Caleffi AutoFill™ 553 Pre-Adjustable Automatic Filling Valve, 1/2 in, MNPT x FNPT, 230 psi, Brass, Import

256860 MFG #: 553542A
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Caleffi AutoFill™ Automatic Filling Valve, Pre-Adjustable, Series: 553, 1/2 in Nominal Size, MNPT x FNPT, 230 psi, 150 deg F, Brass Body, NBR Seal, 4-13/16 in W, Import

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.

QTY
  • Features
  • Videos
  • 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%
  • Standard/Approvals: ASSE 1012, cCSAus B64.3
  • WARRANTY: Limited