ASTM A126 Pipe Fittings | McMaster-Carr

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188 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.

Fitting Type

Bridge the gap between pipe with different fitting connections

56 products

Fitting Type

Reducing Adapter

Join pipe of different sizes and fitting connections

56 products

Bushing

Connect pipe of different sizes while taking up less space than reducers

56 products

FM-Approved Low-Pressure Iron and Steel Threaded Pipe Fittings

Suitable for use in fire-protection applications, these pipe fittings are made of cast iron, so they are brittle and can be quickly opened with the strike of a sledge hammer. They are also known as Pressure Class 125 fittings. Use in noncorrosive environments.

Bushing Straight Reducing Adapters

Male × Female (Hex)

	Pipe Size
	(A)	(B)	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Certification		Each
NPT Male × NPT Female



		1 1/4	3/8	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K284	00000


		1 1/4	1/2	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K283	0000
		1 1/4	3/4	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K296	0000
		1 1/2	3/8	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K289	00000
		1 1/2	1/2	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K288	0000
		1 1/2	3/4	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K287	0000
		1 1/2	1	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K286	0000
		2	1/2	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K295	00000
		2	3/4	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K294	00000
		2	1	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K293	00000
		2	1 1/4	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K292	00000


		2 1/2	1 1/2	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K411	00000
		3	2	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K412	00000
		3	2 1/2	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K413	00000
		4	3	125	Hex	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	44605K414	00000

Straight Reducers

NPT Female × NPT Female

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



		3/4	1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K53	000000


		1	1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K11	00000
		1	3/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K12	00000
		1 1/4	3/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K54	00000
		1 1/4	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K13	00000
		1 1/2	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K55	00000
		1 1/2	1 1/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K14	00000
		2	1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K58	00000
		2	3/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K57	00000
		2	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K15	00000
		2	1 1/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K56	00000


		2	1 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K16	00000
		2 1/2	2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K17	00000
		3	2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K18	000000

Offset Straight Reducers

NPT Female × NPT Female

Offset straight reducers are also known as eccentric reducers; they connect one pipe to another smaller-diameter pipe and have the centers offset so your line can drain.

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



		3/4	1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K62	000000


		1	1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K66	00000
		1	3/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K64	00000
		1 1/4	1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K73	00000
		1 1/4	3/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K71	00000
		1 1/4	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K67	00000
		1 1/2	1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K81	00000
		1 1/2	3/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K78	00000
		1 1/2	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K77	00000
		1 1/2	1 1/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K75	00000
		2	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K85	000000


		2	1 1/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K84	000000
		2	1 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K82	000000

90° Elbow Connectors

NPT Female

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



	1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K21	00000


	3/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K22	0000
	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K23	0000
	1 1/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K24	00000
	1 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K25	00000
	2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K26	00000
	2 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K27	00000
	3	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K28	000000
	4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K49	000000

45° Elbow Connectors

NPT Female

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



	1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K31	000000


	3/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K32	00000
	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K33	00000
	1 1/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K34	00000
	1 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K35	00000
	2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K36	00000
	2 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K37	00000
	3	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K38	000000
	4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K51	000000

Tee Connectors

NPT Female

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



	1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K41	000000


	3/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K42	00000
	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K43	00000
	1 1/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K44	00000
	1 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K45	00000
	2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K46	00000
	2 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K47	00000
	3	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K48	000000
	4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K52	000000

Inline Tee Reducers

NPT Female

Inline tees are also known as branch tees.

