Manifold Loop End Cap Fitting; Type Hex Head; Nominal Size R20; End Connection Threaded; Material Brass; Material Specification ASTM F877; Pressure Rating 125 PSI; Temperature Rating 220 Deg F; Application Radiant Heating and Cooling System; Applicable Standard NSF, ISO; Overall Dimension 1.3 Inch Length x 0.5 Inch Depth x 1.3 Inch Height; Includes Gasket, O-Ring