Mindray A3 - Remove the APL Valve Assembly

Disassemble the Breathing System Repair and Disassembly
6 - 66 046-001141-00 A5/A3™ Service Manual
FIGURE 6-128
5. Remove the compression spring and replace the two seals (P/N 0030-10-13077)
FIGURE 6-129
6.3.17 Remove the APL Valve Assembly
Turn the locking ring counterclockwise and pull the APL valve assembly straight up to remove it.