Pipe Nipples and Pipe For Argon

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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.

Precision Extreme-Pressure Brass Threaded Pipe Fittings

Also known as instrumentation fittings, these have the most precise threads and the tightest tolerances of all the brass pipe fittings we offer. Fittings are brass for good corrosion resistance.

Female x male 90° elbow adapters are also known as street elbows.

Inline tees are also known as branch tees. Right-angle tees are also known as run tees.

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

Straight Connectors, Female

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: See table

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Specifications Met		Each
1/8	4,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	000000
1/4	4,300 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000
3/8	3,500 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000
1/2	2,400 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
3/4	2,300 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
1	2,200 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000

Straight Connectors, Male

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Male
Pipe Size	Lg.	Max. Pressure	Max. Steam Pressure		Each
1/8	3/4"	5,600 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
1/4	1 1/8"	4,100 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
3/8	1 1/8"	4,000 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
1/2	1 1/2"	3,900 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
3/4	1 1/2"	3,800 psi @ 72° F	1,500 psi @ 300° F	00000000	00000

Straight Connectors with Hex, Male

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: See table

NPT Male
Pipe Size	Lg.	Max. Pressure	Max. Steam Pressure	Specifications Met		Each
1/8	1 1/16"	5,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/8	2"	5,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/8	2 1/2"	5,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
1/8	3"	5,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
1/4	1 7/16"	4,100 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/4	2"	4,100 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/4	2 1/2"	4,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
1/4	3"	4,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
1/4	4"	4,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
3/8	1 7/16"	4,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
3/8	2"	3,900 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
1/2	1 7/8"	3,900 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/2	2"	3,900 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/2	2 1/2"	3,900 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	000000
1/2	3"	3,900 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
3/4	1 27/32"	3,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000

Straight Adapters, Female × Male

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: See table

NPT Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure	Specifications Met		Each
1/8	4,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	000000
1/4	4,300 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000
3/8	2,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
1/2	3,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000
3/4	2,200 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
BSPP Female × NPT Male
1/8	3,200 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/4	3,300 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
3/8	2,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/2	2,400 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
3/4	2,300 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	000000
BSPT Female × NPT Male
1/8	3,200 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/4	3,300 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
3/8	2,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/2	2,400 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000

Straight Adapters, Male

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: See table

BSPT Male × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure	Specifications Met		Each
1/8	5,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	000000
1/4	4,100 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
3/8	4,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/2	3,800 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
3/4	3,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000

Straight Reducing Adapters

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: See table

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Specifications Met		Each
NPT Female × NPT Male
1/8	1/16	3,200 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	000000
1/4	1/8	4,300 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000
3/8	1/8	3,500 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
3/8	1/4	3,500 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000
1/2	1/4	2,400 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
1/2	3/8	2,400 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
3/4	1/2	3,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000

Bushing Straight Reducing Adapters

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: See table

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Specifications Met		Each
NPT Male × NPT Female
1/4	1/8	3,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	000000
3/8	1/8	3,200 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
3/8	1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000
1/2	1/8	3,200 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
1/2	1/4	3,900 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000
1/2	3/8	2,800 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000
3/4	1/2	2,800 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000

Straight Reducers, Female

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: See table

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Specifications Met		Each
NPT Female
1/8	1/16	4,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	000000
1/4	1/8	3,200 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
3/8	1/4	2,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
1/2	1/4	3,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	0000000	00000
1/2	3/8	2,400 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
3/4	1/2	2,300 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000

Straight Reducers, Male

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: See table

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Specifications Met		Each
NPT Male
1/8	1/16	5,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	000000
1/4	1/8	4,100 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
3/8	1/8	3,900 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.3	00000000	00000
3/8	1/4	4,000 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/2	1/4	3,900 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
1/2	3/8	3,900 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000
3/4	1/2	3,800 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	00000000	00000

90° Elbow Connectors, Female

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	2,900 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/8	2,700 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/2	2,500 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/4	2,000 psi @ 72° F	1,500 psi @ 300° F	0000000	000000