	Pipe Size
	(A)	(B)	(C)	Pressure Class	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Certification		Each
NPT Female × NPT Female × NPT Female



		3/4	1/2	3/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K61	000000


		1	1/2	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K65	00000
		1	3/4	1	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K63	00000
		1 1/4	1/2	1 1/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K68	00000
		1 1/4	3/4	1 1/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K72	00000
		1 1/4	1	1 1/4	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K69	00000
		1 1/2	1/2	1 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K83	00000
		1 1/2	3/4	1 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K79	00000
		1 1/2	1	1 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K76	00000
		1 1/2	1 1/4	1 1/2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K74	00000
		2	1/2	2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K96	00000


		2	3/4	2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K94	00000
		2	1	2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K92	00000
		2	1 1/4	2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K89	00000
		2	1 1/2	2	125	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K86	00000

Square-Drive Plugs

NPT Male

	Construction	Pressure Class	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Certification		Each
NPT Male



	1	Solid	125	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K105	000000


	1 1/4	Solid	125	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K106	00000
	1 1/2	Solid	125	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K107	00000
	2	Solid	125	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K108	00000
	2 1/2	Solid	125	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K109	00000
	3	Solid	125	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K111	00000
	4	Solid	125	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K112	000000

External-Square-Drive Plugs

NPT Male

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



	1	Solid	125	Square	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K113	00000


	1 1/4	Solid	125	Square	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K114	0000
	1 1/2	Solid	125	Square	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K115	0000
	2	Solid	125	Square	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K116	00000
	2 1/2	Solid	125	Square	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K117	00000
	3	Solid	125	Square	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K118	00000
	4	Solid	125	Square	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68115K119	00000

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

The galvanized finish on these fittings provides fair corrosion resistance. Fittings are for use in low-pressure applications.

Bushing Straight Reducing Adapters


Male x Female	Male x Female

	Pipe Size
	(A)	(B)	Pressure Class	Body Shape	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Certification		Each
NPT Male × NPT Female



		1 1/4	3/8	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	—	4638K061	00000


		1 1/2	1/4	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K945	00000
		1 1/2	3/8	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	—	4638K063	00000
		1 1/2	1/2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	—	4638K062	0000
		2	1/4	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K949	00000
		2	3/8	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K948	00000
		2	1/2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	—	4638K064	00000
		2	3/4	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	—	4638K065	00000
		2 1/2	1/2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K955	00000
		2 1/2	3/4	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K954	00000
		2 1/2	1	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K953	00000


		2 1/2	1 1/4	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K952	00000
		2 1/2	1 1/2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	—	4638K058	00000
		3	1/2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K963	00000
		3	3/4	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K962	00000
		3	1	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K961	00000
		3	1 1/4	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K959	00000
		3	1 1/2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K958	00000
		3	2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	—	4638K059	00000
		3	2 1/2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	—	4638K06	00000
		3 1/2	1	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K969	00000


		3 1/2	1 1/4	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K968	00000
		3 1/2	1 1/2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K967	00000
		3 1/2	2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K966	00000
		3 1/2	3	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K964	00000
		4	1	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K976	000000
		4	1 1/4	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K975	000000
		4	1 1/2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K974	000000
		4	2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K973	00000
		4	2 1/2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K972	000000
		4	3	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K971	00000


		6	2	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K979	000000
		6	3	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K978	000000
		6	4	125	Hex	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K977	000000

External-Square-Drive Plugs

Threaded

Fitting

Connection, Male

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



	2 1/2	Hollow	125	Square	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K934	000000


	3	Hollow	125	Square	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K935	00000
	3 1/2	Hollow	125	Square	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K936	00000
	4	Hollow	125	Square	Galvanized Iron	125 psi @ 72° F	125 psi @ 350° F	UL Listed	4638K939	000000

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

Locknuts

NPSL Thread—NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.

	Finished Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.		Each
NPSL Female



	1 1/4	Galvanized Iron	Not Rated	Not Rated	4638K617	000000


	1 1/2	Galvanized Iron	Not Rated	Not Rated	4638K618	00000
	2	Galvanized Iron	Not Rated	Not Rated	4638K619	00000

Medium-Pressure Iron and Steel Threaded Pipe Fittings

With better strength than our low-pressure iron and steel pipe fittings, these can handle medium-pressure applications. They are for use in noncorrosive environments.

