VALVES USED ONBOARD TANKER SHIP

 Valves:

1. Manifold valves
2. Tank valves 
3. Drop valves 
4. Crossover valves 

Where its fitted

 Manifold Valves:

• These valves which are constructed in lines flow to the connecting flanges.

Master valves:

• At each line where a fore and aft pipe lines passes through a tank sich hand operated valve is fitted in the line, these are known as master valves.

Tank valves:

• The Valve which is  close to each bell mouth is located as valve which controls the flow of oil into and out of the tank.

Drop valves:

•  Each main line has one or two drop lines and drop valves control the flow of oil in those line.

Crossover valves:

• Athwart ship tank line joining the line are known as a crossover lines and the crossover valves separating the main line from other as well as separating individual tanks.