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        Caleffi 553542A
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        Caleffi 553542A

        Caleffi AutoFill 553 553542A Boiler Feed Valve, 1/2 in Nominal, FNPT x MNPT Conn

        Caleffi 553542A

        The automatic fi lling valve is a device consisting of a pressure reducing valve with compensating seat, visual system pressure setting indicator, an inlet fi later, anti-scale internal parts, a shut-off valve (round knob on bottom) and a check valve. It is installed on the water inlet piping in sealed heating systems, and its main function is to maintain the pressure of the system at a set value, automatically fi lling up with water as required.

        Caleffi AutoFill Boiler Feed Valve, Series: 553, 1/2 in Nominal, FNPT x MNPT Connection, 230 lb/sq-in, 3-60 lb/sq-in Setting, 15 lb/sq-in Factory Pressure, Brass Body, NBR Seal, 150 deg F, 4-13/16 in L x 5.937 in H

        Body Material      :      Brass
        Dimensions      :      4-13/16 in L x 5.937 in H
        • Anti-scale with visual system pressure setting indicator
        • Complete with manual shut-off valve, strainer and check valve
        • Automatic fast-filling
        • Maintains stable pressure at pre-setting
        • Anti-scale polymer materials
        • Built-in shut-off valve and check valve
        • Pre-calibration
        • PA 66 GF 30 cover
        • Water, glycol solution suitable fluids
        • 50% maximum percentage of glycol
        • Pre-adjustable, automatic filling valve