External-Square-Drive Plugs

NPT Male

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



	1/2	Solid	300	Square	Iron	400 psi @ 72° F	300 psi @ 550° F	UL Listed	4627K333	00000


	3/4	Solid	300	Square	Iron	400 psi @ 72° F	300 psi @ 550° F	UL Listed	4627K334	0000
	1	Solid	300	Square	Iron	400 psi @ 72° F	300 psi @ 550° F	UL Listed	4627K335	0000
	1 1/4	Solid	300	Square	Iron	400 psi @ 72° F	300 psi @ 550° F	UL Listed	4627K336	00000
	1 1/2	Solid	300	Square	Iron	400 psi @ 72° F	300 psi @ 550° F	UL Listed	4627K337	00000
	2	Solid	300	Square	Iron	400 psi @ 72° F	300 psi @ 550° F	UL Listed	4627K338	00000
	2 1/2	Solid	300	Square	Iron	400 psi @ 72° F	300 psi @ 550° F	UL Listed	4627K416	00000

FM-Approved Low-Pressure Iron and Steel Flanged-End Pipe Fittings

FM approved, these fittings are suitable for use in fire-protection systems. All have flat-surface flanged ends that only mate to another same-size flat-surface flange, pump, or valve with a gasket (sold separately) to create an access point in a pipeline. Use them in noncorrosive areas.

Straight Reducers

Image of Product. Front orientation. Contains Annotated. Pipe and Fittings. FM-Approved Low-Pressure Iron and Steel Flanged-End Pipe Fittings, Straight Reducers, Flanged × Flanged.

Flanged × Flanged

	Pipe Size		Flange OD
	(A)	(B)	(A)	(B)	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Mil. Spec.	Certification		Each
Flanged × Flanged



		2 1/2	2	7"	6"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T19	0000000


		3	2	7 1/2"	6"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T22	000000
		3	2 1/2	7 1/2"	7"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T21	000000
		4	3	9"	7 1/2"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T23	000000

90° Elbow Connectors

Flanged

	Flange OD	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Mil. Spec.	Certification		Each
Flanged



	2	6"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T11	0000000


	2 1/2	7"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T12	000000
	3	7 1/2"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T13	000000
	4	9"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T14	000000

45° Elbow Connectors

Flanged

	Flange OD	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Mil. Spec.	Certification		Each
Flanged



	3	7 1/2"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T17	0000000


	4	9"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T18	000000

Tee Connectors

Flanged

	Flange OD	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Mil. Spec.	Certification		Each
Flanged



	2	6"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T24	0000000


	2 1/2	7"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T25	000000
	3	7 1/2"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T26	000000
	4	9"	Iron	150 psi @ 72° F	125 psi @ 350° F	Fed. Spec. WW-F-406	FM Approved, UL Listed	1117T27	000000

FM-Approved Low-Pressure Iron and Steel Threaded Pipe Flanges

Suitable for use in fire-protection applications, these flanges are brittle and can be quickly opened with the strike of a sledge hammer. Bolt two flanges of the same size together with a gasket (sold separately) to create an access point within a line. Use in noncorrosive environments.

Cast Flanges

Front

Cast flanges are also called MSS flanges.

	Pipe Size					Bolt Hole
	(A)	(B)	Flanged Connection Surface (B)	Flange OD	For Bolt Dia.	Dia.	No. Of	Bolt Circle Dia.	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Certification		Each
NPT Female



		3/4	3/4	Flat	3 7/8"	1/2"	5/8"	4	2 3/4"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved	68185K111	000000


		1	1	Flat	4 1/4"	1/2"	5/8"	4	3 1/8"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68185K112	00000
		1 1/4	1 1/4	Flat	4 5/8"	1/2"	5/8"	4	3 1/2"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68185K113	00000
		1 1/2	1 1/2	Flat	5"	1/2"	5/8"	4	3 7/8"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68185K114	00000
		2	2	Flat	6"	5/8"	3/4"	4	4 3/4"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68185K115	00000
		2 1/2	2 1/2	Flat	7"	5/8"	3/4"	4	5 1/2"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68185K116	00000
		3	3	Flat	7 1/2"	5/8"	3/4"	4	6"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68185K117	00000
		4	4	Flat	9"	5/8"	3/4"	8	7 1/2"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68185K118	000000
		5	5	Flat	10"	3/4"	7/8"	8	8 1/2"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68185K131	000000
		6	6	Flat	11"	3/4"	7/8"	8	9 1/2"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68185K132	000000
		8	8	Flat	13 1/2"	3/4"	7/8"	8	11 3/4"	Cast Iron	125 psi @ 72° F	125 psi @ 350° F	FM Approved, UL Listed	68185K133	000000

