These valves are designed to replace metering and non-metering cartridges within existing Acorn Penal-trol, Metcraft Tempus II and Willoughby Temp 1/Temp 2 valves to pneumatic operation. The Retro-Air Valve Assy. package consists of the Retro-Air servometer cartridge, a push button assy. (or adapter) and polyethylene 1/8" tubing to connect the push button to the Retro-Air servometer cartridge, which replaces existing push buttons and push rod hardware.

These valves are designed to replace metering and non-metering cartridges within existing Acorn Penal-trol, Metcraft Tempus II and Willoughby Temp 1/Temp 2 valves to pneumatic operation. The Retro-Air Valve Assy. package consists of the Retro-Air servometer cartridge, a push button assy. (or adapter) and polyethylene 1/8" tubing to connect the push button to the Retro-Air servometer cartridge, which replaces existing push buttons and push rod hardware.