Restriction Orifice Unions

An alternative design to control flow, with a wide range of options.

Restriction orifice unions feature a single piece metal orifice plate that fits perfectly into the union seat, eliminating the need for a gasket. Orifice unions are commonly used in fire pump systems, since they have the ability to handle higher levels of pressure while maintaning a smaller overall pipe size.

  • Available with pressure ratings of 3000 and 6000 psig.
  • Threaded and socket-weld connections available
  • Unions are available in A105 carbon steel or 316 stainless steel, along with other materials
  • Available in pipe sizes ranging from 1/8” – 2”

Material Options: A105 carbon steel or 316 stainless steel

Industries: Any industry that requires flow measurement, including coolants, gases, steam and water.

The Mac-Weld team is focused on ensuring quality, competitive pricing and meeting delivery expectations. Customer support is seamless and deep. Mac-Weld is a true partner and a most critical and valued supplier.

Tom A., Global Instrumentation company

See factory for details