Aluminum Schedule 40 Butt-Weld Pipe Fittings

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185 Products

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About Pipe and Fittings

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

Fitting Type

Pipe

Pair with fittings to transfer water, air, and other materials

Fitting Type

Adapter

Bridge the gap between pipe with different fitting connections

29 products

Reducer

Transition between pipe of different sizes

6 products

Medium-Pressure Aluminum Butt-Weld Pipe Fittings

Achieve maximum flow in medium-pressure lines. These fittings have beveled ends that, when flush to pipe, form a trough to create strong, smooth welds. Also known as Schedule 40 fittings, these are stronger than our thin-wall aluminum fittings. They resist rust in wet environments.

Straight Reducers

Butt Weld × Butt Weld

	Pipe Size
	(A)	(B)	Construction	Pipe Schedule	Material		Each
Butt Weld × Butt Weld



		3/4	1/2	Seamless	40	6061 Aluminum	43485K111	0000000


		1	3/4	Seamless	40	6061 Aluminum	43485K112	000000
		1 1/2	1	Seamless	40	6061 Aluminum	43485K113	000000
		2	1 1/2	Seamless	40	6061 Aluminum	43485K114	000000
		3	2	Seamless	40	6061 Aluminum	43485K115	000000
		4	3	Seamless	40	6061 Aluminum	43485K116	000000

90° Elbow Connectors

Butt Weld

	Construction	OD	Pipe Schedule	Material		Each
Butt Weld



	1/2	Seamless	27/32"	40	6061 Aluminum	43485K119	0000000


	3/4	Seamless	1 3/64"	40	6061 Aluminum	43485K121	000000
	1	Seamless	1 5/16"	40	6061 Aluminum	43485K122	000000
	1 1/4	Seamless	1 21/32"	40	6061 Aluminum	43485K123	000000
	1 1/2	Seamless	1 29/32"	40	6061 Aluminum	43485K124	000000
	2	Seamless	2 3/8"	40	6061 Aluminum	43485K125	000000
	2 1/2	Seamless	2 7/8"	40	6061 Aluminum	43485K126	000000
	3	Seamless	3 1/2"	40	6061 Aluminum	43485K127	000000
	4	Seamless	4 1/2"	40	6061 Aluminum	43485K131	000000

45° Elbow Connectors

Butt Weld

	Construction	OD	Pipe Schedule	Material		Each
Butt Weld



	1/2	Seamless	27/32"	40	6061 Aluminum	43485K149	000000


	3/4	Seamless	1 3/64"	40	6061 Aluminum	43485K151	00000
	1	Seamless	1 5/16"	40	6061 Aluminum	43485K152	00000
	1 1/4	Seamless	1 21/32"	40	6061 Aluminum	43485K153	000000
	1 1/2	Seamless	1 29/32"	40	6061 Aluminum	43485K154	00000
	2	Seamless	2 3/8"	40	6061 Aluminum	43485K155	00000
	2 1/2	Seamless	2 7/8"	40	6061 Aluminum	43485K156	000000
	3	Seamless	3 1/2"	40	6061 Aluminum	43485K157	000000
	4	Seamless	4 1/2"	40	6061 Aluminum	43485K161	000000

Tee Connectors

Butt Weld

	Construction	OD	Pipe Schedule	Material		Each
Butt Weld



	3/4	Seamless	1 3/64"	40	6061 Aluminum	43485K171	0000000


	1	Seamless	1 5/16"	40	6061 Aluminum	43485K172	000000
	1 1/4	Seamless	1 21/32"	40	6061 Aluminum	43485K173	000000
	1 1/2	Seamless	1 29/32"	40	6061 Aluminum	43485K174	000000
	2	Seamless	2 3/8"	40	6061 Aluminum	43485K175	000000
	2 1/2	Seamless	2 7/8"	40	6061 Aluminum	43485K176	000000
	3	Seamless	3 1/2"	40	6061 Aluminum	43485K177	000000
	4	Seamless	4 1/2"	40	6061 Aluminum	43485K181	000000

