Polybutylene Manifolds | McMaster-Carr

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EAR99

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140 psi @ 72° F

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68 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.

These fittings won’t absorb moisture, so they’re good for water and high-humidity air applications. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. They have good corrosion resistance.

Nickel-plated brass fittings have better corrosion resistance than unfinished brass fittings.

Fittings with thread sealant offer extra protection against leaks.

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

Manifold Adapters (Intermittent Swivel), Male Threaded Pipe × Tube

For Use With: Air, Water
Temperature Range: 32° to 100° F
Tubing: Use with firm (Durometer 90A-95A) nylon plastic or polyurethane rubber

Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.

						Release Ring
Number of Inlets	Pipe Size	Number of Outlets	For Tube OD	Tube Material	Color	Material	Color	Max. Pressure	Features	Choose a Pipe Connection Material		Each
NPT Threads
1	1/8	2	1/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/8	2	5/32"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/8	2	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1	1/8	3	1/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/8	3	5/32"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/8	3	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/8	4	1/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/8	4	5/32"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/8	4	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/8	6	1/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/8	6	5/32"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/8	6	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/4	2	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/4	2	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/4	3	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/4	3	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/4	4	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/4	4	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/4	6	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/4	6	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	2	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	2	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	2	1/2"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	3	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	3	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	3	1/2"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	4	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	4	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	4	1/2"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	6	1/4"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	6	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	6	1/2"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/2	2	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/2	2	1/2"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/2	3	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/2	3	1/2"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/2	4	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/2	4	1/2"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/2	6	3/8"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/2	6	1/2"	Polybutylene Plastic	Gray	Plastic	Orange	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
BSPT Threads
1	1/8	4	4mm	Polybutylene Plastic	Gray	Plastic	Gray	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1	1/8	4	6mm	Polybutylene Plastic	Gray	Plastic	Gray	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1	1/8	4	8mm	Polybutylene Plastic	Gray	Plastic	Gray	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1	1/4	4	6mm	Polybutylene Plastic	Gray	Plastic	Gray	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1	1/4	4	8mm	Polybutylene Plastic	Gray	Plastic	Gray	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/4	4	10mm	Polybutylene Plastic	Gray	Plastic	Gray	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	1/4	4	12mm	Polybutylene Plastic	Gray	Plastic	Gray	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	4	8mm	Polybutylene Plastic	Gray	Plastic	Gray	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	0000
1	3/8	4	10mm	Polybutylene Plastic	Gray	Plastic	Gray	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000
1	3/8	4	12mm	Polybutylene Plastic	Gray	Plastic	Gray	140 psi @ 72° F	Acrylic Thread Sealant	Brass, Nickel-Plated Brass	00000000	00000

Manifold Adapters, Female Threaded Pipe × Tube

For Use With: Air, Lubricated Air, Water
Temperature Range: 32° to 100° F
Tubing: Use with firm (Durometer 90A-95A) nylon plastic or polyurethane rubber

							Release Ring
Number of Inlets	Pipe Size	Number of Outlets	For Tube OD	Pipe Connection Material	Tube Connection Material	Color	Material	Color	Max. Pressure	Mount Type	Mounting Fasteners Included		Each
NPT Threads
2	1/4	6	5/32"	Brass	Polybutylene Plastic	Black	Plastic	Red	140 psi @ 72° F	Screw On	No	000000000	000000
2	1/4	6	1/4"	Brass	Polybutylene Plastic	Black	Plastic	Red	140 psi @ 72° F	Screw On	No	000000000	00000
2	1/4	10	5/32"	Brass	Polybutylene Plastic	Black	Plastic	Red	140 psi @ 72° F	Screw On	No	000000000	00000
2	1/4	10	1/4"	Brass	Polybutylene Plastic	Black	Plastic	Red	140 psi @ 72° F	Screw On	No	000000000	00000
2	3/8	6	5/16"	Brass	Polybutylene Plastic	Black	Plastic	Red	140 psi @ 72° F	Screw On	No	000000000	00000
2	3/8	10	5/16"	Brass	Polybutylene Plastic	Black	Plastic	Red	140 psi @ 72° F	Screw On	No	000000000	00000

Manifold Reducers, Tube

For Use With: Air, Lubricated Air, Water
Temperature Range: 32° to 100° F
Tubing: Use with firm (Durometer 90A-95A) nylon plastic or polyurethane rubber

						Release Ring
Number of Inlets	For Tube OD	Number of Outlets	For Tube OD	Material	Color	Material	Color	Max. Pressure	Mount Type	Mounting Fasteners Included		Each
2	5/16"	6	5/32"	Polybutylene Plastic	Black	Plastic	Orange	140 psi @ 72° F	Screw On	No	000000000	000000
2	5/16"	10	5/32"	Polybutylene Plastic	Black	Plastic	Orange	140 psi @ 72° F	Screw On	No	000000000	00000
2	3/8"	6	1/4"	Polybutylene Plastic	Black	Plastic	Orange	140 psi @ 72° F	Screw On	No	000000000	00000
2	3/8"	10	1/4"	Polybutylene Plastic	Black	Plastic	Orange	140 psi @ 72° F	Screw On	No	000000000	00000
2	1/2"	6	5/16"	Polybutylene Plastic	Black	Plastic	Orange	140 psi @ 72° F	Screw On	No	000000000	00000
2	1/2"	10	5/16"	Polybutylene Plastic	Black	Plastic	Orange	140 psi @ 72° F	Screw On	No	000000000	00000
2	10mm	6	6mm	Polybutylene Plastic	Black	Plastic	Green	140 psi @ 72° F	Screw On	No	00000000	00000
2	10mm	10	6mm	Polybutylene Plastic	Black	Plastic	Green	140 psi @ 72° F	Screw On	No	00000000	00000
2	12mm	6	8mm	Polybutylene Plastic	Black	Plastic	Green	140 psi @ 72° F	Screw On	No	00000000	00000
2	12mm	10	8mm	Polybutylene Plastic	Black	Plastic	Green	140 psi @ 72° F	Screw On	No	00000000	00000

Weld-Spatter-Resistant Push-to-Connect Tube Fittings for Air and Water

Temperature Range: 32° to 100° F
Tubing: Use with firm or hard (Durometer 90A-50D) nylon plastic or polyurethane rubber

Made of flame-resistant material, these fittings are good for welding and other applications where sparks occur. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. They have good corrosion resistance.

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

Manifold Adapters, Female Threaded Pipe × Tube

Use plugs to close off unused manifold holes.

BSPT Threads
Number of Inlets	Pipe Size	Number of Outlets	For Tube OD, mm	Pipe Connection Material	Tube Connection Material	Color	Release Ring Color	Max. Pressure	Mount Type	Mounting Fasteners Included		Each
2	1/4	6	6	Brass	Polybutylene Plastic	Black	Green	140 psi @ 72° F	Screw On	No	0000000	000000
2	3/8	6	8	Brass	Polybutylene Plastic	Black	Green	140 psi @ 72° F	Screw On	No	0000000	00000

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How to Identify and Measure Fittings

Moisture-Resistant Push-to-Connect Tube Fittings for Air and Water

Weld-Spatter-Resistant Push-to-Connect Tube Fittings for Air and Water