The PCT53 Pressure Control is a highly visible and easy to understand pressure control process, which uses pumped water to generate air pressure in a closed tank. It comprises two clear acrylic vessels: an upper process vessel mounted above an open sump tank.
The process vessel is sealed and so the air inside the tank is pressurised as water from the sump tank is pumped into it. Water drains from the process tank back into the lower sump tank via two outlets: one continuous and one incorporating a remotely controlled solenoid valve. Both outlets incorporate interchangeable orifices plus a hand operated variable valve, allowing the flow of water to be varied continuously to suit particular demonstrations.