Caleffi AutoFill™ Automatic Filling Valve, Pre-Adjustable, Series 553, 1/2 in Nominal Size, C x FNPT, 230 psi, 150 deg F, Media: Water/Glycol, Brass Body, NBR Seal, 4-3/4 in L
The automatic filling valve is a device consisting of a pressure reducing valve with compensating seat, visual system pressure setting indicator, an inlet filter, anti-scale internal parts, a shut-off valve (round knob on bottom) and a check valve. It is