Caps

Butt Weld

	Construction	OD	Pipe Schedule	Material		Each
Butt Weld



	1	Seamless	1 5/16"	40	6061 Aluminum	43485K192	0000000


	1 1/4	Seamless	1 21/32"	40	6061 Aluminum	43485K193	000000
	1 1/2	Seamless	1 29/32"	40	6061 Aluminum	43485K194	000000
	2	Seamless	2 3/8"	40	6061 Aluminum	43485K195	000000
	2 1/2	Seamless	2 7/8"	40	6061 Aluminum	43485K196	000000
	3	Seamless	3 1/2"	40	6061 Aluminum	43485K197	000000
	4	Seamless	4 1/2"	40	6061 Aluminum	43485K201	000000

Low-Pressure Aluminum Threaded Pipe Fittings

Lightweight and rust resistant, these aluminum fittings are used in low-pressure flow applications. To prevent cracking, do not tighten more than a _1/4-turn past hand-tight.

Straight Adapters

NPT Female ×

Butt Weld

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

	Pipe Size
	(A)	(B)	Pressure Class	Material	Max. Pressure @ Temp.		Each
NPT Female × Butt Weld



		1/8	1/8	150	6061 Aluminum	150 psi @ 72° F	44705K916	00000


		1/4	1/4	150	6061 Aluminum	150 psi @ 72° F	44705K917	0000
		3/8	3/8	150	6061 Aluminum	150 psi @ 72° F	44705K918	0000
		1/2	1/2	150	6061 Aluminum	150 psi @ 72° F	44705K919	0000
		3/4	3/4	150	6061 Aluminum	150 psi @ 72° F	44705K911	0000
		1	1	150	6061 Aluminum	150 psi @ 72° F	44705K921	0000
		1 1/4	1 1/4	150	6061 Aluminum	150 psi @ 72° F	44705K922	0000
		1 1/2	1 1/2	150	6061 Aluminum	150 psi @ 72° F	44705K923	0000
		2	2	150	6061 Aluminum	150 psi @ 72° F	44705K924	00000
		2 1/2	2 1/2	150	6061 Aluminum	150 psi @ 72° F	44705K926	00000
		3	3	150	6061 Aluminum	150 psi @ 72° F	44705K927	00000


		4	4	150	6061 Aluminum	150 psi @ 72° F	44705K928	00000
		6	6	150	6061 Aluminum	150 psi @ 72° F	44705K931	000000

Straight Adapters for Tanks

NPTF Female ×

Butt Weld

Fittings for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum.

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

NPTF Thread—NPTF (Dryseal) threads are compatible with NPT threads.

	For Hole Diameter (B)	OD	For Tank OD (B)	For Tank Surface (B)	Material	Max. Pressure @ Temp.		Each
NPTF Female × Butt Weld



	1 1/4	1 3/4"	2 13/16"	36"	Curved	6061 Aluminum	Not Rated	1698T21	00000


	1 1/2	2"	3 1/4"	36"	Curved	6061 Aluminum	Not Rated	1698T22	0000

Straight Adapters with Extension for Tanks

NPT Female × Butt

Weld

Fittings for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum.

Adapters with extension fit tightly into the hole, which keeps the fitting steady during welding.

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

	For Hole Diameter (B)	OD	For Tank Surface (B)	Material	Max. Pressure @ Temp.		Each
NPT Female × Butt Weld



	1/8	7/8"	1 5/16"	Flat	6061 Aluminum	Not Rated	8694T41	00000


	1/4	7/8"	1 5/16"	Flat	6061 Aluminum	Not Rated	8694T42	00000
	3/8	1 3/16"	1 7/16"	Flat	6061 Aluminum	Not Rated	8694T43	00000
	1/2	1 1/8"	1 5/8"	Flat	6061 Aluminum	Not Rated	8694T44	00000
	3/4	1 5/16"	2"	Flat	6061 Aluminum	Not Rated	8694T45	00000
	1	1 11/16"	2 1/4"	Flat	6061 Aluminum	Not Rated	8694T46	00000
	1 1/4	1 15/16"	2 9/16"	Flat	6061 Aluminum	Not Rated	8694T47	00000
	1 1/2	2 1/4"	2 15/16"	Flat	6061 Aluminum	Not Rated	8694T48	00000
	2	2 5/8"	3 3/8"	Flat	6061 Aluminum	Not Rated	8694T49	00000
	3	3 11/16"	4 5/8"	Flat	6061 Aluminum	Not Rated	8694T51	000000
	4	4 3/4"	5 13/16"	Flat	6061 Aluminum	Not Rated	8694T52	000000

180° Bend Connectors

Image of Product. Front orientation. Pipe Traps. Low-Pressure Aluminum Threaded Pipe Fittings.

