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motorized valves
The S1-031-09170-000 is an upgraded Source1 component
or internal mechanism repair to ensure a proper seal upon reassembly
Standard service for VP513 and VP517 valves requires two spacers per valve
Common Questions Which boiler models use the 511-330-221 assembly
Lochinvar & A.O. Smith 100093811 Door Switch 340155-7024 motorized valvesWhen you're troubleshooting a natural gas water heater that won't ignite or is throwing intermittent error codes, the Lochinvar & A. O. Smith 100093811 Door Switch is a critical safety component to inspect. Designed specifically for the NAT FG40T40 series, this OEM replacement door switch serves as a definitive safety interlock, ensuring the burner assembly is correctly isolated and the access door is fully secured before allowing the ignition
