The BP-3 Series is designed for either liquid or gas service
in instrumentation systems. Similar in design to pressure
reducing control regulators which regulate outlet pressures,
back pressure regulators control the inlet pressure. The
many features of this regulator, particularly its precise
throttling action, make it ideal for this type of application.
In low fl ow or closed systems, over-pressures often are
released by pressure relief valves. This type of relief is
on-off with no throttling control. In contrast to relief valves,
the back pressure control regulator with its throttling action
substantially improves system pressure regulation.