180° bend connectors are also known as U-bends.

	Material	Max. Pressure @ Temp.	Shape		Each
NPT Female



	1/2	356 Aluminum	150 psi @ 72° F	180° Bend	44705K479	000000


	3/4	356 Aluminum	150 psi @ 72° F	180° Bend	44705K481	00000
	1	356 Aluminum	150 psi @ 72° F	180° Bend	44705K482	00000

Low-Pressure Aluminum Unthreaded Pipe Flanges

Create an access point in a low-pressure line. Also known as Pressure Class 125 flanges, bolt two of the same size together with a gasket (not included). Flanges are made of aluminum, so they’re lightweight and won't rust in wet environments.

Flanges


Front	Flat Surface on Back

Butt-Weld Fitting Connection—Butt-weld flanges are also known as weld-neck flanges; the flange neck has a beveled end that, when flush to pipe, creates a trough for a strong weld.

	Pipe Size					Bolt Hole
	(A)	(B)	Flanged Connection Surface (B)	Flange OD	For Bolt Dia.	Dia.	No. Of	Bolt Circle Dia.	Pressure Class	Material	Max. Pressure @ Temp.		Each
Butt Weld



		1/2	1/2	Flat	3 1/2"	1/2"	5/8"	4	2 3/8"	125	356 Aluminum	150 psi @ 72° F	44705K543	000000


		3/4	3/4	Flat	3 7/8"	1/2"	5/8"	4	2 3/4"	125	356 Aluminum	150 psi @ 72° F	44705K544	00000
		1	1	Flat	4 1/4"	1/2"	5/8"	4	3 1/8"	125	356 Aluminum	150 psi @ 72° F	44705K545	00000
		1 1/2	1 1/2	Flat	5"	1/2"	5/8"	4	3 7/8"	125	356 Aluminum	150 psi @ 72° F	44705K547	000000
		2	2	Flat	6"	5/8"	3/4"	4	4 3/4"	125	356 Aluminum	150 psi @ 72° F	44705K548	000000
		2 1/2	2 1/2	Flat	7"	5/8"	3/4"	4	5 1/2"	125	356 Aluminum	150 psi @ 72° F	44705K549	000000
		3	3	Flat	7 1/2"	5/8"	3/4"	4	6"	125	356 Aluminum	150 psi @ 72° F	44705K551	000000
		4	4	Flat	9"	5/8"	3/4"	8	7 1/2"	125	356 Aluminum	150 psi @ 72° F	44705K552	000000
		6	6	Flat	11"	3/4"	7/8"	8	9 1/2"	125	356 Aluminum	150 psi @ 72° F	44705K553	000000

Standard-Wall Aluminum Unthreaded Pipe Nipples and Pipe

Made of aluminum, this pipe is lightweight and won't rust when exposed to moisture. Also known as Schedule 40, it is for use in low-pressure applications. Weld it to fittings and additional lengths of pipe for stronger joints that are less likely to leak than threaded connections.

Pipe—Unthreaded

Pipe

Seamless—Pipe has a smooth interior for unrestricted flow and is stronger than welded pipe.

