PRESSURE TESTING VENTURIS
PRESSURE TESTING VENTURIS
(OP)
hi guys,could anybody outthere help me,im having alot of trouble sealing off fabricated venturis for pressure testing sizes are 36'' 900Lb, 48'' 6oolb test pressures 206bar and 120 bar using spiral wound graphite filled gasket onto scrolled faces, bolts are 2 1/2'' and 2 3/4''.
i am using hydraulic torque wrench to correct settings,am i using right type of gasket or should i be using some kind of sealant with them would appreciate your help/comments
i am using hydraulic torque wrench to correct settings,am i using right type of gasket or should i be using some kind of sealant with them would appreciate your help/comments





RE: PRESSURE TESTING VENTURIS
RE: PRESSURE TESTING VENTURIS
What is the code or standard?
On such a large flange I would be very careful if I was very near the allowables for a particular flange. It also get a little more interesting as a flange advances in diameter.
You should be using more than one hyd wrench at at time, a very minimum of 3.
Can you come back with more detail like torque on nuts and tightening secquence?
Number of bolts/studs and material?
RE: PRESSURE TESTING VENTURIS
RE: PRESSURE TESTING VENTURIS
MAX TORQUE FOR 2 3/4 '' bolts 10250Nm .BOLTS AND STUDS ARE B7 2H
RE: PRESSURE TESTING VENTURIS
RE: PRESSURE TESTING VENTURIS
What bolt stress are you trying to achieve?
How many wrenches?
What is your design pressure and temp as your test pressure is near the max?
RE: PRESSURE TESTING VENTURIS
RE: PRESSURE TESTING VENTURIS
As far as the gasket I don't think you have properly seated it to where it will hold.
I hate to ask but can you comeback with the number of studs and exactly which flange you have?