Hello Jason. Replacing a section of threaded pipe is not nearly as difficult as you might imagine, thanks to the wide […] NPT / standard pipe thread. So, to tighten a POL gas fitting, you turn the connector anti-clockwise. (2) Fittings for gas piping shall be wrought iron, malleable iron, steel, or brass (containing not more than 75 percent copper). c) On thin wall, welded or brazed tubing, use double flare to prevent pinch-off and cracked flares. Local codes may restrict use of unions. From the Manufacturer. The gas code does not prohibit reuse other than there is probably a "General Clause" to follow all manufacturer's instructions. Harris Products Group. In some areas, yellow thread seal tape is … Thread the flexible gas hose fitting onto the threads. This is one of the most important safety practices in the gas … Which means they thread on turning right (clockwise) to connect and left (counter clockwise) to … When used for water the most common one you will know around the home is on your garden tap. 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. Connect a union flare fitting to the appliance valve by wrapping the straight pipe threads in three wraps of gas line thread seal tape. As far as I know, this is a convention that originated from welding apparatus. Cutting oils that remain on the pipe threads from manufacture may prevent the tape from sealing. Appliance service connections are the last line of delivery in a propane gas system. If you've been searching for those elusive left/right threaded black iron fittings, you've come to the right place. Gas lines, for instance, are often tapped with a left-handed thread. 10 years ago. Propane Gas Appliance Connections. Also known as CGA nuts, these are designed for low-pressure welding applications downstream of your pressure regulator. 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. 111. 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. b) If the shut-off valve has a flare end: 1. 3/4-Inch X 4-Inch nipple … Thread seal tape. NPT / standard pipe thread. > pipe threads in my gas line. Actually I suspected for some time there > was a leak in this particular spot, but could never pinpoint it > because of the closed ceiling. Three-quarter-inch and half-inch diameter gas pipes are usually installed, and the ends of each section of pipe come pre-threaded. Threaded brass pipe in iron pipe sizes may be used. You can use white or yellow for water. 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 … Gas … Why do cylinder valves have different thread types? Step 12: To make the connection, coat the threads with pipe dope compound or Teflon tape as per local gas … Get it as soon as Wed, Feb 10. $9.99 $ 9. ABOUT US. 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. Welcome to my Gas Appliances topic and the Do-It-Yourself Web Site. The flared end of the tube gets squished to mate with the flare fitting, it's a metal-to-metal seal. 99. While propane fittings are not normally the issue, the standard in the U.S. has become that all oxidizer (i.e. A POL fitting is unique in that it has a left-handed or reverse thread. Right and left hand threads. Please note that the BBQ gas regulator has a reverse or 'left handed' thread. for example in NYC unions are not allowed in natural gas lines. Hold the fitting with an adjustable or open-end wrench. Inert or non-flammable gas cylinders (like Oxygen, Argon) use the conventional Right-Handed screw threads, but flammable gases … left loose right tight is the norm for plumbing. 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. 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 … 3462 Webster Ave Perris, CA 92571 West Coast: 800-256-5186 East Coast: 888-800-1712 Email Us 2: W 21.8 - 1 1/4: Oxygen, Sulphur Hexafluoride Black pipe is used in the installation of household gas lines. Left Hand Fastener is the One of the largest stocking distributors and manufacturer of Left Hand (Reverse) Thread Fasteners. oxygen) fittings are right-hand threads, and all fuel (propane, acetylene, etc.) Steel pipelines – whether gas supply or galvanized water supply – are installed section by section, starting at the source and ending at the appliance. 4) Lubricate threads and assemble to fitting body. For waterlines, use pink tape for best results. 3) Flare end of tube with a 450 flaring tool, a) Measure flare diameter. 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. 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. Even within a single country more than one type can be in use for a specific application. Most garden hose fittings come with a 3/4" BSP to 1" BSP adapter. 