A QB1 mounted on a liquid regulator is controlling the pressure of the die lube being sprayed in a die cast mold. This QB2 requires a separate air source to provide signal pressure to the dome of the liquid regulator. The Burling Valve BD series is an an excellent liquid regulator for die lube spray applications.
A QB2 mounted on a PSR is controlling the air pressure for the atomization portion of the application. The air is atomized with the die lube and sprayed onto the mold to provide lubrication and various coating materials.
If you have an aging automated spraying system or one that does not meet your standards, Proportion-Air can help retro-fit the pneumatic controls on your current system to our extremely repeatable and durable electro-pneumatic control devices.