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

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

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

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

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