Iron (Class 300) Medium-Pressure Threaded Pipe Fittings

	Pipe Size Pipe Size

	Thread Type Thread Type

NPT

NPTF

	Shape Shape


Straight	Tee

90° Elbow	Cap/Plug

Cross	45° Elbow

	Type Type


Connector	Reducer

Union	Plug

Adapter	Cap

Flange

	Material Material

Iron

Steel

	Finish Finish

Black Coated

Galvanized

	Connection Style Connection Style

Threaded

Flanged

	For Use With For Use With

	Maximum Pressure Maximum Pressure

	Gender Gender

Female

Male

	Maximum Steam Pressure Maximum Steam Pressure

300 psi @ 550° F

230 psi @ 550° F

Not Rated

	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

	Drive Style Drive Style


External Square	Hex

	Length Length

	Body Shape Body Shape


Hex	Square

	Plug Construction Plug Construction

Solid

Hollow

	Flange OD Flange OD

	Hex Width Hex Width

	For Bolt Diameter For Bolt Diameter

5/8"

3/4"

7/8"

	Number of Bolt Holes Number of Bolt Holes

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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.

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.

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

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

Inline tees are also known as branch tees.

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

Straight Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2 1/2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

Union Straight Connectors

Exploded View

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.39, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/8	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	000000
1/4	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000
3/8	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000
1/2	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000
3/4	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000
1	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000
1 1/4	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000
1 1/2	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000
2	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000
2 1/2	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	000000
3	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	000000

Straight Reducers

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Female
3/8	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
1/2	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1/2	3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2 1/2	1 1/2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
2 1/2	2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3	1 1/2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3	2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3	2 1/2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

90° Elbow Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2 1/2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

Union 90° Elbow Connectors

Exploded View

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.39, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
3/8	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	000000
1/2	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000
3/4	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000
1	600 psi @ 72° F	230 psi @ 550° F	Iron	00000000	00000

90° Elbow Adapters

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

90° Elbow Reducers

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Female
3/8	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
1/2	3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
2	1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

45° Elbow Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2 1/2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

45° Elbow Adapters

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

Tee Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2 1/2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

Inline Tee Reducers

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Female
3/8	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
1/2	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1/2	3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1/2	3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
1 1/2	1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
2	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
2	1	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
2	1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
2	1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
2 1/2	1 1/2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

Cross Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

Caps

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
2 1/2	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	00000
3	1,000 psi @ 72° F	300 psi @ 550° F	Iron	00000000	000000

Plugs with Hex Drive

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: See Table
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Male
Pipe Size	Drive Size	Max. Pressure	Max. Steam Pressure	Material	Specifications Met		Each
1/4	1/4"	2,000 psi @ 72° F	300 psi @ 550° F	Steel	ASME B1.20.1, ASME B16.14, ASME B16.3, ASTM A197, UL Listed	0000000	00000
3/8	5/16"	2,000 psi @ 72° F	300 psi @ 550° F	Steel	ASME B1.20.1, ASME B16.14, ASME B16.3, ASTM A197, UL Listed	0000000	000
1/2	3/8"	2,000 psi @ 72° F	300 psi @ 550° F	Steel	ASME B1.20.1, ASME B16.14, ASME B16.3, ASTM A197, UL Listed	0000000	0000
3/4	9/16"	2,000 psi @ 72° F	300 psi @ 550° F	Steel	ASME B1.20.1, ASME B16.14, ASME B16.3, ASTM A197, UL Listed	0000000	0000
1	5/8"	2,000 psi @ 72° F	300 psi @ 550° F	Steel	ASME B1.20.1, ASME B16.14, ASME B16.3, ASTM A197, UL Listed	0000000	0000
1 1/2	1"	1,500 psi @ 72° F	300 psi @ 550° F	Steel	ASME B1.20.1, UL Listed	00000000	00000
2	1"	1,500 psi @ 72° F	300 psi @ 550° F	Steel	ASME B1.20.1, UL Listed	00000000	00000
NPTF Male
1 1/4	3/4"	300 psi @ 72° F	300 psi @ 550° F	Steel	ASME B16.14	00000000	0000

Plugs with External Square Drive

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class : 300
Specifications Met: See Table
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 or 600 steel

NPT Male
Pipe Size	Plug Construction	Max. Pressure	Max. Steam Pressure	Material	Specifications Met		Each
1/8	Solid	175 psi @ 72° F	300 psi @ 550° F	Steel	ASME B1.20.1, ASME B16.14	0000000	00000
1/4	Solid	175 psi @ 72° F	300 psi @ 550° F	Steel	ASME B1.20.1, ASME B16.14	0000000	000
3/8	Solid	175 psi @ 72° F	300 psi @ 550° F	Steel	ASME B1.20.1, ASME B16.14	0000000	0000
1/2	Solid	175 psi @ 72° F	300 psi @ 550° F	Iron	ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed	00000000	0000
3/4	Solid	175 psi @ 72° F	300 psi @ 550° F	Iron	ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed	00000000	0000
1	Solid	175 psi @ 72° F	300 psi @ 550° F	Iron	ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed	00000000	0000
1 1/4	Solid	175 psi @ 72° F	300 psi @ 550° F	Iron	ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed	00000000	00000
1 1/2	Solid	175 psi @ 72° F	300 psi @ 550° F	Iron	ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed	00000000	00000
2	Solid	175 psi @ 72° F	300 psi @ 550° F	Iron	ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed	00000000	00000
2 1/2	Solid	175 psi @ 72° F	300 psi @ 550° F	Iron	ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed	00000000	00000
3 1/2	Hollow	175 psi @ 72° F	300 psi @ 550° F	Iron	ASME B1.20.1, ASME B16.14, ASTM A126, UL Listed	00000000	00000

Medium-Pressure Galvanized Steel Threaded Pipe Flanges

Front

Raised Surface on Back

For Use With: Air, Natural Gas, Steam, Water
Pressure Class : 300
Specifications Met: ASTM A123, ASTM A105, ASME B16.5
Pipe Nipples and Pipe: Use Schedule 80 steel
Fittings: Use Class 300 iron or steel

A galvanized finish gives these flanges fair corrosion resistance. Also known as Pressure Class 300 flanges, they can withstand medium-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line.

