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.FEATURESBackflow preventer with atmospheric vent.Certified to CSA B64.3 and ASSE 1012. 1/2" (3/4") NPT female threaded connection with union or 1/2" sweat with union.Brass body.Filter in stainless steel.Check valve in PSU.Diaphragm and seals in EPDM.Maximum working pressure 175 psi.Maximum working temperature 210°F.
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