DSP Piston Pump Repair Kit: 0512223 ,0512229, 0512178, 0516700 ProCoat The manufacture notes the gun

The manufacture notes the gun "comes with a stainless stell needle and fluid nozzle which allows use with water based paints

Cabinet shops sometimes use airless

Steady flow of paint from the airless allows continuous rolling with out stopping to dip roller or fill paint tray

and the Wagner Conversion Gun

DSP Piston Pump Repair Kit: 0512223 ,0512229, 0512178, 0516700 ProCoat The manufacture notes the gunFits the Following Airless Sprayers Wagner SprayTech Apex Titan Amspray Pro Force Krebs 9170 1720 XT 330 1700 K3017 9190 1920 XT 420 1900 PF33 K4019 9210 2120 2100 Includes: Top Nut Top seal Piston assembly Bottom Seal and O Ring O Rings Basically comes with all you should need to rebuild one of these pumps. Kit does include instructions. Not a hard part to put in, but we do recommend to sit down and read the instructions first. And PLEASE make sure