www.pmmag.com/articles/84518-circulator-with-check-valve
Circulator With Check Valve
December 29, 2000
Circulator With Check Valve
Grundfos Pumps Co.'s model UP 15-42 FC Brute circulator with built-in check valve lowers labor costs and protects against reverse flow or counter-flow when the zone circulator is off. Use with the Grundfos low-volt control to directly signal circulator through room thermostat.
Grundfos Pumps Co.'s model UP 15-42 FC Brute circulator with built-in check valve lowers labor costs and protects against reverse flow or counter-flow when the zone circulator is off. Use with the Grundfos low-volt control to directly signal circulator through room thermostat.
Circle 212
