the arp is a modular style, direct operated precision regulator.? a locking adjustment knob allows?the pressure to be set, and then locked to prevent accidental setting changes. the arp20/30/40...
the arp is a modular style, direct operated precision regulator.? a locking adjustment knob allows?the pressure to be set, and then locked to prevent accidental setting changes. the arp20/30/40...
