Dears;
we have recently change the plug and seat of a globe valve (gas CH4; leakage class VI).
the DP pressure in the data sheet is 39 bars.
once put in service the pressure transmitter downstream the valve is showing 2.5 bars, even if the valve is in close position, pressure upstream is 41.5 bars.
is it normal ? for your info, the manual valve downstream the valve is in close position.
what is the downstream pressure tolerated in this case?
we have recently change the plug and seat of a globe valve (gas CH4; leakage class VI).
the DP pressure in the data sheet is 39 bars.
once put in service the pressure transmitter downstream the valve is showing 2.5 bars, even if the valve is in close position, pressure upstream is 41.5 bars.
is it normal ? for your info, the manual valve downstream the valve is in close position.
what is the downstream pressure tolerated in this case?