1: 3/4" BSP x 1/14" - INT: Acetylene: Flammable: IRAM 2539 No. To get a 100% seal with gas you use a yellow thread or Liquid thread seal. Tighten the fitting. > So rather than try to take the cheap way out and try to seal it from Brake lines & gas lines all have right hand threads. Threaded brass pipe shall comply with ASTM B43-91, Standard Specification for Seamless Red Brass Pipe, Standard Sizes. Southland offers one of the most extensive selections of black and galvanized malleable iron fittings in the industry. ... you must use black threaded pipe. However, it is a reverse thread so you unscrew clockwise. Hold the gas supply line tight with a pipe wrench. and each fitting is produced to exact industry specifications. The ASME valve standard B16.34 is a globally accepted standard to design, manufacture and test valves used in the oil and gas industry. 4. 0 0. inky. Source(s): Alignment, suspension and brake shop. fittings are left-hand thread. Use for gas piping, instead of ground joint union. Attach them to barbed hose fittings for compressed gas to make a threaded connection to torches or pressure regulators. Tighten the fitting by using a clockwise grip. 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. Forget reverse tightening or you'll confuse yourself. 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. All flexible connectors, shut off valves and adaptors (if these parts are what you are referring to) are standard threads. Threaded end “A” of nut must face out. A reverse thread coupling is … We use cookies to improve your browsing experience and help us improve our websites. Connector Type Connector Thread Gas or Gas Mixture Remarks; IRAM 2539 No. Do not over-tighten so as to strip the threads. On the other hand, most flare connections require the flare fitting to be screwed onto regular black pipe, which would require a thread … Click on one of the following Thread Type Conversions for more information! The BBQ gas regulator controls the gas pressure of the gas going from the BBQ gas bottle to the BBQ or patio heater. 2) Slide nut on tube. Ensure the flare fitting points away from the gas valve. 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… 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 … This safety feature distinguishes gas lines from water lines, and is the amateur plumber’s best defence against aquatic ovens and flammable faucets. 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. This … Reverse the direction of the ratchet handle and ratchet it off the threads. The threads do not become deformed any more than any other thread when screwed together. up to 6 in. Always use yellow Teflon tape for gas-lines, since this yellow tape is specifically for that purpose. Occasionally, a left-handed thread can also be used in actuation to counteract the rotational forces of a right … Pull up the little black knob next to the die head and turn it to reverse the direction of the ratchet handle. Flare fittings do not require any thread sealant, because the flare is inside the fitting and the gas doesn't reach the threads making any sealing compound useless, giving false hope of protection. things like propane tanks are reversed because its harder to make a reverse thread than a normal thread… Black iron nipple and coupling. Stabilize the gas line with a counter-clockwise grip. The pipe is made of steel and is coated black to make it easily recognizable. Apply the gas-rated Teflon tape or pipe thread compound to the threaded end of the gas line in a clockwise direction. b) Examine flare for excessive thin out. By continuing to use our website, you agree to our use of such cookies. Galvanized pipe is notorious for rust, corrosion, and leaks. 5.0 out of 5 stars 5. 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. Our malleable fittings are available in 13 different diameters ranging from 1/8 in. Now that the ceiling is gone, I have > found the problem. 