
HERZ DZR AIR VENT
Automatic DZR brass air vent for bleeding air from heating and cooling systems.
The HERZ STRÖMAX-AGF Globe Valve (4218 Series) from HERZ Armaturen is a flanged shut-off and commissioning valve for heating and cooling systems. Made from cast iron (GJL 250) with a brass upper part and EPDM seals, it provides long-term reliability and tight sealing.
The non-rising spindle ensures compact design and easy operation in all mounting positions. Available in DN25–DN80, the valve operates up to PN16 and 110°C, making it ideal for large hydronic installations. Its epoxy coating (RAL5000) protects against corrosion and mechanical wear.

Automatic DZR brass air vent for bleeding air from heating and cooling systems.

Compact differential pressure controller with adjustable setpoint for small and medium systems.

The HERZ DZR SMART PICV (4006/4206 SMART Series) with Three Test Points

Flanged differential pressure controller maintaining constant system pressure balance.