Copper Pipe Flanges | McMaster-Carr

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	Material Material

	For Pipe Material For Pipe Material

	Type Type


Flange	Adapter

Connector	Union

	Copper Tube Size Copper Tube Size

1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4

	Connection Style Connection Style

	Pipe Size Pipe Size

1/4
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4

	System of Measurement System of Measurement

Inch

	For Tube OD For Tube OD

	Shape Shape


Straight	90° Elbow

Tee	45° Elbow

	Connection Type Connection Type


Pipe	Tube

	For Use With For Use With

	Flange OD Flange OD

	Socket Connect Type Socket Connect Type


Cement	Solder

Press

	Number of Bolt Holes Number of Bolt Holes

	Gender Gender

Female

Male

	For Pipe Size For Pipe Size

1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8
10

	Bolt Circle Diameter Bolt Circle Diameter

	Maximum Temperature Maximum Temperature

	Maximum Pressure Maximum Pressure

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

DFARS Specialty Metals
COTS-Exempt

	For Copper Tube Type For Copper Tube Type

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

RoHS Compliant

RoHS Compliant with
Exemptions

	For Tube Material For Tube Material

Copper

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

REACH Compliant

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119 Products

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 Pipe Fittings
for Joining Dissimilar Metals

Use these unions to connect different metals in a piping or plumbing system. They have a gasket with a plastic sleeve that inhibits destructive corrosion.

Copper-Nickel Butt-Weld Pipe Fittings

Also known as Pressure Class 200 fittings.

Copper-Nickel Threaded Pipe Fittings

These fittings have excellent resistance to stress cracking and have better corrosion resistance than most stainless steel alloys.

Thick-Wall Plastic Pipe Fittings for Water

Connect these fittings to thick-wall plastic pipe—they have thicker, stronger walls than standard-wall fittings, so they can handle heavy duty industrial plumbing and water supply applications, such as water processing, waste water treatment, and irrigation. They can withstand pressures up to 900 psi.

Low-Pressure Clamp-On Connectors for Air

These connectors are for use in low-pressure air and vacuum conveying systems, as well as in gravity-flow systems.

Low-Pressure Quick-Lock Clamp-On Connectors for Air

A turn of the T-handle will tighten and loosen these connectors, so you can quickly disassemble and reassemble your lines without tools.

Low-Pressure Clamp-On Connectors for Water

Also known as no-hub couplings, these have a one-piece sleeve with a stop in the center, so you know your pipe is always aligned correctly.

Solder-Connect Fittings for Copper Tubing

Solder these fittings to tubing for a permanent, leak-tight connection. They are also known as sweat fittings.

Press-Connect Fittings for Copper Tubing

Crimp these fittings to copper tubing with a crimping tool for a leak-tight connection that doesn’t require heat or soldering. They are comparable to Viega ProPress fittings.