RTJ orifice plates incorporate integral gaskets for installation between ring-type joint flanges. Based on proven technology, there are no moving parts and they are suitable for high-temperature and high-pressure applications.
Plate thickness depends on line size and differential pressure and should be sufficient to prevent the plate from deforming under operating conditions.
RTJ type orifice plates may be machined in one piece, or alternatively from two pieces, with an orifice plate screwed onto a carrier ring/gasket.
Ring Type Joint (RTJ) orifice plates are recommended for clean liquids, gases and low velocity steam flows.