Adams Regulator - nitrous Oxide
Date of manufacture:
This early Adams valve has a nozzle outlet for connection to a rubber tube and is equipped with an On/Off valve. There is an overpressure relief valve to the left of the housing and a knurled adjustment at the top of the device allows for outlet pressure adjustment once the hex lock nut has been loosened. The outlet pressure would vave been of the order of 5 psi to prevent the tubing from blowing off.
- as fitted to early Boyle machines (circa 1920s)