How I replaced a leaking Price Pfister shower valve and not set off the Fire Alarm.

Time Codes
0:00 Intro
1:59 Remove chrome cover
6:13 Trying to I.D. manufacturer
7:34 I.D. Price Pfister warranty
8:32 Safely turn off water without setting off sprinkler alarm
11:00 Removing valve parts
13:00 New two piece valve
14:00 Install parts
15:00 Fixing the metal retainer
16:00 Turning on / testing
17:17 Dissemble bad valve for education value