Engineered with a robust bronze body (ASTM B584)

the 664349R provides seamless backward compatibility and enhanced mechanical reliability

utilizing a genuine ECR International part ensures exact dimensional compatibility with the cleanout cover assembly

Whether you are performing a seasonal teardown or a liquid line service

Advanced Distributor Products 176799953 Piston 321142-301 Engineered with a robust bronzeThe ADP 176799953 is a precision engineered #53 ton piston designed for reliable refrigerant metering in residential HVAC systems. Also known as a fixed orifice metering device, this genuine ADP replacement part is critical for maintaining the correct pressure drop between the high and low sides of the cooling circuit. Specifically sized for 1. 5 ton R22 or 2 ton R410A evaporator coils, it ensures the optimal flow of refrigerant to maximize heat