Black Iron (Class 125) Low-Pressure Threaded Pipe Fittings

	Pipe Size Pipe Size

1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6

	Type Type


Bushing	Reducing Adapter

Connector	Reducer

Plug

	Shape Shape


Straight	Tee

45° Elbow	90° Elbow

Cap/Plug

	For Use With For Use With

	Gender Gender

Female

Male

	Maximum Pressure Maximum Pressure

125 psi @ 72° F

150 psi @ 72° F

175 psi @ 72° F

	Body Shape Body Shape


Hex	Square

	Specifications Met Specifications Met

ASME

ASTM

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

	Length Length

	Hex Width Hex Width

	Drive Style Drive Style


External Square	Square

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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.

FM-Approved Low-Pressure Cast Iron Threaded Pipe Fittings

Suitable for use in fire-protection applications, these pipe fittings 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.

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

Bushing Straight Reducing Adapters

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 B16.14
Pipe Nipples and Pipe: Use Schedule 40 steel

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Male × NPT Female
1 1/4	3/8	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/4	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	0000
1 1/4	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	0000
1 1/2	3/8	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/2	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/2	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
1 1/2	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	0000
2	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
2	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
2	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
2 1/2	1 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
3	2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
3	2 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
4	3	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000

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	Black-Coated Iron	00000000	000000
1	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/4	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/4	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	1 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2 1/2	2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
3	1 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	000000
3	2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	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	Black-Coated Iron	00000000	000000
1	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/4	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/4	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/4	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	000000
2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	000000
2	1 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	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	Black-Coated Iron	00000000	00000
3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	0000
1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	0000
1 1/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
3	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	000000
4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	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	Black-Coated Iron	00000000	000000
3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
3	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	000000
4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	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	Black-Coated Iron	00000000	000000
3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
3	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	000000
4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	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	Black-Coated Iron	00000000	000000
1	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/4	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/4	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/4	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
1 1/2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	3/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	1	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	1 1/4	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000
2	1 1/2	125 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	00000000	00000

Low-Pressure Iron and Steel Threaded Pipe Fittings

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

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

Bushing Straight Reducing Adapters

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: See table
Specifications Met: ASME B16.14
Pipe Nipples and Pipe: Use Schedule 40 steel

Pipe Size
(A)	(B)	Pressure Class	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Male × NPT Female
3	2	125	150 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000
4	3	125	150 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000

Bushing Straight Reducing Adapters with Hex Body

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class: See table
Pipe Nipples and Pipe: Use Schedule 40 steel

Pipe Size
(A)	(B)	Pressure Class	Max. Pressure	Max. Steam Pressure	Material	Specifications Met		Each
NPT Male × NPT Female
1 1/2	1/4	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	000000
1 1/2	3/8	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
1 1/2	1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
2	1/4	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
2	3/8	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
2	1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
2	3/4	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
2 1/2	1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
2 1/2	3/4	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
2 1/2	1	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
2 1/2	1 1/4	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
2 1/2	1 1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3	1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3	3/4	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3	1	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3	1 1/4	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3	1 1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3	2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3	2 1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3 1/2	1	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3 1/2	1 1/4	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3 1/2	1 1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3 1/2	2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3 1/2	2 1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
3 1/2	3	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
4	1	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
4	1 1/4	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
4	1 1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
4	2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
4	2 1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
4	3	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
6	2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
6	2 1/2	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	000000
6	3	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
6	4	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000
6	5	125	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	ASME B16.14	000000000	00000

Plugs with Square Drive

For Use With: Air, Steam, Oil, Water, Natural Gas
Presure Class:
Steel: 150
Iron: 125
Pipe Nipples and Pipe: Use Schedule 40 steel

NPT Male
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure	Material		Each
2 1/2	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000
3	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
3 1/2	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
4	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000

Plugs with External Square Drive

For Use With:
NPT and BSPT: Air, Natural Gas, Oil, Steam, Water
NPTF: Air, Natural Gas, Steam, Water
Pressure Class:
NPT Iron: 125
BSPT Iron: 150
Specifications Met:
See table
Pipe Nipples and Pipe:
NPT and BPST: Use Schedule 40 steel

NPT Male
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure	Material		Each
2 1/2	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	000000
3	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
3 1/2	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000
4	Hollow	175 psi @ 72° F	125 psi @ 350° F	Black-Coated Iron	000000000	00000