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How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Two Line

Temperature Range: -40° to 180° F
Material:
Grade R Hose: EPDM Rubber
Grade T Hose: Blended Rubber
Color: Green, Red, or Green/Red

Hose is abrasion, weather, and ozone resistant.

Grade T Hose—It's also oil and flame resistant. Green hose is for oxygen and has right-hand threads on the fittings; red hose is for acetylene, hydrogen, MAPP, natural gas, propane, or propylene and has left-hand threads on the fittings.

For technical drawings and 3-D models, click on a part number.

Brass Threaded UNF Female × Brass Threaded UNF Female
Number of Lines	Color	ID	OD	Thread Size		12 1/2 ft.	25 ft.	50 ft.	100 ft.
200 psi @ 72° F Max. Pressure
2	Green/Red	1/4"	9/16"	9/16"-18 × 9/16"-18	000000	000000	0000000	0000000	0000000

Welding Gas Hose

Two Line

Temperature Range: -40° to 180° F
Material:
Grade R Hose: EPDM Rubber
Grade T Hose: Blended Rubber
Color: Green, Red, or Green/Red
Compatible Hose Fittings: Barbed

Made of EPDM rubber, this hose is abrasion, weather, and ozone resistant.

Grade T Hose—It's also oil and flame resistant. Green hose is for oxygen; red hose is for acetylene, hydrogen, MAPP, natural gas, propane, or propylene.

For technical drawings and 3-D models, click on a part number.

							Per Ft.
Welding Hose Grade	Number of Lines	Color	ID	OD	Max. Continuous Lg., ft.		10-99	100-Up
200 psi @ 72° F Max. Pressure
T	2	Green/Red	1/4"	9/16"	700	0000000	00000	00000

Reels with Welding Hose

Reels come with two abrasion, weather, and ozone resistant hoses. Both lines lock in place when pulled out of the reel; they retract with a quick tug.

Reel			Hose
Ht.	Wd.	Dp.	Welding Hose Grade	Thread Size	Fittings	ID	OD	Lg., ft.	Max. Pressure	Color		Each
Neoprene Rubber Hose
5" Lg. × 4" Wd. Mounting Base
21 1/2"	10 1/2"	19 1/2"	T	9/16"-18 × 9/16"-18	Brass Threaded UNF Female × Brass Threaded UNF Female	1/4"	9/16"	50	200 psi @ 72° F	Green/Red	0000000	0000000
25 1/2"	10 1/2"	24"	T	9/16"-18 × 9/16"-18	Brass Threaded UNF Female × Brass Threaded UNF Female	1/4"	9/16"	75	200 psi @ 72° F	Green/Red	0000000	000000

High-Pressure Nipples for Compressed Gas

Commonly used in high-pressure welding applications, these nipples connect your tank to the inlet of a pressure regulator. One side has a threaded pipe end and the other side has a rounded end that sits inside a threaded nut (sold separately) so you can make a threaded connection.

Brass nipples have good corrosion resistance and are softer than 316 stainless steel nipples, so they're easier to thread together. Chrome-plated brass nipples have better corrosion and wear resistance than unplated brass nipples and have a bright, shiny appearance.

Nipples that tighten by hand should be paired with a nut with a plastic grip.

For technical drawings and 3-D models, click on a part number.

