Plastic vertical pump due to the use of engineering plastics as the main body of the pump material, acid and alkali corrosion resistance, oxidation resistance, long service life, by the customer's recognition, in the process of using the customer response, the phenomenon of cracking of the pump body, that is, what is the reason for that? Plastic vertical pump pump body cracking reason analysis.

　　1, the selection of unreasonable, resulting in the pump liquid temperature close to the limit value so that the pump body material, resulting in softening and deformation of the pump body, leakage.

　　2, selection is not reasonable, resulting in the transport of liquid temperature is high, because the pump body softening, the degree of pressure resistance becomes smaller, easy to appear due to pressure, the pump body cracked.

　　3, selection of unreasonable, choose the pump, pressure resistance is not strong, resulting in cracking of the pump body by the pressure.

　　4, the process of assembly of the pump body screws locked too tight, too tight to lead to liquid transport, because the liquid temperature changes occur when the thermal expansion and contraction, the pump body does not have enough expansion coefficient and lead to cracking of the pump body.

　　5, selection error, resulting in the pump body by the transport of liquid corrosion, is the pump body corrosion cracking.

　　6, the pump is used for too long, natural aging, the degree of pressure resistance is reduced, which leads to cracking of the pump body.