China chemical industry valve manufacturer supply PFA lined cast steel fittings where possible, we recognise the advantages this lining material has over isostatically lined PTFE components. Fittings lined in PFA or isostatic PTFE will perform satisfactorily provided that their manufacture and materials of construction are of the highest quality. Poor quality materials and fabrications will produce an unsatisfactory performance and such lined fittings may be subject to premature atastrophic failure. China chemical industry valve manufacturer has chosen to use steel castings lined with high molecular weight PFA’s for its lined fittings. The reasons for this are technical and not cost driven. The use of PFA in castings provides the best combination of lining performance, housing strength and consistency.