2, the sealing surface can be selected according to the conditions Cr13 stainless steel used, STL carbide. Choose flexible graphite filler or PTFE;
3, conical valve stem seal has inverted, sealing well. After the stem surface nitriding treatment, has good corrosion resistance, friction;
4, the choice of a variety of standard and connecting pipes form (eg: socket welding, butt welding, threaded connection).
