P12AX011: for R553V manifold and 3/8", 1/2", 3/4" valves.
P12AX003: for R401, R402, R421, R422 valves, 1" size.
P12AX004: for R356,R357, R358, R304T, R437, R437N, R440N valves.
P12AX006: spare part kit (bonnet, numbered ring, setting key, instruction) for PTG valves.