	Lg.	Construction	Pipe Schedule	Material		Each
Butt Weld/Socket Connect/Weld Socket Male







				1/8 Pipe Size

				4"	Seamless	40	6061 Aluminum	5038K514	00000


				6"	Seamless	40	6061 Aluminum	5038K516	0000
				8"	Seamless	40	6061 Aluminum	5038K517	00000
				10"	Seamless	40	6061 Aluminum	5038K518	00000
				1 ft.	Seamless	40	6061 Aluminum	5038K152	00000
				1 1/2 ft.	Seamless	40	6061 Aluminum	5038K519	00000
				3 ft.	Seamless	40	6061 Aluminum	5038K51	00000
				6 ft.	Seamless	40	6061 Aluminum	5038K65	00000




						1/4 Pipe Size

						1 1/2"	Seamless	40	6061 Aluminum	5038K521	0000


						2"	Seamless	40	6061 Aluminum	5038K522	0000
						4"	Seamless	40	6061 Aluminum	5038K524	0000
						6"	Seamless	40	6061 Aluminum	5038K526	0000
						1 ft.	Seamless	40	6061 Aluminum	5038K162	00000
						3 ft.	Seamless	40	6061 Aluminum	5038K52	00000
						6 ft.	Seamless	40	6061 Aluminum	5038K19	00000




								3/8 Pipe Size

								1 1/2"	Seamless	40	6061 Aluminum	5038K531	0000


								2"	Seamless	40	6061 Aluminum	5038K532	0000
								3"	Seamless	40	6061 Aluminum	5038K533	0000
								6"	Seamless	40	6061 Aluminum	5038K536	00000
								8"	Seamless	40	6061 Aluminum	5038K537	00000
								10"	Seamless	40	6061 Aluminum	5038K538	00000
								1 ft.	Seamless	40	6061 Aluminum	5038K172	00000
								1 1/2 ft.	Seamless	40	6061 Aluminum	5038K539	00000
								3 ft.	Seamless	40	6061 Aluminum	5038K53	00000
								6 ft.	Seamless	40	6061 Aluminum	5038K12	00000




										1/2 Pipe Size

										2"	Seamless	40	6061 Aluminum	5038K542	0000


										3"	Seamless	40	6061 Aluminum	5038K543	0000
										4"	Seamless	40	6061 Aluminum	5038K544	0000
										5"	Seamless	40	6061 Aluminum	5038K545	00000
6"										Seamless	40	6061 Aluminum	5038K546	00000
8"	Seamless									40	6061 Aluminum	5038K547	00000
10"	Seamless									40	6061 Aluminum	5038K548	00000
1 ft.	Seamless									40	6061 Aluminum	5038K182	00000
1 1/2 ft.	Seamless									40	6061 Aluminum	5038K549	00000
3 ft.	Seamless	40								6061 Aluminum	5038K54	00000
6 ft.	Seamless	40	6061 Aluminum							5038K13	00000




		3/4 Pipe Size

		1 1/2"	Seamless							40	6061 Aluminum	5038K551	0000


		3"	Seamless							40	6061 Aluminum	5038K553	0000
		4"	Seamless							40	6061 Aluminum	5038K554	0000
		5"	Seamless							40	6061 Aluminum	5038K555	00000
		10"	Seamless							40	6061 Aluminum	5038K558	00000
		1 ft.	Seamless							40	6061 Aluminum	5038K222	00000
		1 1/2 ft.	Seamless							40	6061 Aluminum	5038K559	00000
		3 ft.	Seamless	40						6061 Aluminum	5038K55	00000
		6 ft.	Seamless	40	6061 Aluminum					5038K14	00000




				1 Pipe Size

				2"	Seamless					40	6061 Aluminum	5038K561	0000


				4"	Seamless					40	6061 Aluminum	5038K563	00000
				5"	Seamless					40	6061 Aluminum	5038K564	00000
				6"	Seamless					40	6061 Aluminum	5038K565	00000
				8"	Seamless					40	6061 Aluminum	5038K566	00000
				10"	Seamless					40	6061 Aluminum	5038K567	00000
				1 ft.	Seamless	40				6061 Aluminum	5038K231	00000
				1 1/2 ft.	Seamless	40	6061 Aluminum			5038K568	00000
				3 ft.	Seamless	40	6061 Aluminum			5038K56	00000
				6 ft.	Seamless	40	6061 Aluminum			5038K21	00000




