... , R407C, R507/404A 2.Interchangeable orifice assembly 3.similar with ALCO expansion valve Characteristicsl Interchangeable orifice assembly,easier stocking,easy capacity matching, ... service.l Stable superheat setting.l Can be supplied with MOP(Max operating pressure)Protects the compressor motor ... stem anticlockwise one round,reduces superheat 0.3. thermal expansion valve similar with ALCO(TCL/TRF)