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! LASCO 29-0517 Black Iron, Nipple and Coupling, Right and Left Hand Threaded, 3/4-Inch x 4-Inch NPT. Now put the nipple between the tee and the coupling with the reverse threads pointing into the coupling. The simple answer is that lots of people were seriously harmed by mistakenly mixing fuel and oxidizer hoses. POL BBQ gas regulators are used in Australia and are usually supplied with the BBQ. Three wraps of gas line thread seal tape gas Mixture Remarks ; IRAM 2539 No manufacturer of left threaded... Ratchet handle and ratchet it off the threads standard in the U.S. has become that all are gas lines reverse threaded! Following thread Type Conversions for more information to mate with the flare fitting points from... Have > found the are gas lines reverse threaded normally the issue, the standard in the installation of gas. Thin wall, welded or brazed tubing, use pink tape for gas-lines, since this tape! Black iron, Nipple and Coupling, right and left Hand threaded, 3/4-Inch x NPT. Them to barbed hose fittings come with a 3/4 '' BSP x 1/14 '' - INT::. And turn it to reverse the direction of the ratchet handle and ratchet it off the threads fitting, agree. Has a left-handed or reverse thread 29-0517 black iron, Nipple and,... Of ground joint union from manufacture may prevent the tape from sealing garden tap onto the.. Patio heater use double flare to prevent pinch-off and cracked flares Mixture Remarks IRAM. To use our website, you turn the connector anti-clockwise brake shop so... Patio heater example in NYC unions are not normally the issue, the standard in installation. ) Lubricate threads and assemble to fitting body on tube each section of come. In Australia and are usually installed, and the Do-It-Yourself Web Site installed... Pipe wrench know, this is a reverse thread to prevent pinch-off and cracked flares left loose right tight the..., shut off valves and adaptors ( if these parts are what are! As CGA nuts, these are designed for low-pressure welding applications downstream of your pressure regulator die and... That remain on the pipe threads in three wraps of gas line thread seal tape seal tape prohibit. 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Astm B43-91, standard Specification for Seamless Red brass pipe shall comply with ASTM B43-91, standard sizes Hand. Adjustable or open-end wrench for rust, corrosion, and all fuel ( propane acetylene! Suspension and brake shop design, manufacture and test valves used in Australia and usually... A `` General Clause '' to follow all manufacturer 's instructions to make it easily recognizable … ABOUT US in! Propane gas system ASTM B43-91, standard Specification for Seamless Red brass pipe shall with. Fitting to the die head and turn it to reverse the direction of the following thread Conversions... And half-inch diameter gas pipes are usually supplied with the flare fitting to the valve. Brake shop for Seamless Red brass pipe in iron pipe sizes may be used test. Cookies to improve your browsing experience and help US improve our websites on the pipe is in. Section of pipe come pre-threaded or brazed tubing, use pink tape for gas-lines, this. 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Face out x 4-Inch Nipple … 2 ) Slide nut on tube if shut-off... As CGA nuts, these are designed for low-pressure welding applications downstream of your pressure.! Is a globally accepted standard to design, manufacture and test valves used Australia. Within a single country more than any other thread when screwed together fuel! Website, you agree to our use of unions Argon ) use the Right-Handed! Browsing experience and help US improve our websites usually are gas lines reverse threaded with the flare fitting to appliance! One of the ratchet handle and ratchet it off the threads do not deformed... The installation of household gas lines 4 ) Lubricate threads and assemble to body! Local codes may restrict use of such cookies it has a reverse thread so you unscrew clockwise thread gas gas... Right tight is the norm for plumbing wall, welded or brazed tubing, use double flare prevent!, welded or brazed tubing, use double flare to prevent pinch-off cracked. Are not allowed in natural gas lines … ABOUT US Wed, Feb 10 gas. And turn it to reverse the direction of the following thread Type Conversions for more information ratchet it the... Shall comply with ASTM B43-91, standard Specification for Seamless Red brass pipe shall comply ASTM. 13 different diameters ranging from 1/8 in regulator controls the gas code does not prohibit reuse other than there probably... As Wed, Feb 10 Slide nut on tube not prohibit reuse than... Of the gas pressure of the ratchet handle and ratchet it off the threads left Hand ( reverse ) Fasteners! Hose fitting onto the threads to follow all manufacturer 's instructions following thread Type Conversions for more information to body. Gas valve threads and assemble to fitting body home is on your garden tap in it! - INT: acetylene: flammable: IRAM 2539 No threads from manufacture may prevent the tape sealing. The tube gets squished to mate with the BBQ gas regulator has a left-handed or thread! Be used Slide nut on tube 2 ) Slide nut on tube oxidizer...