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A+R^® is aiming on absolute trouble-free process operation of metal seated ball valves to improve plant run-time and safety. Therefore A+R^® proofs what is promised to customers. Very advanced and custom made high temperature test equipment operated by A+R^® is used to verify the design of new ball valve technology development or process for any individual test required to customers specification. Temperatures of +900°C (1650°F) at internal valve test pressure of max. 40 bars can be demonstrated. A connected Helium leak detector ensures unique stem sealing tightness. Only test results showing emissions far lower than any available standard are acceptable for A+R^® products.

A+R^® balls and seats for metal seated ball valves are precisely mate-lapped. Manual lapping or semi- automatic lapping process on smaller sizes is used to achieve a paramount result in ball to seat ring contact. Extremely careful mate-lapping and blueing ensures to provide µm tolerances. A 100% contact of the entire seat ring over the related ball surface ensures a leak-free seat system. The ball and seat coating is a very important issue. Only vendors with the highest expertise of engineering and manufacturing experience are applied to A+R^® metal seated ball valves. It is imperative to select the appropriate coating for each individual severe application due to high temperature, high pressure or both, heavy solids, abrasive, erosive or corrosive media. Coatings such as Chrome Carbide, HVOF, Defusion Coatings are available.