Negative Min Suction Pressure on a Pump.
Negative Min Suction Pressure on a Pump.
(OP)
Hi Everybody,
I have a quick question about the Suction Pressure of a Pump.
I am reviewing a Datasheet and I looked at the Min Suction Pressure and it is Negative.
I was wondering if any of you can explain the meaning of this.
I was told that it was a estimation for the Vendor so that the Mechanical Seal selected by the Vendor can prevent Air
coming in to the Suction of the Pump.
I did not get that very well so a deep explanation would be very helpful and appreciated of course.
Thanks All,
Mech GRaduate.
I have a quick question about the Suction Pressure of a Pump.
I am reviewing a Datasheet and I looked at the Min Suction Pressure and it is Negative.
I was wondering if any of you can explain the meaning of this.
I was told that it was a estimation for the Vendor so that the Mechanical Seal selected by the Vendor can prevent Air
coming in to the Suction of the Pump.
I did not get that very well so a deep explanation would be very helpful and appreciated of course.
Thanks All,
Mech GRaduate.





RE: Negative Min Suction Pressure on a Pump.
Otherwise, air will be sucked in across the seal faces, can cause chatter and destroy them.