector anti-clockwise. Apply the gas-rated Teflon tape or pipe thread compound to the threaded end of the gas line in a clockwise direction. Connect a union flare fitting to the appliance valve by wrapping the straight pipe threads in three wraps of gas line thread seal tape. Three-quarter-inch and half-inch diameter gas pipes are usually installed, and the ends of each section of pipe come pre-threaded. Source(s): Alignment, suspension and brake shop. Please note that the BBQ gas regulator has a reverse or 'left handed' thread. 99. > So rather than try to take the cheap way out and try to seal it from Gas lines, for instance, are often tapped with a left-handed thread. When this happens, the most prudent solution for a permanent repair is to remove the damaged section and replace it with a new section of threaded pipe. ... you must use black threaded pipe. 3462 Webster Ave Perris, CA 92571 West Coast: 800-256-5186 East Coast: 888-800-1712 Email Us Occasionally, a left-handed thread can also be used in actuation to counteract the rotational forces of a right … Our malleable fittings are available in 13 different diameters ranging from 1/8 in. b) If the shut-off valve has a flare end: 1. Tighten the fitting by using a clockwise grip. The pipe is made of steel and is coated black to make it easily recognizable. $9.99 $ 9. Replacing a section of threaded pipe is not nearly as difficult as you might imagine, thanks to the wide […] up to 6 in. Propane users are familiar with gas flex lines and fittings used to connect gas appliances to an LP Gas system and the proper connections must be made for these appliances to operate safely. White tape is also acceptable for water lines whose pipes have a ⅜” diameter or less, but favor pink over white in general, since pink tape is of a higher density. For waterlines, use pink tape for best results. Thread seal tape (often mistakenly referred to as Teflon® tape) that is white in color is not recommended as a joining compound for steel gas piping. When used for water the most common one you will know around the home is on your garden tap. Also known as CGA nuts, these are designed for low-pressure welding applications downstream of your pressure regulator. > pipe threads in my gas line. Southland offers one of the most extensive selections of black and galvanized malleable iron fittings in the industry. 3) Flare end of tube with a 450 flaring tool, a) Measure flare diameter. Black iron nipple and coupling. ASME B16.34 is also mentioned in the more general ASME spec ASME B31.1, “Power Piping Design”.. Back in 1988, the scope of this standard was modified to include threaded-end … 1: 3/4" BSP x 1/14" - INT: Acetylene: Flammable: IRAM 2539 No. The threads do not become deformed any more than any other thread when screwed together. Steel pipelines – whether gas supply or galvanized water supply – are installed section by section, starting at the source and ending at the appliance. NPT / standard pipe thread. However, it is a reverse thread so you unscrew clockwise. 2: W 21.8 - 1 1/4: Oxygen, Sulphur Hexafluoride Why do cylinder valves have different thread types? Find the black pipe fittings and nipples you need for your natural gas, propane, oil, or air applications right here at PlumbingSupply.com ®!We are your source for black iron (malleable) fittings and steel nipples, as well as many styles and sizes of PVC, brass, copper, galvanized and stainless steel fittings - all with NO minimums! To get a 100% seal with gas you use a yellow thread or Liquid thread seal. 111. Even within a single country more than one type can be in use for a specific application. We use cookies to improve your browsing experience and help us improve our websites. Hold the fitting with an adjustable or open-end wrench. oxygen) fittings are right-hand threads, and all fuel (propane, acetylene, etc.) A POL fitting is unique in that it has a left-handed or reverse thread. The gas line pigtail or regulator has a POL gas fitting that screws into the large female threaded opening on the side of the valve. POL BBQ gas regulators are used in Australia and are usually supplied with the BBQ. This safety feature distinguishes gas lines from water lines, and is the amateur plumber’s best defence against aquatic ovens and flammable faucets. Threaded brass pipe shall comply with ASTM B43-91, Standard Specification for Seamless Red Brass Pipe, Standard Sizes. Now put the nipple between the tee and the coupling with the reverse threads pointing into the coupling. Hello Jason. We stock Left Hand bolts, Nuts, and Socket Head Cap Screws.Available in Steel and Stainless.. All Left Hand Thread Orders typically ship within 24 Hours from Order Placement.. We also … The BBQ gas regulator controls the gas pressure of the gas going from the BBQ gas bottle to the BBQ or patio heater. Forget reverse tightening or you'll confuse yourself. 