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Thanks for all yours comments. First of all I have to say we want these control valves for Ethylene plant I Furnace section in a petrochemical company. we already have control valves in service form Motoyama but we no longer can provide from this manufacturer. Now till now we have two option...

Hello all, we want to buy couple of valves for our company in petrochemical sector. the thing is that we are unable to buy valve from a manufacturer that we bought before. and we want to choose a new one. what criteria we should first consider that qualifies a manufacturer the most reliable...

Thanks for your comments Mr.Pellin. But I did not get what you mean by overflowing in rundown tank? Normally rundown tank should be filled in a way that FG1304 show flow inside it so we can understand that oil is flowing through rundown tank because if oil does not flow through FG it means maybe...

Dear all, In run down tank of lube oil system of compressors there are two restriction orifices as you can see in drawing attached. Problem ( in our particular situation ) is in start up condition when filling time of run down tank when HV1303 is fully open, time duration of filling tank is 40...