Crane Process Flow Technologies offers a range of Saunders® Flouroplastic lined, A type diaphragm valves with a Tefzel ® coated option. Developed to provide corrosive resistance in the industrial processing industry, the TEF-Shield protective coating uses Du Pont’s Tefzel® (Ethylenetetraflouroethylene) material. The coating is applied before the injection moulding of the Perfluoroalkoxy (PFA) or Ethylenetetraflourorethylene (ETFE) lining, using an electrostatic powder coating method. By coating the valve body, bonnet and hand wheel, both internal and external corrosive protection is maximised. Available in DN 20-100 with a PFA lining and DN 20 – 150 in the ETFE lined option, the TEF-Shield protective coating is fully approved to BS EN ISO 9001:2000 and meets all necessary industry standards.