Orifice Fittings | McMaster-Carr

Filter by

Pipe Size

Body Material

For Use with

Thread Type

Connection Style

Maximum Pressure @ Temperature

Connects to

Gender

Orifice Diameter

Orifice Type

Length

Fitting Connection

Maximum Temperature

Tube OD

Hex Width

Thread Size

Plug Head Style

Minimum Temperature

DFARS Compliance

RoHS Compliance

Outlet Water Flow

Tube ID

Forward

How can we improve?

114 Products

How to 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.

Threaded Flow Control Orifices

Connect these orifices to threaded pipe, or insert them into threaded holes.

Compression Flow-Control Orifices

Compression fittings bite down on the outside of hard metal tubing for a secure connection.

Press-In Flow-Control Orifices

Press these orifices into machined holes in connectors, manifolds, and other custom parts.

Barbed Flow-Control Orifices

Insert the barbed ends of these orifices into rubber and soft plastic tubing, and secure them with a clamp.

Push-to-Connect Flow-Control Orifices

Push tubing into these orifices, and an internal ring holds them in place. They're for use with plastic and soft metal tubing.

Flange-Mount Flow-Control Orifices

Also known as orifice plates, these mount between orifice flange unions.

Pressure-Compensating
Threaded Flow-Control Orifices

When inlet pressure changes, these orifices automatically adjust to deliver a consistent outlet flow. They connect to threaded pipe, or fit into threaded holes

Flow-Control Orifices for Water

Also known as flow restrictors and precision orifice valves, these orifices are used to throttle, vent, bleed, or regulate flow in water systems.

Flow-Control Orifices for Chemicals

Made of PVC, these orifices have excellent resistance to a wide range of corrosive chemicals.

Metal Pipe and Pipe Fittings

Stainless Steel Bleed Rings

Create an access point in systems where corrosion is a concern. Made of stainless steel, these bleed rings resist rusting.

Steel Bleed Rings

Access the inside of lines, so you can vent pressure, drain liquid, or take samples. Made of black-coated steel, these bleed rings should be used in dry environments to prevent rusting.