ASME B16.4 Pipe Fittings

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Maximum Pressure @ Temperature

125 psi @ 72° F

175 psi @ 72° F

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EAR99

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85 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.

Low-Pressure Iron and Steel Threaded Pipe Fittings

Use these fittings for low-pressure applications in noncorrosive environments.

Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.

Locknuts

For Use With: Air, Natural Gas, Oil, Steam, Water
Pressure Class:
NPT: 125
NPSL: 150
Specifications Met:
NPT: ASME B1.20.1, ASME B16.4
NPSL: ASME B16.14
BSPP: DIN 431
Pipe Nipples and Pipe:
NPT, NPSL: Use Schedule 40 steel

NPT Female
Pipe Size	Material		Each
3	Iron	44605K488	000000

FM-Approved Low-Pressure Cast Iron 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.

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.

Inline tees are also known as branch tees.

Straight Reducers

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: 125
Specifications Met: FM Approved, UL Listed, ASTM A126, ASME B1.20.1, ASME B16.4
Pipe Nipples and Pipe: Use Schedule 40 steel

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Female
3/4	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K53	000000
1	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K11	00000
1	3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K12	00000
1 1/4	3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K54	00000
1 1/4	1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K13	00000
1 1/2	1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K55	00000
1 1/2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K14	00000
2	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K58	00000
2	3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K57	00000
2	1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K15	00000
2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K56	00000
2	1 1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K16	00000
2 1/2	2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K17	00000
3	1 1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K59	00000
3	2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K18	000000

Offset Straight Reducers

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: 125
Specifications Met: FM Approved, UL Listed, ASTM A126, ASME B1.20.1, ASME B16.4
Pipe Nipples and Pipe: Use Schedule 40 steel

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Female
3/4	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K62	000000
1	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K66	00000
1	3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K64	00000
1 1/4	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K73	00000
1 1/4	3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K71	00000
1 1/4	1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K67	00000
1 1/2	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K81	00000
1 1/2	3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K78	00000
1 1/2	1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K77	00000
1 1/2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K75	00000
2	1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K85	000000
2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K84	000000
2	1 1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K82	000000

90° Elbow Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: 125
Specifications Met: FM Approved, UL Listed, ASTM A126, ASME B1.20.1, ASME B16.4
Pipe Nipples and Pipe: Use Schedule 40 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K21	00000
3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K22	0000
1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K23	0000
1 1/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K24	00000
1 1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K25	00000
2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K26	00000
2 1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K27	00000
3	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K28	000000
4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K49	000000

45° Elbow Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: 125
Specifications Met: FM Approved, UL Listed, ASTM A126, ASME B1.20.1, ASME B16.4
Pipe Nipples and Pipe: Use Schedule 40 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K31	000000
3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K32	00000
1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K33	00000
1 1/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K34	00000
1 1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K35	00000
2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K36	00000
2 1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K37	00000
3	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K38	000000
4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K51	000000

Tee Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: 125
Specifications Met: FM Approved, UL Listed, ASTM A126, ASME B1.20.1, ASME B16.4
Pipe Nipples and Pipe: Use Schedule 40 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K41	000000
3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K42	00000
1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K43	00000
1 1/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K44	00000
1 1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K45	00000
2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K46	00000
2 1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K47	00000
3	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K48	000000
4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K52	000000

Inline Tee Reducers

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: 125
Specifications Met: FM Approved, UL Listed, ASTM A126, ASME B1.20.1, ASME B16.4
Pipe Nipples and Pipe: Use Schedule 40 steel

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Female
3/4	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K61	000000
1	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K65	00000
1	3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K63	00000
1 1/4	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K68	00000
1 1/4	3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K72	00000
1 1/4	1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K69	00000
1 1/2	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K83	00000
1 1/2	3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K79	00000
1 1/2	1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K76	00000
1 1/2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K74	00000
2	1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K96	00000
2	3/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K94	00000
2	1	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K92	00000
2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K89	00000
2	1 1/2	125 psi @ 72° F	125 psi @ 350° F	Iron	68115K86	00000

Plugs with Square Drive

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: 125
Specifications Met: FM Approved, UL Listed, ASTM A126, ASME B1.20.1, ASME B16.4
Pipe Nipples and Pipe: Use Schedule 40 steel

NPT Male
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure	Material		Each
1	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K105	000000
1 1/4	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K106	00000
1 1/2	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K107	00000
2	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K108	00000
2 1/2	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K109	00000
3	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K111	00000
4	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K112	000000

Plugs with External Square Drive

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: 125
Specifications Met: FM Approved, UL Listed, ASTM A126, ASME B1.20.1, ASME B16.4
Pipe Nipples and Pipe: Use Schedule 40 steel

NPT Male
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure	Material		Each
1	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K113	00000
1 1/4	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K114	0000
1 1/2	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K115	0000
2	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K116	00000
2 1/2	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K117	00000
3	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K118	00000
4	Solid	175 psi @ 72° F	125 psi @ 350° F	Iron	68115K119	00000