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Caleffi 574011 Automatic Filling Unit with BA Type Backflow Preventer

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Regular price £540.00 GBP
Regular price £693.20 GBP Sale price £540.00 GBP
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CALEFFI, 574011. Compact automatic charging unit with BA type backflow preventer, shut-off valve and strainer. With insulation. Backflow preventer conforming to EN 12729. Connection: G 1/2" A (ISO 228-1) M. Maximum working pressure: 10 bar. Medium temperature range: 2–65 °C. Adjustment pressure range: 0,2–4 bar.

Technical data

Adjustment pressure range: 0,2–4 bar
Medium temperature range: 2–65 °C
Maximum working pressure: 10 bar
Function

The charging unit assembly is composed of a shut-off valve with an
inspectable strainer, a BA type controllable reduced pressure zone
backflow preventer and a pre-adjustable filling unit.
It is installed on the water inlet pipe in sealed heating systems and its main
function is to maintain the pressure of the system stable at a set value,
providing automatically a re-fill of the missing water.
This product has the peculiarity of being pre-adjustable. That means it can
be adjusted at a desired pressure value before the system filling stage.
The backflow preventer is inserted to prevent the contaminated water
of the closed heating circuit from flowing back into the domestic water
supply network, in compliance with EN 1717 standard prescriptions.
The device is proposed complete with pre-formed shell insulation and
with a compact dimension design to make its hydraulic installation easier.
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