Description
The filling of diaphragm seals is not a difficult process but it can’t be rushed; basically the air is removed (by applying vacuum to the external of the gauge) from the inside of the bourdon tube of the gauge and replaced with a fill fluid eg Silicon Oil or cooking oil (in the case of CPS).
The more air that is removed the better the fill will be. Because air is compressable any residual air will affect the accuracy of the gauge and reduce the life of the seal. Have too much air left behind and the thin stainless diaphragm in the seal will try and compensate for it and start to flex too far backwards and forwards as the pressure changes.
The diaphragm will work harder and crack and fail and you will lose the fill fluid into your process. So it is important that your fill fluid is compatible with your process. So be aware of suppliers offering the filling of seals in a couple of hours. We evacuate our system overnight to ensure there is no residual air.
So if you have a special application that requires a special fill just contact us we are sure to help.
Product code: SF
