Cryo-Tek-100 Anti-Freeze / Glycol (1 Gal) Zone Valve 4" OC-234SF

4" OC-234SF

3" OC-79SF

which can damage your tankless water heater

Unlike your typical zone control the ZON-0600 features a full color touch screen display that allows you to view multi-zone operation status and zone temperatures

Cryo-Tek-100 Anti-Freeze / Glycol (1 Gal) Zone Valve 4" OC-234SFHercules Cryo Tek 30 gal 100 Antifreeze is a ready to use 55% Virgin Propylene Glycol formula. It's designed for hydronic heating and cooling closed loop systems, most solar heating systems, snow melts, radiant heat and general plumbing systems. Behold the power of Hercules, products built to last and trusted by plumbers to withstand even the toughest conditions. Applications Closed Loop Systems, Plumbing, Hydronic Systems, Solar Heating Systems,