HERZ DN25 hydraulic separator 1451353

The HERZ PUMPFIX DN25 hydraulic separator is designed for hydraulic separation of the primary and secondary circuits in heating systems. It functions as a compensation chamber, allowing individual heating circuits to operate independently and reducing the influence of primary circulation pumps on the flow rates and pressures of secondary circuits.

The HERZ hydraulic separator is pressure tested during the manufacturing process and is designed to be compatible with the HERZ PUMPFIX DN25 distributor. The DN25 separator is installed horizontally directly underneath the PUMPFIX DN25 distributor. A PUMPFIX DN32 pump group can be mounted directly, while a DN25 pump group can be connected using HERZ adapter 1 4510 51.

Technical information:

Manufacturer: HERZ

Series: HERZ PUMPFIX

Product type: hydraulic separator / hydraulic switch

Article number: 1451353 / 1 4513 53

Nominal size: DN25

Maximum flow rate: 3 m³/h

Maximum operating temperature: 110 °C

Maximum admissible pressure: 4 bar

Overall length L: 420 mm

Height H: 162 mm

H1: 110 mm

L1: 55 mm

L2: 250 mm

L3: 125 mm

L4: 110 mm

Connection G: G 1 1/2", female thread with free-turning nut

Connection G1: G 1 1/4", male thread

Connection G2: G 1/2", female thread

G2 application: temperature sensor connection

Fittings material: cast iron EN-GJMW-400-5 according to DIN EN 1562

Flat seals: EPDM

Insulation: EPP

Casing: black powder-coated steel

Medium: heating water according to ÖNORM H5195 or VDI 2035

Permitted ethylene or propylene glycol concentration: 25–50%

Installation position: horizontal

Compatible with: HERZ PUMPFIX DN25 distributor

PUMPFIX DN32 pump group connection: direct

PUMPFIX DN25 pump group connection: with HERZ adapter 1 4510 51

Maintenance: no special maintenance is required after correct installation.