Answer / nilesh

It means 3 way & 2 position valve. As its name indicates it
will control the direction. The position of the spool
inside the valve decides the direction of air or liquid
passing through it. Spool position can be changed manually,
electrically or pneumatically.

I am a mechanical student.And have cleared the written for NTPC. Please suggest what and how to prepare for the interview.i have got only 2-3 weeks in hand.

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