The 3M SF18-S is a water filtration system that uses the following filter cartridge:
The Cuno SF18-S Scale Inhibition Water Filter System inhibits scale build-up and corrosion in high-temperature foodservice equipment, including coffee brewers, broiler-based steamers, proofers, warewashers and hot tea applications. This 3M water filtration system features 3/4 inch National Pipe Thread (NPT) female inlet and outlet ports. This water scale inhibitor is also known as 3M part number 5607703.
The 3M SF18-S specifications: