It's actually not mine I repurposed it from Maurice's paint kit and added the air fittings. Air pressure regulators are very common.
For example (not endorsing this, just did a quick search): https://www.amazon.com/Compressor-PressureBostitch-BTFP72326-Regulator-140PSI-Control4-Inch-Thread/dp/B01KXIXICU0HXD2V36/
Original Message
Author: Boxsterra Date: June 16, 2019 06:08PM 20 psi
It's actually not mine I repurposed it from Maurice's paint kit and added the air fittings. Air pressure regulators are very common.
For example (not endorsing this, just did a quick search): https://www.amazon.com/Compressor-Pressure-Regulator-140PSI-Control/dp/B01KXIXICU