Q:Where should the fire department connection be located in a dry pipe system?
Between the system control valve and the water supply
After the dry pipe valve
Between the water supply and the sprinkler heads
Between the system control valve and the dry pipe valve
Answer: D) Between the system control valve and the dry pipe valve.
Reference: FIRE PROTECTION HANDBOOK 20th
15-66 SECTION 15 ■ Water Supplies for Fixed Fire Protection
Fire Department Connections
For a dry pipe system, the fire department connection should be between the system control valve and the dry pipe valve. This makes it possible to pump water into the system even if the valve is closed. If there are two or more sprinkler system risers, each with its own separate connection to a public main, each system must have its own fire department connection. If more than one riser is connected to a yard system, the fire department connection should feed into the yard system on the supply side of all riser shutoff valves, and there must be a check valve in all other water supply connections into the yard system to prevent backflow and loss of water supplied through the fire department connection. If one riser is shut off, the fire department connection can still supply all other risers. If two or more sprinkler system risers are fed by one sprinkler connection, one fire department connection can supply both risers