						1 1/4 Pipe Size

						2"	Seamless			40	6061 Aluminum	5038K569	0000


						3"	Seamless			40	6061 Aluminum	5038K571	00000
						4"	Seamless			40	6061 Aluminum	5038K572	00000
						5"	Seamless			40	6061 Aluminum	5038K573	00000
						6"	Seamless			40	6061 Aluminum	5038K574	00000
						8"	Seamless			40	6061 Aluminum	5038K575	00000
						10"	Seamless	40		6061 Aluminum	5038K576	00000
						1 ft.	Seamless	40	6061 Aluminum	5038K241	00000
						1 1/2 ft.	Seamless	40	6061 Aluminum	5038K577	00000
						3 ft.	Seamless	40	6061 Aluminum	5038K57	00000
						6 ft.	Seamless	40	6061 Aluminum	5038K22	000000




								1 1/2 Pipe Size

								2"	Seamless	40	6061 Aluminum	5038K578	0000


								3"	Seamless	40	6061 Aluminum	5038K579	00000
								4"	Seamless	40	6061 Aluminum	5038K581	00000
								6"	Seamless	40	6061 Aluminum	5038K583	00000
8"								Seamless	40	6061 Aluminum	5038K584	00000
10"	Seamless							40	6061 Aluminum	5038K585	00000
1 ft.	Seamless							40	6061 Aluminum	5038K251	00000
1 1/2 ft.	Seamless							40	6061 Aluminum	5038K586	00000
3 ft.	Seamless							40	6061 Aluminum	5038K58	00000
6 ft.	Seamless							40	6061 Aluminum	5038K23	000000




								2 Pipe Size

								3"	Seamless	40	6061 Aluminum	5038K587	00000


								4"	Seamless	40	6061 Aluminum	5038K588	00000
								5"	Seamless	40	6061 Aluminum	5038K589	00000
		6"						Seamless	40	6061 Aluminum	5038K591	00000
		1 ft.	Seamless					40	6061 Aluminum	5038K322	00000
		1 1/2 ft.	Seamless					40	6061 Aluminum	5038K592	00000
		3 ft.	Seamless					40	6061 Aluminum	5038K59	000000
		6 ft.	Seamless					40	6061 Aluminum	5038K24	000000




								2 1/2 Pipe Size

								4"	Seamless	40	6061 Aluminum	5038K593	00000


								6"	Seamless	40	6061 Aluminum	5038K595	00000
								8"	Seamless	40	6061 Aluminum	5038K596	00000
								1 ft.	Seamless	40	6061 Aluminum	5038K332	00000
								3 ft.	Seamless	40	6061 Aluminum	5038K61	000000
				6 ft.				Seamless	40	6061 Aluminum	5038K25	000000




								3 Pipe Size

								4"	Seamless	40	6061 Aluminum	5038K597	00000


								6"	Seamless	40	6061 Aluminum	5038K599	00000
								1 ft.	Seamless	40	6061 Aluminum	5038K342	00000
								1 1/2 ft.	Seamless	40	6061 Aluminum	5038K613	000000
								3 ft.	Seamless	40	6061 Aluminum	5038K62	000000
								6 ft.	Seamless	40	6061 Aluminum	5038K26	000000




						4 Pipe Size

						4"	Seamless			40	6061 Aluminum	5038K614	00000


						5"	Seamless			40	6061 Aluminum	5038K615	00000
						6"	Seamless			40	6061 Aluminum	5038K616	00000
						8"	Seamless			40	6061 Aluminum	5038K617	00000
						10"	Seamless			40	6061 Aluminum	5038K618	000000
						1 ft.	Seamless			40	6061 Aluminum	5038K352	000000
						1 1/2 ft.	Seamless			40	6061 Aluminum	5038K619	000000
						3 ft.	Seamless			40	6061 Aluminum	5038K63	000000
						6 ft.	Seamless			40	6061 Aluminum	5038K28	000000




										6 Pipe Size

1 ft.	Seamless									40	6061 Aluminum	5038K715	000000


3 ft.	Seamless									40	6061 Aluminum	5038K717	000000
6 ft.	Seamless									40	6061 Aluminum	5038K179	000000