2-68  Change 12 TM 10-4610-232-12 Table 2-15.  Closed Vent, Drain, and Sample Valves (Item numbers are keyed to Figure 2-35) Item Description Valve No. 1 Raw Water Pump Drain V1 2 Clean/Flush Tank Drain V4 3 Media Filter Vent V19 4 Media Filter Upper Drain V25 5 Media Filter Lower Drain V24 6 Media Filter Outlet Sample V33 7 Media Filter Outlet Piping Drain V73 8 Deleted 9 Cart. Filter Outlet Piping Drain V40 10 Booster Pump Drain V9 11 Cartridge Filter Drain V39 12 Cartridge Filter Vent V38 13 Raw Water Sample/Vent V12 14 Distribution Pump Drain V66 15 Cartridge Filter Outlet Sample V41 Item Description Valve No 17 Product Drain V48 18 Product Water Sample V54-V59 19 High Pres. Pump Suction Vent V76 20 High Pressure Pump Discharge Vent 21 Product Vent V100 22 Pulse Dampener Drain V74 23 Air Compressor Bleed Valve V70 24 Air Blanket Level Indicator Drain Valve 25 Chemical Drain Valves V26, V36-V37 26 High Pressure Drain Valves V7 27 Pressure Gage Drain Valves -- Figure 2-35.  Vent, Drain, and Sample Valves (Sheet 1 of 2)