Eccentric reducer
A reducer with one side flat, so the centre-line shifts. Fitted flat side up on a horizontal pump suction so vapour cannot collect in a high point and cause cavitation; flat side down where the line must drain completely.
Piping inspection and supervision, explained from scratch
A reducer with one side flat, so the centre-line shifts. Fitted flat side up on a horizontal pump suction so vapour cannot collect in a high point and cause cavitation; flat side down where the line must drain completely.