Bidirectional flow and pressure controller

This flexible dual-valve design accommodates demanding process control requirements in gas analysis, leak testing and environmental applications.

With a dedicated inlet valve and a dedicated exhaust valve, a single MCD can control upstream and downstream flows, as well as positive pressure or backpressure in both open and closed systems. It’s suitable for processes that require bidirectional flow control and/or pressure control, as well as for pressure control in closed systems, while also monitoring mass flow. User-selectable control modes allow users to switch quickly between mass flow, volumetric flow and absolute pressure measurement and control for maximum flexibility.

Alicat’s patented, internally compensated laminar differential pressure measurement yields linear results over a very wide flow range. The resulting volumetric and mass flow data is fully compensated for changes in pressure and temperature and corrected for the user’s standard temperature and pressure (STP). Available 0.4% accuracy +0.2% full-scale repeatability and less than 100ms control response times ensure top performance of gas flow processes.