All CLAMPSEAL® valves are distinguished by a size code which defines tool and part interchangeability. The size code is stamped on all valve bodies just below the threads and directly above the round raised pad where the steel heat code is stamped. Size codes consist of a number followed by a letter. The number refers to the body forging size and the letter refers to the seat ring size.
  This table lists Conval's standard size codes for given configurations. Reference size code when ordering parts or tools.
Always confirm the size code by inspecting the valve.

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