The first valve used on Inergen cylinders was the CV90 Valve.
This valve uses the 73327 HF Electric Actuator and 70846 Manual Lever Actuator.
The Ansul CV98 Valve was the next evolution of valves for Inergen cylinders.
The 423684 CV98 Actuator was the original created for the CV98 Valve.
For the 423684 CV98 Actuator to work it has to be paired with 423958 Replaceable Metron Protractor, which can only be used once and is non-resettable. Meaning this part has to be replaced every time the cylinders are discharged using this actuator.
PN: 423309, PN: 427207 and PN: 423311 are all Manual Lever Actuators that suit the 423684 CV98 Actuator.
Later on the 428949 Booster Actuator was made which fits straight onto both the CV98 Valve and 73327 HF Electric Actuator. This uses the same 70846 Manual Lever Actuator.