Aluminum Pipe Half Couplings

	Pipe Size Pipe Size

1/8

1/4

	For Pipe Schedule For Pipe Schedule


40	80

	Connection Style Connection Style

Butt Weld

Threaded

	Length Length

	Class Class

150

3000

	For Use With For Use With

Air

Water

Oil

	Specifications Met Specifications Met

	Construction Construction

Welded

Seamless

	Maximum Pressure Maximum Pressure

150 psi @ 72° F

3,000 psi @ 72° F

	Wall Thickness Wall Thickness

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

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17 Products

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.

Low-Pressure Aluminum
Threaded Pipe Fittings

In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.

Threaded female x butt weld straight adapters are also known as half couplings.

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

Straight Adapters

For Use With: Air, Oil, Water
Specifications Met: ASME B1.20.1, MIL-DTL-52618
Class: 150
Pipe Nipples and Pipe: Use Schedule 40 aluminum
Flanges: Use Class 125 aluminum

NPT Female × Butt Weld
Pipe Size	Max. Pressure		Each
1/8	150 psi @ 72° F	000000000	00000
1/4	150 psi @ 72° F	000000000	0000
3/8	150 psi @ 72° F	000000000	0000
1/2	150 psi @ 72° F	000000000	0000
3/4	150 psi @ 72° F	00000000	0000
1	150 psi @ 72° F	000000000	0000
1 1/4	150 psi @ 72° F	000000000	0000
1 1/2	150 psi @ 72° F	000000000	0000
2	150 psi @ 72° F	000000000	0000
2 1/2	150 psi @ 72° F	000000000	00000
3	150 psi @ 72° F	000000000	00000
4	150 psi @ 72° F	000000000	00000
6	150 psi @ 72° F	000000000	000000

High-Pressure Aluminum
Threaded Pipe Fittings

Also known as Class 3000 fittings, these have the highest pressure rating of all the aluminum pipe fittings we offer. They are lightweight with good corrosion resistance.