Nipples, Tank × Male Regulator

Maximum Pressure: See table
Maximum Temperature: 120° F

	Regulator Connection
For Number (Max. Pressure)	Pipe Size	Thread Type	Lg.	For Use With		Each
Brass—Tighten With Wrench
CGA 170 (3,000 psi @ 72° F)	1/8	NPT	1 1/4"	Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene	000000000	000000
CGA 180 (3,000 psi @ 72° F)	1/8	NPT	2"	Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene	000000000	00000
CGA 500, 580, 590 (3,000 psi @ 72° F); CGA 510 (500 psi @ 72° F)	1/4	NPT	2 1/2"	Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Medical Gas Mixtures, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon	000000000	0000
CGA 500, 580, 590 (3,000 psi @ 72° F); CGA 510 (500 psi @ 72° F)	1/4	NPT	3"	Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Medical Gas Mixtures, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon	000000000	0000
CGA 500, 580, 590 (3,000 psi @ 72° F); CGA 510 (500 psi @ 72° F)	1/4	NPT	3 1/2"	Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Medical Gas Mixtures, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon	000000000	0000
Brass—Tighten By Hand
CGA 500, 580, 590 (3,000 psi @ 72° F); CGA 510 (500 psi @ 72° F)	1/4	NPT	2 1/2"	Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Medical Gas Mixtures, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon	0000000	00000
CGA 500, 580, 590 (3,000 psi @ 72° F); CGA 510 (500 psi @ 72° F)	1/4	NPT	3"	Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Medical Gas Mixtures, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon	0000000	00000
CGA 510 (500 psi @ 72° F); CGA 580, 590 (3,000 psi @ 72° F)	1/4	NPT	3 33/64"	Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon	000000000	00000
Chrome-Plated Brass—Tighten With Wrench
CGA 500, 580, 590 (3,000 psi @ 72° F); CGA 510 (500 psi @ 72° F)	1/4	NPT	2 1/2"	Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Medical Gas Mixtures, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon	0000000	00000
CGA 500, 580, 590 (3,000 psi @ 72° F); CGA 510 (500 psi @ 72° F)	1/4	NPT	3"	Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Medical Gas Mixtures, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon	0000000	00000
CGA 510 (500 psi @ 72° F); CGA 580, 590 (3,000 psi @ 72° F)	1/4	NPT	3 1/2"	Acetylene, Argon, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Helium, Isobutane, Krypton, Methane, Methyl Chloride, Natural Gas, Neon, Nitrogen, Propane, Propylene, Sulfur Hexafluoride, Vinyl Chloride, Vinyl Bromide, Xenon	000000000	00000

Nuts

Female Nut

Male Nut

Maximum Pressure: See table
Maximum Temperature: 120° F

Brass
Number	Gender	Thread Size	Thread Type	Thread Direction	Max. Pressure	For Use With		Each
CGA 500	Male	0.880"-14	NGO	Right Hand	3,000 psi @ 72° F	Medical Gas Mixtures	000000000	000000
CGA 510	Male	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	000000000	0000
CGA 580	Male	0.960"-14	NGO	Right Hand	3,000 psi @ 72° F	Argon, Helium, Krypton, Neon, Nitrogen, Xenon	000000000	0000
CGA 590	Male	0.960"-14	NGO	Left Hand	3,000 psi @ 72° F	Sulfur Hexafluoride	000000000	0000
Brass with Plastic Grip
CGA 500	Male	0.880"-14	NGO	Right Hand	3,000 psi @ 72° F	Medical Gas Mixtures	00000000	00000
CGA 510	Male	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	000000000	00000
CGA 580	Male	0.960"-14	NGO	Right Hand	3,000 psi @ 72° F	Argon, Helium, Krypton, Neon, Nitrogen, Xenon	000000000	00000
CGA 590	Male	0.960"-14	UN/UNF (CGA)	Left Hand	3,000 psi @ 72° F	Sulfur Hexafluoride	00000000	00000
Aluminum-Plated Brass
CGA 170	Female	9/16"-18	UN/UNF (CGA)	Right Hand	3,000 psi @ 72° F	Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene	000000000	00000
CGA 180	Female	5/8"-18	UN/UNF (CGA)	Right Hand	3,000 psi @ 72° F	Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene	000000000	00000
Chrome-Plated Brass
CGA 510	Male	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	000000000	00000
CGA 580	Male	0.960"-14	NGO	Right Hand	3,000 psi @ 72° F	Argon, Helium, Krypton, Neon, Nitrogen, Xenon	000000000	00000
CGA 590	Male	0.960"-14	NGO	Left Hand	3,000 psi @ 72° F	Sulfur Hexafluoride	000000000	00000

Nuts for High-Pressure Nipples for Compressed Gas

Slide a high-pressure hose nipple for compressed gas into one of these nuts to connect a pipe to the inlet of a pressure regulator. They are also known as CGA (Compressed Gas Association) nuts and inlet nuts.

