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  1. PTT

    Axial Thrust

    Thanks Pumpone, I will check in the ANSI document to get an approximation of the axial thrust. Regards
  2. PTT

    Axial Thrust

    Thanks guys for your fast reply to my request. On the impeller there're back vanes. Not very high i.e about 7/64" and also six balancing holes of 3/8" dia. The impeller outside dia. is 13", it's an open impeller with six vanes. The height of the vanes is 1-1/8". The speed is 1800 rpm. The...
  3. PTT

    Axial Thrust

    Hi, Anybody knows how to calculate or approximate the axial thrust acting on a centrifugal pump open impeller? Regards
  4. PTT

    Gear Pump Stuffing Box Pressure

    Thanks Poppeye for your reply and your solution. We are using on this pump a pressurized tank with nitrogen at 80 psig to maintain the barrier pressure. We are pumping polytrimethylene terephtalate polymer with this pump. It's not very abrasive except for the TiO2(titanium dioxyde) grade that...
  5. PTT

    Gear Pump Stuffing Box Pressure

    Dear all, We use a gear pump on a polymer transfer line. The suction pressure on this pumps is 8 PSIg and the discharge pressure is 110 PSIg. We use a John Crane double mechanical seal with a barrier fluid. The pressure of the barrier fluid is 80 PSIg. We experienced a failure of this seal and...
  6. PTT

    Connection details

    Thanks a lot flame
  7. PTT

    Connection details

    Hi there, I'm curious about the connection detail. If I turned the minor axis of wide flange beam in vertical direction and conect this beam to the web of a same size column,is it normally do?. It means I have to cope both flanges of beam out, right? So I have only thin web to transmit the...

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