90° Elbow Connectors, Male

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	5,000 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/4	4,100 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/8	4,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/2	3,100 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/4	3,400 psi @ 72° F	1,500 psi @ 300° F	0000000	000000

90° Elbow Adapters

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	2,900 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/8	2,700 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/2	2,500 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/4	2,000 psi @ 72° F	1,500 psi @ 300° F	0000000	000000

90° Elbow Reducing Adapters

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure		Each
NPT Female × NPT Male
1/8	1/4	2,900 psi @ 72° F	1,500 psi @ 300° F	00000000	000000
1/4	1/2	3,000 psi @ 72° F	1,500 psi @ 300° F	00000000	000000
3/8	1/2	2,700 psi @ 72° F	1,500 psi @ 300° F	00000000	000000

45° Elbow Adapters

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	2,900 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/8	2,700 psi @ 72° F	1,500 psi @ 300° F	0000000	00000

Tee Connectors, Female

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	2,900 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/8	2,700 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/2	2,500 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/4	2,000 psi @ 72° F	1,500 psi @ 300° F	0000000	000000

Tee Connectors, Male

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	5,000 psi @ 72° F	1,500 psi @ 300° F	00000000	000000
1/4	4,100 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
3/8	4,000 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
1/2	3,100 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
3/4	3,400 psi @ 72° F	1,500 psi @ 300° F	00000000	000000

Inline Tee Adapters

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	2,900 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/2	2,500 psi @ 72° F	1,500 psi @ 300° F	0000000	00000

Right-Angle Tee Adapters

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	2,900 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/8	2,700 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/2	2,500 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/4	2,000 psi @ 72° F	1,500 psi @ 300° F	0000000	000000

Cross Connectors

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/4	3,000 psi @ 72° F	1,500 psi @ 300° F	0000000	000000
1/2	2,500 psi @ 72° F	1,500 psi @ 300° F	0000000	000000

Caps

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/8	4,000 psi @ 72° F	1,500 psi @ 300° F	00000000	000000
1/4	4,300 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
1/2	3,600 psi @ 72° F	1,500 psi @ 300° F	00000000	00000

Plugs with Hex Drive

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3

NPT Male
Pipe Size	Drive Size	Max. Pressure	Max. Steam Pressure		Each
1/8	3/16"	5,600 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
1/4	1/4"	4,100 psi @ 72° F	1,500 psi @ 300° F	00000000	0000
3/8	5/16"	4,000 psi @ 72° F	1,500 psi @ 300° F	00000000	00000

Plugs with External Hex Drive

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met:
NPT: ASME B1.20.1, ASME B31.1, ASME B31.3
BSPT: ASME B31.3, DIN 2999, ISO 7.1

NPT Male
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure		Each
1/8	Hollow	5,600 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/4	Hollow	4,100 psi @ 72° F	1,500 psi @ 300° F	0000000	0000
3/8	Hollow	4,000 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
1/2	Hollow	3,900 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
3/4	Hollow	3,800 psi @ 72° F	1,500 psi @ 300° F	0000000	00000
BSPT Male
1/4	Hollow	3,300 psi @ 72° F	1,500 psi @ 300° F	00000000	00000
1	Hollow	2,200 psi @ 72° F	1,500 psi @ 300° F	00000000	00000

Brass and Bronze Unthreaded Pipe Flanges

Bolt these flanges to equipment or to another same-size, flat-surface flange with a gasket (sold separately). They have good corrosion resistance.

Cap flanges are also known as blind flanges.

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

Caps

Front

Flat Surface on Back

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Water
Pressure Class : 150
Specifications Met: ASME B16.24
Pipe Nipples and Pipe: Use Schedule 40 brass

			Bolt Hole
Pipe Size	Flange OD	For Bolt Dia.	Dia.	No. of	Bolt Circle Dia.	Max. Pressure	Material		Each
2	6"	1/2"	3/4"	4	4 3/4"	225 psi @ 72° F	Brass	00000000	0000000
2 1/2	7"	1/2"	3/4"	4	5 1/2"	225 psi @ 72° F	Brass	00000000	000000