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Designed with a 21/32-inch top width and a 51-inch nominal outside diameter
and SWT-4900 for a perfect fit in York YCAJ150 through YCAJ230 models
This valve is typically rated for water temperatures ranging from 35°F up to 250°F
Key Benefits for Technicians: Direct OEM Integration: Replaces Lochinvar 100073258 and legacy part numbers BNR2400 and 100135229 for a perfect mechanical fit
Optimized Ignition Path: The 6-inch assembly ensures proper spark gap positioning for reliable pilot burner ignition
Carrier HH18HA199 Limit Switch 318518-761 Designed with a 21/32-inch topThe Carrier HH18HA199 Limit Switch is a critical safety component designed for high temperature monitoring in HVAC induction combustion furnaces and residential heating systems. This genuine OEM replacement part is calibrated to trigger at a fixed 200 degree opening temperature, automatically interrupting the electrical circuit via its SPST (Single Pole Single Throw) configuration to prevent heat exchanger damage or hazardous rollout conditions.