TM 55-1930-209-14&P-8 Table 3-1.  Fuel Oil System Valves (continued) Figure 34 Type Callout Location Valve Name and Function 3/8-in FO16 ROWPU space below SERVICE GENERATOR 1 SUPPLY: globe valve day tank Allows fuel to flow to valve FO23 (SSG1) 3/8-in FO17 ROWPU space below SERVICE GENERATOR 2 SUPPLY: globe valve day tank Allows fuel to flow to valve FO24 (SSG2) 3/8-in FO18 ROWPU space below 20 KW GENERATOR SUPPLY: globe valve day tank Allows fuel to flow to valve FO25 (SAG) 1-in FO19 ROWPU space on left GENERATOR MAIN SUPPLY: gate valve side of day tank Allows fuel transfer from day tank to diesel engine or drain 1-in FO20 ROWPU space beside DAY TANK DRAIN: globe valve day tank Allows drainage of day tank 1-in FO21 ROWPU space on day DAY TANK FILL: gate valve tank Allows fuel transfer to day tank via transfer pump 1-in FO22 Void 3 starboard near TRANSFER PUMP SUCTION: gate valve shell at frame 75 Allows suction of fuel from storage tanks 3/8-in FO23 Void 4 port supply SERVICE GENERATOR 1 FUEL SUPPLY: ball valve line to SSG1 Allows fuel to be supplied to SSG1 3/8-in FO24 Void 4 starboard on SERVICE GENERATOR 2 FUEL SUPPLY: ball valve SSG2 Allows fuel to be supplied to SSG2 3/8-in FO25 Void 4 starboard on 20 KW GENERATOR FUEL SUPPLY: ball valve 20 kW SAG Allows fuel to be supplied to SAG 3/8-in FO26 ROWPU space portside ROWPU UNIT 1 HIGH PRESSURE PUMP ball valve in HP pump SHUTOFF: Allows fuel to be supplied to HP 1 diesel engine 3/8-in FO27 ROWPU space starboard ROWPU UNIT 2 HIGH PRESSURE PUMP ball valve in HP pump SHUTOFF: Allows fuel to be supplied to HP 2 diesel engine 1-in FO28 Void 3 port bottom of PORT STORAGE TANK DRAIN: gate valve port storage tank Allows fuel to be drained from port storage tank 1-in FO29 Void 3 starboard STARBOARD STORAGE TANK DRAIN: gate valve bottom of starboard Allows fuel to be drained tank (Barges 2 and from starboard storage tank 3 only) 1-in FO30 ROWPU space bottom DAY TANK DRAIN TO STORAGE TANKS: gate valve of day tank (Barges 2 Allows fuel to bypass day and 3 only) tank for return to storage tanks 1-in FO31 Void 3 starboard in day STORAGE TANKS DRAIN: gate valve tank fuel supply line Allows fuel to be drained from storage tanks to off-barge 3-7