9 www.stauff.com/6/en/#9 Catalogue 6 § Edition 06/2024 Introduction a Ball valve body made of European quality steel with the option of full material identification and retraceability b Ball with a full bore with no cross-section restriction in the ball valve c Hard chrome-plated balls to reduce friction and seat wear d Ball seats made of Delrin® (POM) to assure low operating torques e No exposed threads in the flow passage f High-quality design with a large thrust washer (strength of 1mm) and back-up ring to protect the o-ring against extrusion Gradual changeover of the standard surface coating of selected series from "Carbon Steel, zinc/iron-plated" to "Carbon Steel, zinc/nickel-plated" a b c d e f Design Features of STAUFF Valves
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