For techs performing a field conversion or replacing a clogged gas jet

providing the high-voltage spark necessary for dependable burner start-up every time

Engineered with a robust bronze body (ASTM B584)

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

Equipment Protection: Built-in 5-minute time delay prevents rapid compressor cycling to ensure long-term system health

Advanced Distributor Products 176799953 Piston 321142-301 For techs performing a fieldThe 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