As API certified manufacturer for centrifugal pump, GN Solids Control have all its pumps (centrigual pump, Screw pump, shear pump, slurry pump) approved by performance test before delivery. The pump test should per standard API610. It should be done with water under temperature 65℃ (150℉).
The centrifugal pump performance test should reach following requirements:
1) While doing performance test, the tested centrifugal pump should mount bearing and sealing as specified in the order.
2) If approved by the buyer, in order to not damage the sealing appointed on the order, or the test fluids is incompatible with original sealing, the pump can be test with replacement sealing
3) In any stage of the centrifugal pump performance test, it is not allowed any leakage over the rate of Standard ISO21049, or over the rate appointed between vendor and buyer.
If there is any leakage over the appointed rate during performance test, the centrifugal pump manufacturer should disassembly the sealing for maintenance. While open or disassembly the pump sealing, the operator should again do air test to the sealing.
While the centrifugal pump use water as performance test fluids, the fluids sealing suitable for water have no sign for leakage. It should double check the sealing performance per standard ISO21049:2004, and insure it is accordance with the zero visibility leakage standard.
4) If there was leakage, it should be test again after repairing the centrifugal pump sealing. And to insure the centrifugal pump have a good performance for sealing.
5) The lubrication oil pressure, temperature, and viscosity should be under the scope of the user manual offered to the buyer.
6) Regarding bearing request for pure oil mist lubrication system, it should be lubricated with suitable oil type.
7) All sealing parts and connection parts of the centrifuge pump should be checked careful to avoid leakage.
8) All alarming system, protection system and control system regarding centrifugal pump performance test should be checked, and adjust per test requirement.
After approved by all the aboved test, the centrifugal pump is qualified for delivery. That is why GN Solids Control, as one the world largest solids control and DWM manugacturing, can insure the quality of every its pump.