Cast Reducing Flanges


Reducing Flange	Front

Cast flanges are also called MSS flanges.

Reducing flanges allow you to transition your system to a smaller pipe size; attach to a flange with a larger pipe size but with the same flange dimensions.

						Bolt Hole
	Pipe Size (A)	For Flange Pipe Size (B)	Flanged Connection Surface (B)	Flange OD	For Bolt Dia.	Dia.	No. Of	Bolt Circle Dia.	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Certification		Each
NPT Female



		2	2 1/2	Flat	7"	5/8"	3/4"	4	5 1/2"	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved	68185K101	0000000


		2	3	Flat	7 1/2"	5/8"	3/4"	4	6"	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved	68185K102	000000
		2	4	Flat	9"	5/8"	3/4"	8	7 1/2"	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved	68185K103	000000
		3	4	Flat	9"	5/8"	3/4"	8	7 1/2"	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved	68185K104	000000
		4	6	Flat	11"	3/4"	7/8"	8	9 1/2"	Cast Iron	175 psi @ 72° F	125 psi @ 350° F	FM Approved	68185K105	000000

FM-Approved Low-Pressure Iron and Steel Unthreaded Pipe Flanges

FM-approved for fire protection applications, these flanges are cast iron, so they're brittle and can be quickly opened by hitting them with a sledge hammer. Bolt them together with a gasket (not included) to create an access point within a low-pressure pipe line. All are cap flanges, which are also known as blind flanges. Use them in noncorrosive environments.

Cast Blind Flanges


Front	Back

Cast flanges are also called MSS flanges.

					Bolt Hole
	Pipe Size	Flanged Connection Surface	Flange OD	For Bolt Dia.	Dia.	No. Of	Bolt Circle Dia.	Pressure Class	Material	Max. Pressure @ Temp.	Max. Steam Pressure @ Temp.	Certification		Each
Flanged



		1	Flat	4 1/4"	1/2"	5/8"	4	3 1/8"	125	Cast Iron	200 psi @ 72° F	165 psi @ 300° F	FM Approved	4824N11	000000


		1 1/2	Flat	5"	1/2"	5/8"	4	3 7/8"	125	Cast Iron	200 psi @ 72° F	165 psi @ 300° F	FM Approved	4824N12	00000
		2	Flat	6"	5/8"	3/4"	4	4 3/4"	125	Cast Iron	200 psi @ 72° F	165 psi @ 300° F	FM Approved	4824N13	00000
		2 1/2	Flat	7"	5/8"	3/4"	4	5 1/2"	125	Cast Iron	200 psi @ 72° F	165 psi @ 300° F	FM Approved	4824N14	00000
		3	Flat	7 1/2"	5/8"	3/4"	4	6"	125	Cast Iron	200 psi @ 72° F	165 psi @ 300° F	FM Approved	4824N15	00000
		3 1/2	Flat	8 1/2"	5/8"	3/4"	8	7"	125	Cast Iron	200 psi @ 72° F	165 psi @ 300° F	FM Approved	4824N16	000000
		4	Flat	9"	5/8"	3/4"	8	7 1/2"	125	Cast Iron	200 psi @ 72° F	165 psi @ 300° F	FM Approved	4824N17	000000
		6	Flat	11"	3/4"	7/8"	8	9 1/2"	125	Cast Iron	200 psi @ 72° F	165 psi @ 300° F	FM Approved	4824N18	000000