Hydraulic separator Afriso BLH 850 with manifold, 70 kW, 6x G1" female, 2x G1/2" female, automatic air vent, drain valve (Afriso 9085010)

Hydraulic separator Afriso BLH 850 with manifold is designed for central heating systems with outputs up to 70 kW. The unit combines a hydraulic separator and an integrated manifold to hydraulically decouple primary and secondary circuits, improve system stability, simplify connections for multiple heating circuits and support deaeration and maintenance operations. Built for boiler and heat-pump installations, the product accommodates several branch circuits while providing a drain connection and air removal to reduce air-related noise and imbalance.

Advantages

The Afriso BLH 850 provides a compact solution that integrates manifold functionality with hydraulic separation, eliminating the need for multiple separate components. Six female G1" outlets make connection of several secondary circuits straightforward, while two female G1/2" ports permit accessory and sensor connections. An automatic air vent reduces trapped air in the heating loop and the drain valve enables convenient flushing and maintenance. The design supports stable flow distribution between primary and secondary sides, which helps maintain set temperatures and reduces pump cycling.

Suitable for

• Residential and small commercial central heating systems up to 70 kW
• Installations with boilers or heat pumps requiring hydraulic decoupling
• Systems with multiple heating circuits or underfloor heating manifolds
• Projects where easier maintenance, deaeration and simplified piping are desired

Key specifications

• Maximum recommended system output: 70 kW
• Six female connections for circuit branches: G1"
• Two auxiliary female ports: G1/2"
• Integrated automatic air vent for continuous deaeration
• Drain valve for system flushing and service
• Combined hydraulic separator and manifold configuration for flow stabilization

How to use

Install the hydraulic separator inline between the primary heat source and the secondary distribution circuits following applicable plumbing and heating codes. Connect the boiler or heat pump flow and return to the primary ports and attach secondary circuits to the six G1" manifold outlets. Use the G1/2" ports for pressure or temperature sensors, filling loops or accessory connections as required. Ensure the automatic air vent is positioned to allow effective deaeration and open the drain valve for initial flushing and when performing maintenance. Fill, purge and pressurize the system according to manufacturer guidelines and local regulations prior to commissioning.

Usage recommendations

The unit is intended for use in closed hot water heating systems; select pipework and pumps sized for the rated output and ensure adequate mounting space and service access. Regularly check the automatic air vent and drain valve functionality and perform periodic system flushing and deaeration to maintain efficient operation.