Laars Heating Systems RA0079000 Gauge 324846 701 managing the variable frequency drive managing the variable frequency drive (VFD) cycles to modulate compressor output based on real time thermal load This industrial grade control valve is a reliable solution for technicians requiring accurate 500:1 rangeability and long term durability in sediment heavy hydronic loops The Laars RA0079000 Typically features a standard 1 2 inch NPT or similar connection (check your existing well) and is designed for a direct mount replacement into immersion wells Please contact our team to confirm compatibility or technical details before purchasing