DANFOSS 003L603002 1IN AVDO PRES. DIFF. VLVE

Danfoss Automatic Straight Bypass Valve, AVDO 25 Series, 1 in Nominal, Union MNPT Connection, 145 psi, 0.22 gpm Flow Rate, 3.74 in Top to Inlet Center, Brass Body, Stainless Steel Trim, EPDM Softgoods, 248 deg F, 1.85 in Dia x 7 in L

AVOID self-acting constant flow controls are used to maintain a minimum flow rate (e.g. through a low water content gas boiler) or to control differential pressure in a heating system. The closing of radiator or zone valves due to reduced heating demand may result in low flow and increased system differential pressure (potentially deadly heating pumps). AV valves open with a falling system load and allow flow through a bypass line whenever the differential pressure through the valve exceeds set point ensuring a minimum flow rate or a system differential pressure at minimum system load.