Before we start, let’s take a look at what are considered “repairs” to safety and safety relief valves. Repairing a safety valve or safety relief valve could involve a number of operations, such as replacement, re-machining or cleaning of any critical part, lapping of the seat and disk — or any other operation which may affect the flow passage, capacity, function or pressure retaining integrity of the valve. Even disassembling, reassembling or making adjustments which affect a valve’s function should be considered a repair. This does not include testing or adjustments of new valves upon initial installation.
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