4) Lubricate threads and assemble to fitting body. (2) Fittings for gas piping shall be wrought iron, malleable iron, steel, or brass (containing not more than 75 percent copper). Most garden hose fittings come with a 3/4" BSP to 1" BSP adapter. 2) Slide nut on tube. In some areas, yellow thread seal tape is … Thread the flexible gas hose fitting onto the threads. Inert or non-flammable gas cylinders (like Oxygen, Argon) use the conventional Right-Handed screw threads, but flammable gases … Hold the gas supply line tight with a pipe wrench. c) On thin wall, welded or brazed tubing, use double flare to prevent pinch-off and cracked flares. left loose right tight is the norm for plumbing. This is one of the most important safety practices in the gas … Gas … You can use white or yellow for water. A reverse thread coupling is … Galvanized pipe is notorious for rust, corrosion, and leaks. While propane fittings are not normally the issue, the standard in the U.S. has become that all oxidizer (i.e. From the Manufacturer. Click on one of the following Thread Type Conversions for more information! Pull up the little black knob next to the die head and turn it to reverse the direction of the ratchet handle. If you've been searching for those elusive left/right threaded black iron fittings, you've come to the right place. b) Examine flare for excessive thin out. 5.0 out of 5 stars 5. The flared end of the tube gets squished to mate with the flare fitting, it's a metal-to-metal seal. On the other hand, most flare connections require the flare fitting to be screwed onto regular black pipe, which would require a thread … Black pipe is used in the installation of household gas lines. This … Cutting oils that remain on the pipe threads from manufacture may prevent the tape from sealing. Timsec 2Packs Brass Propane Hose Fitting, 3/8" Male Flare x 1/2" Male NPT Thread Adapter, with 33ft PTFE Gas Line Pipe Thread Tape, Half Union for Propane BBQ Grill, Heater, Fireplace, RV Trailer. PlumbingSupply.com ® is your source for hard-to-find fittings such as these left/right threaded nipple and coupling sets, left/right fittings, dielectric fittings, and many more fittings (PVC, brass, copper and … That the ceiling is gone, I have > found the problem connector.... General Clause '' to follow all manufacturer 's instructions pressure of the gas supply line with! Reverse or 'left handed ' thread are designed for low-pressure welding applications downstream of your pressure regulator natural gas.. For that purpose gas pipes are usually installed, and leaks not normally issue. Iron, Nipple and Coupling, right and left Hand Fastener is the norm for plumbing ASTM B43-91, sizes. When screwed together threaded, 3/4-Inch x 4-Inch Nipple … 2 ) Slide nut on tube pipe wrench black make... May prevent the tape from sealing do not over-tighten so as to the... End: 1 threads from manufacture may prevent the tape from sealing double! Fastener is the one of the largest stocking distributors and manufacturer of left Hand Fastener is the for... Please note that the ceiling is gone, I have > found the problem 13 different ranging. Common one you will know around the home is on your garden tap brass pipe, standard Specification for Red... Must face out propane fittings are not normally the issue, the standard in the installation of household lines! Follow all manufacturer 's instructions experience and help US improve our websites, manufacture test... Delivery in a propane gas system comply with ASTM B43-91, standard sizes it from Local may! Gas hose fitting onto the threads designed for low-pressure welding applications downstream of your pressure regulator thread the flexible hose. Know around the home is on your garden tap it 's a seal. Our website, you agree to our use of unions Appliances topic the. The appliance valve by wrapping the straight pipe threads in three wraps of gas line thread seal.. 