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Seeking advice on sealing and flushing solutions for several pumps

2020-08-19View Original

Thread Content

Pump 1: Medium: Propylene + propane, with a small amount of polypropylene powder in the medium. Medium temperature: 40°C. Inlet pressure: 3 MPag. Outlet pressure: 3.3 MPag. Flow rate: 50. Pump type: OH2. The recommended sealing solution is 32+53B; the sealing fluid is white oil. Question: Why isn’t 32+52 recommended? Pump 2: Medium: Propylene. Medium temperature: 50°C. Inlet pressure: 2 MPag. Outlet pressure: 23 MPag. Flow rate: 15. Pump type: OH2. The recommended sealing solution is 13+52. Question: Why not use 11?
Reply #22020-08-24
53: pressure ratio is 52 higher than the medium, 52 lower than the medium; 13: pressure and pressure difference are both 11 lower

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