Designed as the direct replacement for 94-396

Designed for high-pressure performance with a 680 PSI maximum working pressure

Engineered for industrial-grade durability

eliminating hardware mismatching during HVAC system diagnostics

Can I use this for R-22 to R-410A retrofits

Weil McLain 383-500-601 Temperature Sensor Designed as the direct replacementAs a seasoned technician, you know that keeping a hydronic system in check starts with reliable data feeding into the control module. The Weil McLain 383 500 601 is a high precision system temperature sensor designed as a direct replacement component for Ultra Gas and commercial boiler units. This 12k Ohm resistance NTC sensor provides the real time thermal feedback required for proper mod con operation, ensuring the boiler control module can