These two part numbers refer to the exact same Warrick Series 26 control

The 121-42-598-00 is designed for the 122-12 series

it provides a stable 32 Cv flow capacity and handles pressures up to 25 PSI

ensuring accurate calibration in the field

The 7-inch OEM replacement lead is built with high-grade insulation to withstand the thermal stress and vibrational demands found within condenser and evaporator cabinets

Carrier EA52PH059 Piston 318973-401 These two part numbers referThe Carrier EA52PH059 Piston is a precision engineered fixed orifice metering device designed for specific Carrier, Bryant, and Payne residential evaporator coils. As a critical component in the refrigerant circuit, this 0. 059 inch orifice piston ensures the correct pressure drop and flow rate of R 410A refrigerant into the evaporator header. For contractors performing HVAC piston replacement, the EA52PH059 provides a reliable, mechanical alternative