CGA Number 033 Hose Fittings

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Minimum Temperature

REACH

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DFARS Specialty Metals

Exempt

Maximum Pressure @ Temperature

200 psi @ 72° F

Maximum Temperature

Less than 200° F

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

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7 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Threaded Hose Fittings for Compressed Gas

Use these fittings to connect welding hose to pressure regulators and torches. They are also known as CGA (Compressed Gas Association) fittings. Fittings 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.

Straight Connectors, Female Hose

Maximum Pressure: 200 psi @ 72° F
Maximum Temperature: 120° F

Brass
CGA Number	Gas Fitting Size	Thread Size	Thread Type	Thread Direction	For Use With		Each
033	B	5/8"-18	UN/UNF (CGA)	Left Hand	Air, Water	7920A7	00000

Nuts for Barbed Hose Fittings for Compressed Gas

Also known as CGA (Compressed Gas Association) nuts, these are designed for low-pressure welding applications downstream of your tank and pressure regulator. Slide a barbed hose adapter for compressed gas into a male or female nut to make a threaded connection to torches or pressure regulators.

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

Brass nuts have good corrosion resistance. Note: Nuts have a CGA number that corresponds to a specific type of gas. Choose a nut with the same CGA number as your tank and other system components.

Male

Maximum Pressure: 200 psi @ 72° F
Maximum Temperature: 120° F

Brass
CGA Number	Gas Fitting Size	Thread Size	Thread Type	Thread Direction	For Use With		Each
032	B	5/8"-18	UN/UNF (CGA)	Right Hand	Argon, Helium, Krypton, Neon, Nitrogen, Xenon	7919A17	00000
033	B	5/8"-18	UN/UNF (CGA)	Left Hand	Air, Water	7919A16	0000

Barbed Hose Fittings for Compressed Gas

Commonly used in low-pressure welding applications, these fittings connect downstream of your tank and pressure regulator. Slide the barbed end into rubber hose and secure with a crimp-on hose ferrule. Fittings are brass for good corrosion resistance.

Adapters let you adapt to a threaded end so you can connect welding hose to torches or pressure regulators. They consist of a barbed shaft with a rounded end that sits inside a threaded CGA nut (sold separately) so you can make a threaded hose connection.

Straight Adapters, Barbed Hose × Threaded Hose

Maximum Pressure: 200 psi @ 72° F
Maximum Temperature: 120° F
Attachment Type: Use Crimp-On Hose Ferrules

Adapters						Nuts with Right-Hand Threads			Nuts with Left-Hand Threads
For Hose ID	For CGA Number	Gas Fitting Size	For Use With		Each	CGA Number		Each	CGA Number		Each
Brass
1/8"	032, 033	B	Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon	7919A18	00000	032	7919A17	00000	033	7919A16	00000
3/16"	032, 033	B	Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon	7919A21	0000	032	7919A17	0000	033	7919A16	0000
1/4"	032, 033	B	Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon	7919A19	0000	032	7919A17	0000	033	7919A16	0000
3/8"	032, 033	B	Air, Argon, Helium, Krypton, Neon, Nitrogen, Water, Xenon	7919A22	0000	032	7919A17	0000	033	7919A16	0000