Laars Heating Systems RV2017904 Gas Valve/Venturi Kit 321702-401 maintaining the original system's AFUE

maintaining the original system's AFUE ratings and operational safety without the need for field modifications

With a verified CSA and ASME rating

NEMA Rated Housing: Durable enclosure protects internal components from dust and debris common in mechanical rooms

5 to ETS 400 expansion valves and KVS electronic suction modulating valves

Laars Heating Systems RV2017904 Gas Valve/Venturi Kit 321702-401 maintaining the original system's AFUEThe Laars RV2017904 Gas Valve Venturi Kit is a critical replacement component for high efficiency Laars NeoTherm condensing boilers and volume water heaters. This assembly integrates a precision negative regulation gas valve with a high performance venturi to ensure the exact air fuel ratio required for modulating combustion. Engineered to maintain a 5: 1 turndown ratio, the RV2017904 facilitates stable ignition and consistent thermal output across