Brass nuts have good corrosion resistance and are softer than 316 stainless steel nuts, so they're easier to thread together. Aluminum-plated brass nuts have better corrosion and wear resistance than unplated brass. Chrome-plated brass nuts have comparable corrosion and wear resistance to aluminum-plated brass nuts, and have a bright, shiny appearance.

Nuts with a plastic grip can be tightened by hand instead of with a wrench.

Nuts with left-hand threads are identified with a notch.

Note: Nuts have a CGA, BS, or DIN number that corresponds to a specific type of gas. Choose a nut with the same number as your tank and other system components.

For technical drawings and 3-D models, click on a part number.

Female

Female Nut

Maximum Pressure: See table
Maximum Temperature: 120° F, except DIN 477 No. 9: 250° F

Aluminum-Plated Brass
Number	Thread Size	Thread Type	Thread Direction	Max. Pressure	For Use With		Each
CGA 170	9/16"-18	UN/UNF (CGA)	Right Hand	3,000 psi @ 72° F	Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene	000000000	000000
CGA 180	5/8"-18	UN/UNF (CGA)	Right Hand	3,000 psi @ 72° F	Air, Argon, Butane, Carbon Dioxide, Helium, Krypton, Methane, Natural Gas, Neon, Nitrogen, Oxygen, Propane, Propylene	000000000	00000

Male

Male Nut

Maximum Pressure: See table
Maximum Temperature: 120° F, except DIN 477 No. 12: 250° F

Brass
Number	Thread Size	Thread Type	Thread Direction	Max. Pressure	For Use With		Each
CGA 500	0.880"-14	NGO	Right Hand	3,000 psi @ 72° F	Medical Gas Mixtures	000000000	000000
CGA 510	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	000000000	0000
CGA 580	0.960"-14	NGO	Right Hand	3,000 psi @ 72° F	Argon, Helium, Krypton, Neon, Nitrogen, Xenon	000000000	0000
CGA 590	0.960"-14	NGO	Left Hand	3,000 psi @ 72° F	Sulfur Hexafluoride	000000000	0000
Brass with Plastic Grip
CGA 500	0.880"-14	NGO	Right Hand	3,000 psi @ 72° F	Medical Gas Mixtures	00000000	00000
CGA 510	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	000000000	00000
CGA 580	0.960"-14	NGO	Right Hand	3,000 psi @ 72° F	Argon, Helium, Krypton, Neon, Nitrogen, Xenon	000000000	00000
CGA 590	0.960"-14	UN/UNF (CGA)	Left Hand	3,000 psi @ 72° F	Sulfur Hexafluoride	00000000	00000
Chrome-Plated Brass
CGA 510	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	000000000	00000
CGA 580	0.960"-14	NGO	Right Hand	3,000 psi @ 72° F	Argon, Helium, Krypton, Neon, Nitrogen, Xenon	000000000	00000
CGA 590	0.960"-14	NGO	Left Hand	3,000 psi @ 72° F	Sulfur Hexafluoride	000000000	00000

High-Pressure Threaded Fittings for Compressed Gas

Designed to handle high-pressure welding applications, these fittings are commonly used to connect pressure regulators to compressed gas tanks or cylinders. Fittings are also known as CGA (Compressed Gas Association) fittings. They are brass for good corrosion resistance.

Fittings with left-hand threads are identified with a notch in the nut.

Note: Fittings have a CGA number that corresponds to a specific type of gas. Choose a fitting with the same CGA number as your tank and other system components.

For technical drawings and 3-D models, click on a part number.

Female Tank × Female Regulator

Maximum Pressure: See table
Maximum Temperature: 120° F

CGA Number		Tank Connection			Regulator Connection
Tank	Regulator	Thread Size	Thread Type	Thread Direction	Thread Size	Thread Type	Thread Direction	Max. Pressure	For Use With		Each
Brass
200	510	0.628"-14	NGO	Right Hand	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	0000000	000000
300	510	0.830"-14	NGO	Right Hand	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethyl Chloride, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	0000000	0000
410	510	0.855"-14	NGO	Left Hand	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	0000000	00000
520	510	0.899"-14	NGO	Right Hand	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	0000000	00000
555	510	0.908"-14	NGO	Left Hand	0.880"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, LP Gas, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	0000000	00000

