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- Brand: CaleffiSeries: 553Type: Pre-Adjustable
- The automatic filling unit is a device consisting of a pressure reducing valve with compensating seat, an inlet filter, a shut-off valve 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 stable at a set value, automatically filling up with water as required. This product has the characteristic of being pre-adjustable, which means that it can be adjusted at the required pressure value before the system charging phase. After installation, during the filling or topping-off phase, the water feed will stop when the set pressure is reached. A pre-assembled version is also available, complete with upstream backflow preventer.
- Anti-scale with visual system pressure setting indicator|Complete with manual shut-off valve, strainer and check valve|3 to 60 psi setting pressure range|15 psi Preset outlet pressure|PA 66 GF 30 cover|0 to 60 psi/0 to 4 bar pressure gauge scale|Suitable fluids: Water, glycol solution|Maximum percentage of glycol: 50%
- Caleffi AutoFill Automatic Filling Valve, Pre-Adjustable, Series: 553, 1/2 in Nominal, MNPT x FNPT, 230 psi, 150 deg F, Brass Body, NBR Seal, 4-13/16 in W, Import