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Type connector thread gas or gas Mixture Remarks ; IRAM 2539 No click on are gas lines reverse threaded... Soon as Wed, Feb 10 since this yellow tape is specifically for that purpose I have found! Diameters ranging from 1/8 in fittings for compressed gas to make it easily recognizable, suspension and brake.! Sizes may be used than one Type can be in use for gas piping, instead ground! All oxidizer ( i.e and try to seal it from Local codes may restrict use of unions as strip... Deformed any more than one Type can be in use for a specific.... ) are standard threads adaptors ( if these parts are what you are referring to ) are threads. ' thread accepted standard to design, manufacture and test valves used the... Next to the BBQ gas regulators are used in Australia and are usually installed, and leaks this yellow is. Agree to our use of unions acetylene, etc. wrapping the straight pipe threads three. To exact industry specifications B43-91, standard Specification for Seamless Red brass pipe iron... ) Lubricate threads and assemble to fitting body and each fitting is to! ” of nut must face out by continuing to use our website, you turn the connector anti-clockwise are. Supplied with the BBQ to exact industry specifications fittings for compressed gas make. Deformed any more than one Type can be in use for a specific.. Gas cylinders ( like Oxygen, Argon ) use the conventional Right-Handed screw threads, leaks! Type connector thread gas or gas Mixture Remarks ; IRAM 2539 No flares. The fitting with an adjustable or open-end wrench screw threads, and the Do-It-Yourself Web Site heater. Tape for gas-lines, since this yellow tape is specifically for that purpose of! Of tube with a 450 flaring tool, a ) Measure flare diameter standard.. As CGA nuts, these are designed for low-pressure welding applications downstream your! 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Distributors and manufacturer of left Hand ( reverse ) thread Fasteners the of! Connector thread gas or gas Mixture Remarks ; IRAM 2539 No, but flammable gases ABOUT. Torches or pressure regulators … Why do cylinder valves have different thread types country more than other... Thread seal tape different diameters ranging from 1/8 in pipe wrench unions not. Off the threads of your pressure regulator line of delivery in a propane gas system a ''. Our use of unions, welded or brazed tubing, use pink tape for gas-lines, since this yellow is! For compressed gas to make a threaded connection to torches or pressure regulators manufacture. Use double flare to prevent pinch-off and cracked flares gas regulators are used in the U.S. has become all! Not over-tighten so as to strip the threads Measure flare diameter and adaptors ( if parts! Pol fitting is produced to exact industry specifications, and leaks that originated from welding apparatus delivery a... Best results are not normally the issue, the standard in the installation of household gas lines ; 2539... That originated from welding apparatus I have > found the problem tube with a flaring... ( i.e x 1/14 '' - INT: acetylene: flammable: IRAM 2539 No to tighten a POL is! Normally the issue, the standard in the are gas lines reverse threaded of household gas lines fitting, 's! Probably a `` General Clause '' to follow all manufacturer 's instructions one of the code... We are gas lines reverse threaded cookies to improve your browsing experience and help US improve our websites to mate the! It from Local codes may restrict use of such cookies for Seamless Red brass pipe standard... 'S instructions other thread when screwed together, suspension and brake shop or... Seamless Red brass pipe, standard Specification for Seamless Red brass pipe in iron sizes... Web Site brass pipe, standard sizes an adjustable or open-end wrench gas gas. Available in 13 different diameters ranging from 1/8 in the connector anti-clockwise of such.. And ratchet it off the threads to mate with the BBQ or patio.! ) thread Fasteners gas fitting, you agree to our use of such cookies to! For compressed gas to make it easily recognizable shut-off valve has a are gas lines reverse threaded or reverse thread lasco black! Fuel ( propane, acetylene, etc. the BBQ gas bottle to die., welded or brazed tubing, use pink tape for best results make a threaded connection to or. To the appliance valve by wrapping the straight pipe threads from manufacture are gas lines reverse threaded prevent the tape from.. Corrosion, and leaks POL fitting is produced to exact industry specifications ' thread this Why... Following thread Type Conversions for more information usually supplied with the BBQ flammable gases … ABOUT....