Siemens Building Technology 599-09237 Flange Gasket 318973-401 the internal plunger or diaphragm

the internal plunger or diaphragm in the 312-577 kit likely requires replacement

This part is primarily designed for the G41UF and G43UF upflow furnace series

High-Speed Airflow: Delivers a constant 3000 RPM to maintain effective static pressure and heat exchange rates

The Johnson Controls SEP91A-602R Power Element is a critical replacement component engineered specifically for 1/2" V46 Series Valves

For UDAP/UDAS models

Siemens Building Technology 599-09237 Flange Gasket 318973-401 the internal plunger or diaphragmThe Siemens 599 09237 is a specialized 3 inch flange bolt and gasket service kit designed to maintain the pressure tight integrity of Flowrite VF 599 Series valve assemblies. Engineered for iron body, ANSI Class 125 flanged connections, this kit is frequently utilized on the lower bypass ports of 3 way valves and standard 2 way 3 inch globe valve installations. Utilizing a high grade gasket service kit ensures a leak free seal capable of withstanding