Retaining Ring, Air Cap 0277507 Wagner 9170-9210; Amspray 1900-2100; SprayTech 1720 / 1920 / 2120 / PF30 / PF33 This "0278240 Green diaphragm" replaces

This "0278240 Green diaphragm" replaces the older "0288771 White diaphragm" and "0270201 Red diaphragm"

Professional ControlMax Spray Gun

Cleaning the Inlet :If needed

EP2005 models that use a Live Swiveling suction set

Retaining Ring, Air Cap 0277507 Wagner 9170-9210; Amspray 1900-2100; SprayTech 1720 / 1920 / 2120 / PF30 / PF33 This "0278240 Green diaphragm" replacesPart Number: 0277507 (Replaces obsolete part # 0275582) Sometimes this part gets tightened too much so that the air cap can't move. The air cap is designed to "float" to change spray patterns, so it should not be screwed on as tight as possible. Listed as item number 32 on Titan Maxum II Gun Part Breakdown.