Click to expand Tap to zoom 3/4-Inch Clip-On Aquastat Control by Grundfos Save $ -28.10 $ 28.10 SKU 595444 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart 3/4-Inch pipe mounted aquastat kit. Optionally used with timer. Temp range 85F - 105F degrees.