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and ZR29KC-PFV-930
they are functionally identical parts used interchangeably in technical submittals and electrical schematics
Smith 100167774 Control Board is a critical OEM replacement part designed specifically for the Lochinvar Knight XL KBN399 series heating boilers
or diagnostic LEDs on the main board indicating a communication error
ensuring consistent performance for natural gas and LP vapor systems in hospitals
Trane VAL18751 TXV 318820-201 and ZR29KC-PFV-930The Trane VAL18751 is a high performance Thermal Expansion Valve (TXV) designed for precise refrigerant metering in 1. 5 ton HVAC systems. Engineered for reliability in residential and light commercial applications, this genuine OEM Trane expansion valve features a 3 8" x 1 2" ODF (Outside Diameter Female) solder connection, ensuring a secure, leak free fit during brazing. The integrated 5 foot capillary tube provides the necessary reach for flexible