Male Tank × Male Regulator

Maximum Pressure: See table
Maximum Temperature: 120° F

CGA Number		Tank Connection			Regulator Connection
Tank	Regulator	Thread Size	Thread Type	Thread Direction	Thread Size	Thread Type	Thread Direction	Max. Pressure	For Use With		Each
Brass
510	200	0.880"-14	NGO	Left Hand	0.628"-14	NGO	Right Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	0000000	000000
510	300	0.880"-14	NGO	Left Hand	0.830"-14	NGO	Right Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethyl Chloride, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	0000000	00000
510	410	0.880"-14	NGO	Left Hand	0.855"-14	NGO	Left Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	0000000	00000
510	520	0.880"-14	NGO	Left Hand	0.899"-14	NGO	Right Hand	500 psi @ 72° F	Acetylene, Butane, Cyclopropane, Dimethyl Ether, Ethylene Oxide, Isobutane, Methane, Methyl Chloride, Natural Gas, Propane, Propylene, Vinyl Bromide, Vinyl Chloride	0000000	00000

Quick-Connect Propane Torch Kits

Save time by quickly connecting and disconnecting your propane torch tips to get the right output for your job. Kit can also be used with Apachi, HPG, and propylene. Note: Maximum power output and flame temperature values shown are for use with propane.

Torch Kits

1/2" Dia. Tip				1" Dia. Tip					Pressure Regulator Inlet
Max. Power Output, Btu/hr.	Max. Flame Temp., °F	For Soft Soldering Copper Tube Dia. (For Use With)	For Silver Soldering Copper Tube Dia. (For Use With)	Max. Power Output, Btu/hr.	Max. Flame Temp., °F	For Soft Soldering Copper Tube Dia. (For Use With)	For Silver Soldering Copper Tube Dia. (For Use With)	Adjustable Flame	CGA Number	Gender		Each
8,400	3000°	1 1/2” (Propane) 2 1/2" (Propylene)	3/4" (Propane) 1 1/4" (Propylene)	45,300	3000°	4" (Propane) 6" (Propylene)	2" (Propane) 4" (Propylene)	Yes	CGA 510	Male	00000000	0000000

Replacement Tips

Dia.	Max. Power Output, Btu/hr.	Adjustable Flame	Max. Flame Temp., °F	For Soft Soldering Copper Tube Dia. (For Use With)	For Silver Soldering Copper Tube Dia. (For Use With)		Each
7/16"	5,300	Yes	3000°	1" (Propane); 1 1/2" (Propylene)	1/2" (Propane); 1/2" (Propylene)	00000000	0000000
1/2"	8,400	Yes	3000°	1 1/2" (Propane); 2 1/2" (Propylene)	3/4" (Propane); 1 1/4" (Propylene)	00000000	000000
3/4"	23,700	Yes	3000°	2 1/2" (Propane); 4" (Propylene)	1 1/4" (Propane); 2" (Propylene)	00000000	000000
1"	45,300	Yes	3000°	4" (Propane); 6" (Propylene)	2" (Propane); 4" (Propylene)	00000000	000000

Extended-Reach Propane Torch Kits

Access overhead and other hard-to-reach applications. These torches have an attached 4 ft. hose. Connect the hose directly to your propane cylinder. These torches automatically ignite when you press the trigger. They don't require an external lighter.

Max. Power Output, Btu/hr.	Adjustable Flame	Max. Flame Temp., °F	For Soft Soldering Copper Tube Dia. (For Use With)	CGA Number	Thread Size	Thread Type	Gender	Ignition Control	Includes		Each
9,000	Yes	3600°	1 1/2" (Propane); 1 1/2" (Propylene)	600	1"-20	UNF	Female	Trigger	4-ft. Lg. Hose Cylinder Holster Pressure Regulator	0000000	000000

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How to Identify and Measure Fittings

Welding Gas Hose with Fittings

Welding Gas Hose

Reels with Welding Hose

High-Pressure Nipples for Compressed Gas

Nuts for High-Pressure Nipples for Compressed Gas

High-Pressure Threaded Fittings for Compressed Gas

Quick-Connect Propane Torch Kits

Extended-Reach Propane Torch Kits