All our restriction orifice union cups can be bored to specifications based on the customers application.
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 maintaining a smaller overall pipe size. This also makes them perfect for small bore applications.
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 restriction, including coolants, gases, steam and water.
Mac-Weld Orifice Plates and More Catalogue
Available in a variety of styles, sizes and materials, see our catalogue for more details.
Our machining process includes ISO and LEAN principals, our CNC machines are always updated for maximum efficiency
