Valve Body Defect
When valve bodies are first cast, they are subjected to hydro testing as required by various
regulators and by the customer who purchases
the valve bodies per API 6D. A fully assembled
valve is then retested to determine if the seals
are leaking and if any other problems can be
identified. Despite all efforts to produce flawless valves, some are sold to customers that
are returned under warranty with defects.