If you're wanting to have both a boom pole and hose reel with your wall-mounted setup, here's how you can include a valve system so that you can direct water to whichever setup you want. This is not a solution we have in the Obsessed Garage store, but we can order these parts for you by request. With these parts you would have to find a way to fashion them onto your wall.
Wall mounted T and Valve setup:
48805K127 - Tee Connector, Male - X1 - $89.60
4715K43 - On/Off Inline Hydraulic Valve - X2 - $71.73 ea
4443K633 - 90 Degree Elbow Adapter - X1 - $50.70
4567K11 - Polished Chrome Plated Wall Cover - X1 - $4.72
Your flow path will be this:
Pressure washer to reel (LOWER PATH): M22 outlet > BLUE JUMPER HOSE 3' 14mm QDs > 3/8" FEMALE STAINLESS QUICK DISCONNECT COUPLER > 3/8" FEMALE STAINLESS PLUG > Tee Connector, Male > LOWER On/Off Inline Hydraulic Valve > 3/8" MALE STAINLESS PLUG > 3/8" FEMALE STAINLESS QUICK DISCONNECT COUPLER > BLUE JUMPER HOSE 3' > COX HOSE REEL INLET
Pressure washer to boom (UPPER PATH): Same as above up to the Tee Connector, Male, then: UPPER On/Off Inline Hydraulic Valve > 90 Degree Elbow Adapter into wall to hide hose > 3/8" MALE STAINLESS PLUG > 3/8" FEMALE STAINLESS QUICK DISCONNECT COUPLER > 25' KOBRAJET HOSE NO QDs to the boom pole