the 194 and 94 Series often utilize 1-1/4 inch NPT tappings or are rated for higher pressures (up to 250 psi)

Constructed with a heavy-duty aluminum housing

The 1/4" compression fitting ensures a secure connection

For contractors managing HVAC troubleshooting

The stainless steel spring provides reliable force for automatic reseating

Grundfos 00595444 Aquastat 323613-751 the 194 and 94 SeriesThe Grundfos 00595444 Aquastat is a professional grade thermostatic control kit designed specifically for integration with Grundfos UP Series circulators. This 3 4 inch clip on aquastat is engineered to optimize hot water recirculation systems by managing pump cycles based on real time line temperatures. The surface mount sensor features a bi metallic disc that triggers the circulator to engage at 85F and cycle off once the temperature reaches 105F.