Brass Pipe Unions | McMaster-Carr

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	Material Material

Iron

Plastic

Brass

Bronze

	For Pipe Material For Pipe Material

	Type Type


Union	Connector

Adapter	Rotating Joint

	Pipe Size Pipe Size

	Thread Type Thread Type

	For Use With For Use With

	Connection Style Connection Style

Threaded

Socket Connect

	Shape Shape


Straight	90° Elbow

	Maximum Pressure Maximum Pressure

	Gender Gender

Female

Male

	Connection Type Connection Type


Pipe	Tube

	For Pipe Schedule For Pipe Schedule


40	80

	System of Measurement System of Measurement

Inch

	Length Length

	Body Shape Body Shape

	Hex

	Class Class

125

250

	Hex Width Hex Width

	Specifications Met Specifications Met

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

DFARS Specialty Metals
COTS-Exempt

	Schedule Schedule


40	80

	Socket Connect Type Socket Connect Type


Cement	Solder

Press	Braze

	Copper Tube Size Copper Tube Size

	Maximum Steam Pressure Maximum Steam Pressure

15 psi @ 250° F

125 psi @ 400° F

200 psi @ 425° F

	Fabrication Fabrication

Machined

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131 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.

Low-Pressure Brass and Bronze Threaded Pipe Fittings

Use these fittings in low-pressure flow applications. They have good corrosion resistance.

Low-Pressure Plated Brass Threaded Pipe Fittings

Used in low-pressure pipe lines, these brass fittings have a plating that makes them shiny and improves corrosion resistance.

High-Pressure Brass Threaded Pipe Fittings

These brass fittings have the strength to handle high-pressure applications.

High-Pressure Brass Threaded
Pipe Fittings for Drinking Water

Use these heavy-duty brass fittings for high-pressure drinking water applications.

Medium-Pressure Brass and
Bronze Threaded Pipe Fittings

Choose these fittings when you need better strength than our low-pressure brass and bronze pipe fittings.

Bronze Unthreaded Pipe Fittings

Also known as Silbraze fittings.

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.

Standard-Wall Plastic Pipe Fittings for Water

Connect these fittings to Schedule 40 plastic pipe—they are the industry standard for residential and commercial low-pressure plumbing and water supply applications. They are plastic for good corrosion resistance.

Brass One-Way-Flow Rotating Joints

Joints are for one-way flow and are brass for good corrosion resistance.

Brass Two-Way-Flow Rotating Joints

Joints are for two-way flow and are brass for good corrosion resistance.

Tube Fittings for Copper and Brass Tubing

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.