Corrosion-free Polyvalves from Kerotest Manufacturing come in standard and full-port design, from 0.5 to 12-in. diameters. The valves are made of medium and high-density polyethylene. Kerotest ...

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Description: The Type 522 Needle Valve may be used in a wide range of services where SYGEF® is suitable in the chemical and general environmental limits of the installation. Specific applications ...