Galvanized Iron Pipe Unions

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50 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.

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Commonly used in low-pressure water supply and utility piping systems, these galvanized fittings won't rust in wet and outdoor environments.

Union Straight Connectors with Gasket

Exploded View

Union fittings separate into three pieces so you can access your line without unthreading pipe connections.

	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Gasket Material	Certification		Each
NPT Female



	1/8	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	—	4638K402	000000


	1/4	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	UL Listed	4638K731	00000
	3/8	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	UL Listed	4638K732	00000
	1/2	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	UL Listed	4638K733	00000
	3/4	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	UL Listed	4638K734	00000
	1	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	UL Listed	4638K735	00000
	1 1/4	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	UL Listed	4638K736	00000
	1 1/2	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	UL Listed	4638K737	00000
	2	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	UL Listed	4638K738	00000
	2 1/2	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	—	4638K741	000000
	3	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	—	4638K742	000000


	4	150	Hex	Galvanized Iron	300 psi @ 72° F	150 psi @ 350° F	Brass	—	4638K219	000000


	BSPT Female



			1/4	150	Hex	Galvanized Iron	150 psi @ 72° F	150 psi @ 360° F	Brass	—	4888K162	00000


			3/8	150	Hex	Galvanized Iron	150 psi @ 72° F	150 psi @ 360° F	Brass	—	4888K163	00000
			1/2	150	Hex	Galvanized Iron	150 psi @ 72° F	150 psi @ 360° F	Brass	—	4888K164	00000
			3/4	150	Hex	Galvanized Iron	150 psi @ 72° F	150 psi @ 360° F	Brass	—	4888K165	00000
			1	150	Hex	Galvanized Iron	150 psi @ 72° F	150 psi @ 360° F	Brass	—	4888K166	00000
			1 1/2	150	Hex	Galvanized Iron	150 psi @ 72° F	150 psi @ 360° F	Brass	—	4888K168	00000
			2	150	Hex	Galvanized Iron	150 psi @ 72° F	150 psi @ 360° F	Brass	—	4888K169	00000

180° Bend Connectors

Image of Product. Front orientation. Pipe Traps. Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings.

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

	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Certification	Shape		Each
NPT Female



	3/4	Galvanized Iron	150 psi @ 72° F	150 psi @ 350° F	UL Listed	180° Bend	4638K299	000000


	1	Galvanized Iron	150 psi @ 72° F	150 psi @ 350° F	UL Listed	180° Bend	4638K385	00000
	1 1/2	Galvanized Iron	150 psi @ 72° F	150 psi @ 350° F	UL Listed	180° Bend	4638K556	000000
	2	Galvanized Iron	150 psi @ 72° F	150 psi @ 350° F	UL Listed	180° Bend	4638K557	000000

Medium-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Stronger than our low-pressure galvanized fittings, these resist rust in wet and outdoor environments.

Union Straight Connectors

Female

Union fittings separate into three pieces so you can access your line without unthreading pipe connections.

	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Certification		Each
NPT Female



	1/4	300	Hex	Galvanized Iron	600 psi @ 72° F	230 psi @ 550° F	FM Approved, UL Listed	2066N43	000000


	3/8	300	Hex	Galvanized Iron	600 psi @ 72° F	230 psi @ 550° F	FM Approved, UL Listed	2066N44	00000
	1/2	300	Hex	Galvanized Iron	600 psi @ 72° F	230 psi @ 550° F	FM Approved, UL Listed	2066N45	00000
	3/4	300	Hex	Galvanized Iron	600 psi @ 72° F	230 psi @ 550° F	FM Approved, UL Listed	2066N46	00000
	1	300	Hex	Galvanized Iron	600 psi @ 72° F	230 psi @ 550° F	FM Approved, UL Listed	2066N47	00000
	1 1/4	300	Hex	Galvanized Iron	600 psi @ 72° F	230 psi @ 550° F	FM Approved, UL Listed	2066N48	00000
	1 1/2	300	Hex	Galvanized Iron	600 psi @ 72° F	230 psi @ 550° F	FM Approved, UL Listed	2066N49	000000
	2	300	Hex	Galvanized Iron	600 psi @ 72° F	230 psi @ 550° F	FM Approved, UL Listed	2066N5	000000

Low-Pressure Threaded Pipe Fittings for Joining Dissimilar Metals

Connect different metals in a piping or plumbing system without causing corrosion. These fittings have a plastic sleeve that creates a barrier and electrically insulates the joint.

