QL3 High Resolution Valve Series

The QL3 (high resolution, high flow electro-pneumatic pressure regulator) allows high volumes of air to move quickly and precisely at pressures up to 150 psig using proportional solenoid valves with a unique analog PID circuit.

The QL3 improves and builds on the proven technology of the Proportion-Air QB3 series by using a current driven variable orifice solenoid valve and a unique analog PID circuit.

This variable orifice solenoid avoids the pressure “steps” prevalent in most feed and bleed I/Ps.

The PID integrates error out quickly resulting in superior resolution. The combination of a step-less solenoid valve with a high speed analog PID on a high flow volume booster allows a lot of air to be moved in a hurry, but precisely.

The output is proportional to the electrical input or command signal and an analog monitor output signal is standard.