Paw - 01/2020

Item no.

€ / piece

up to 2200 l/h

31421

up to 950 l/h

3142

Description of function

Hydraulic separators are used when there are one or more heat generation

circuits/primary circuits with pump and one or more consumer/secondary

circuits with distribution pump in one system. Due to the operating

conditions in such a system, the pumps affect each other, leading to

unwanted changes of the throughput capacity and of the head in the

circuits. The hydraulic separator causes a hydraulic separation of the

connected circuits. It is thus possible to make the connected primary and

secondary circuits work independently regarding the hydraulics. The flow in

one circuit does not cause a flow in the other circuit when the pressure drop

in the hydraulic separator is insignificant.

When a hydraulic separator is used, each circuit (the primary and the

secondary circuit) must be equipped with a pump. Thus, a heat generation

circuit/primary circuit can be provided with constant throughput and a

consumer circuit/secondary circuit can be provided with variable flow.

These are the typical functioning conditions for modern heating and air

conditioning systems.

The figures on the left side show three possible conditions of hydraulic

stability.

Completely made of brass, completely insulated with EPP insulation, for the installation under a modular

distribution manifold DN 20 or separately on the wall (vertically or horizontally).

Connections:

3⁄4" PAW flange for nut 1" (top) 3⁄4" internal thread x 1" external thread, flat-sealing (bottom), 2 x for boiler

connection, others plugged 2 × 1⁄2" int. thread for immersion sleeve and fill and drain valve Width = 435 mm

Installation height = 120 mm Centre distance = 270 mm

completely made of brass, with separate flow and return line, to be mounted under a single HeatBloC DN 20. The

EPP insulation is integrated in the HeatBloC.

Can also be installed under a distribution manifold DN 20 (with mounting plate item no. 3125) or separately in

the pipe. For separate installation, two additional union nuts item no. 2055 are required and the insulation must

be provided on site.

Connections:

3⁄4" PAW flange for nut 1" (top)

3⁄4" int. thread × 1" ext. thread, flat-sealing (bottom)

2 × 3⁄4" int. thread, sealed with plug (to the side)

Width = 260 mm

Installation height = 80 mm

Centre distance = 90 mm

Prices excl. VAT • 01/2020 • Printed in Germany

174

PAW GmbH & Co. KG • 31789 Hameln • Germany • Phone: +49-5151-9856-0 • Fax: +49-5151-9856-98 • info@paw.eu • www.paw.eu