Union Straight Connectors with Gasket

Exploded View

Union fittings separate into three pieces so you can access your line without unthreading pipe connections.

	Pipe Size				Material
	(A)	(B)	Lg.	Body Shape	(A)	(B)	Max. Pressure @ Temp.	Gasket Material		Each
NPT Female × NPT Female



		1/2	1/2	2 1/4"	Hex	Galvanized Iron	Galvanized Iron	250 psi @ 72° F	Buna-N	4838K81	000000


		3/4	3/4	2 1/4"	Hex	Galvanized Iron	Galvanized Iron	250 psi @ 72° F	Buna-N	4838K82	00000
		1	1	2 1/2"	Hex	Galvanized Iron	Galvanized Iron	250 psi @ 72° F	Buna-N	4838K83	00000
		1 1/4	1 1/4	2 3/4"	Hex	Galvanized Iron	Galvanized Iron	250 psi @ 72° F	Buna-N	4838K84	00000
		1 1/2	1 1/2	2 3/4"	Hex	Galvanized Iron	Galvanized Iron	250 psi @ 72° F	Buna-N	4838K85	00000
		2	2	3 1/8"	Hex	Galvanized Iron	Galvanized Iron	250 psi @ 72° F	Buna-N	4838K86	000000

Union Straight Adapters with Gasket

NPT Female × Socket Connect Female (Exploded View)

NPT Male x Socket Connect Female (Exploded View)

Union fittings separate into three pieces so you can access your line without unthreading pipe connections.

					Material
	Pipe Size (A)	For Tube OD (B)	Lg.	Body Shape	(A)	(B)	Max. Pressure @ Temp.	Gasket Material		Each
NPT Female × Socket Connect Female



		1/2	1/2"	1 7/8"	Hex	Iron	Brass	250 psi @ 72° F	Buna-N	4838K101	000000


		NPT Male × Socket Connect Female



				1/2	5/8"	2 5/8"	Hex	Iron	Brass	250 psi @ 72° F	Buna-N	4838K102	00000


				3/4	5/8"	3"	Hex	Iron	Brass	250 psi @ 72° F	Buna-N	4838K105	00000
				3/4	7/8"	2 15/16"	Hex	Iron	Brass	250 psi @ 72° F	Buna-N	4838K106	00000
				3/4	7/8"	3"	Hex	Iron	Brass	250 psi @ 72° F	Buna-N	4838K103	00000

High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

A galvanized finish gives these fittings better corrosion resistance than our plain steel high-pressure fittings. Also known as Pressure Class 3000 fittings, they have excellent strength to handle high-pressure applications.

Union Straight Connectors

Exploded View

Union fittings separate into three pieces so you can access your line without unthreading pipe connections.

	Dash Size	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPT Female



	1/4	04	3000	Hex	Galvanized Steel	3,000 psi @ 72° F	300 psi @ 360° F	7739K172	000000


	3/8	06	3000	Hex	Galvanized Steel	3,000 psi @ 72° F	300 psi @ 360° F	7739K173	00000
	1/2	08	3000	Hex	Galvanized Steel	3,000 psi @ 72° F	300 psi @ 360° F	7739K174	00000
	3/4	12	3000	Hex	Galvanized Steel	3,000 psi @ 72° F	300 psi @ 360° F	7739K175	00000
	1	16	3000	Hex	Galvanized Steel	3,000 psi @ 72° F	300 psi @ 360° F	7739K176	00000
	1 1/4	20	3000	Hex	Galvanized Steel	3,000 psi @ 72° F	300 psi @ 360° F	7739K177	00000
	1 1/2	24	3000	Hex	Galvanized Steel	3,000 psi @ 72° F	300 psi @ 360° F	7739K178	00000
	2	32	3000	Hex	Galvanized Steel	3,000 psi @ 72° F	300 psi @ 360° F	7739K179	00000