I. Overview: by Anhui dragon Valve Co. (http://www.ahjlbf.com/) produced IHF fluorine plastic alloy centrifugal pump series is designed and manufactured according to international standards process. Pump with metal shell lined with poly FEP (F46), pump cover, impeller and shaft sleeve with metal inserts outsourcing fluorine plastic overall sintering pressed, moving ring with PTFE filler material, and its corrosion resistant excellent sealing. Suitable temperature: -50 ℃ ~ 150 ℃, when the temperature exceeds 120 ℃, the pump impeller requires the use of high temperature materials. Second, the design features: IHF single-stage single-suction type fluorine plastic alloy chemical centrifugal pump (referred IHF centrifugal pump) is in accordance with international standards combined with non-metallic pump design and manufacturing process. Pump with metal shell lined with poly FEP (F46), pump cover, impeller and shaft sleeve with metal inserts outsourcing fluorine plastic overall sintering repression, seal with externally mounted advanced bellows mechanical seal, static ring made of 99.9% alumina ceramic (or silicon nitride), moving ring with PTFE filler material, its excellent corrosion resistant seal. Pump imports and exports of steel reinforcement to enhance the pump pressure resistance. Actual use shows that the pump has corrosion, wear, high temperature, aging, high mechanical strength, smooth operation, advanced and reasonable structure, reliable sealing performance strict, demolition, easy maintenance, long life and other advantages. Third, the pump seal: seal with externally mounted advanced bellows mechanical seal, stationary ring made of 99.9% alumina ceramic (or silicon nitride), moving ring with PTFE filler material, and its extremely corrosion resistant seal Well, to extend the service life of the mechanical seal, for conveying medium containing impurity particles, can be equipped with cooling water without single face hard on hard (silicon carbide on silicon carbide) mechanical seals, so users need to take into account when selecting a solid medium content.