2.Petrochemical process pump according to API610 standard, press the machine to seal the PLAN11/PLAN in the standard API682 11+ 52 project comparisons:The importing pressure leads greatly and cause the PLAN11 machineses seal service life short.PLAN 11+52 projects cause the purchasing cost lead greatly.But choose to use to shield a pump can press the customer to request to design pressure, need not consider that the import press.

  3.Use a cost comparison:In addition to leaf's round, pump body etc. parts, it is petrochemical to pump 2 years have the article spare parts generally need to propose bearings/machine to seal/stalk head Luo mother/the card Huang/plum flower of the stalk/bearings mat/allied the stalk machine/machine press cover etc., but shield to pump general to need to propose bearings/stalk a set+push dint dish then.