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

			Bolt Hole
Pipe Size	Flange OD	For Bolt Dia.	Dia.	No. of	Bolt Circle Dia.	Max. Pressure		Each
NPT
1/2	3 3/4"	5/8"	0.62"	4	2 5/8"	600 psi @ 72° F	0000000	0000000
3/4	4 5/8"	3/4"	3/4"	4	3 1/4"	600 psi @ 72° F	0000000	000000
1	4 7/8"	3/4"	3/4"	4	3 1/2"	600 psi @ 72° F	0000000	00000
1 1/4	5 1/4"	3/4"	3/4"	4	3 7/8"	600 psi @ 72° F	0000000	000000
1 1/2	6 1/8"	7/8"	0.88"	4	4 1/2"	600 psi @ 72° F	0000000	000000
2	6 1/2"	3/4"	3/4"	8	5"	600 psi @ 72° F	0000000	000000
3	8 1/4"	7/8"	0.88"	8	6 5/8"	600 psi @ 72° F	0000000	000000
4	10"	7/8"	0.88"	8	7 7/8"	600 psi @ 72° F	0000000	000000

Medium-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

A galvanized finish gives these fittings fair corrosion resistance. They have the strength to handle medium-pressure applications.

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

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

Inline tees are also known as branch tees.

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

Straight Connectors

For Use With: Air, Natural Gas, Steam, Water
Pressure Class : 300
Specifications Met: ASTM A153, ASTM A197, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000

Union Straight Connectors

Exploded View

For Use With: Air, Natural Gas, Steam, Water
Pressure Class : 300
Specifications Met: FM Approved, UL Listed, ASTM A197, ASTM A153, ASME B1.20.1, ASME B16.39
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/8	600 psi @ 72° F	230 psi @ 550° F	Galvanized Iron	0000000	000000
1/4	600 psi @ 72° F	230 psi @ 550° F	Galvanized Iron	0000000	00000
3/8	600 psi @ 72° F	230 psi @ 550° F	Galvanized Iron	0000000	00000
1/2	600 psi @ 72° F	230 psi @ 550° F	Galvanized Iron	0000000	00000
3/4	600 psi @ 72° F	230 psi @ 550° F	Galvanized Iron	0000000	00000
1	600 psi @ 72° F	230 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/4	600 psi @ 72° F	230 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/2	600 psi @ 72° F	230 psi @ 550° F	Galvanized Iron	0000000	00000
2	600 psi @ 72° F	230 psi @ 550° F	Galvanized Iron	000000	000000

Straight Reducers

For Use With: Air, Natural Gas, Steam, Water
Pressure Class : 300
Specifications Met: ASTM A153, ASTM A197, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 steel

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Female
3/8	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
1/2	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1/2	3/8	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	000000	00000
3/4	3/8	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
3/4	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	1/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	3/8	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	3/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/4	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	00000000	00000
1 1/4	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/4	1	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/2	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	00000000	00000
1 1/2	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	00000000	00000
1 1/2	1	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	00000000	00000
1 1/2	1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	00000000	00000
2	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	00000000	000000
2	1	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	00000000	000000
2	1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	00000000	000000
2	1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	00000000	000000

90° Elbow Connectors

For Use With: Air, Natural Gas, Steam, Water
Pressure Class : 300
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000

90° Elbow Adapters

For Use With: Air, Natural Gas, Steam, Water
Pressure Class : 300
Specifications Met: ASTM A153, ASTM A197, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 steel

NPT Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000

90° Elbow Reducers

For Use With: Air, Natural Gas, Steam, Water
Pressure Class : 300
Specifications Met: ASTM A153, ASTM A197, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 steel

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Female
3/4	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
1	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
2	1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000

45° Elbow Connectors

Pressure Class : 300
Specifications Met: ASTM A153, ASTM A197, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000

Tee Connectors

For Use With: Air, Natural Gas, Steam, Water
Pressure Class : 300
Specifications Met: ASTM A153, ASTM A197, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000

Inline Tee Reducers

For Use With: Air, Natural Gas, Steam, Water
Pressure Class : 300
Specifications Met: ASTM A153, ASTM A197, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 steel

Pipe Size
(A)	(B)	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Female
3/4	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
1	1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	3/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/4	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
1 1/4	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
1 1/4	1	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
1 1/2	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	000000	000000
1 1/2	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
1 1/2	1	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
1 1/2	1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
2	1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
2	3/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
2	1	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
2	1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
2	1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000

Caps

For Use With: Air, Natural Gas, Steam, Water
Pressure Class : 300
Specifications Met: ASTM A153, ASTM A197, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 80 steel
Flanges: Use Class 300 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	000000
3/8	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	000000	00000
1/2	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
3/4	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1	2,000 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/4	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
1 1/2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000
2	1,500 psi @ 72° F	300 psi @ 550° F	Galvanized Iron	0000000	00000