The HERZ STRÖMAX 4017 (FODRV) from HERZ Armaturen is a double regulating valve with an integral fixed orifice plate, designed for precise flow measurement and system balancing in small to medium hydronic networks.

Made from dezincification-resistant brass (CW612N), it provides durability and corrosion resistance. The valve integrates two test points for differential pressure measurement and features a digital preset handwheel for accurate and secure adjustment. Its compact design and threaded connections allow easy installation across heating, cooling, or domestic water applications.

The HERZ 4218 VODRV (Ductile Iron Series) from HERZ Armaturen is a flanged double regulating and commissioning valve designed for high-pressure hydronic balancing. Manufactured from ductile iron (EN-JL 1050), it combines strength with corrosion resistance, ensuring long-term durability under demanding HVAC and process conditions.

The valve includes a non-rising stem, digital handwheel preset display, and two test points for flow verification. With a PN25 rating, it is optimized for large commercial and industrial installations requiring precision control and hydraulic balancing.

The HERZ STRÖMAX-GF (VODRV Series) from HERZ Armaturen is a heavy-duty flanged double regulating and commissioning valve for precise flow control, differential pressure measurement, and shut-off in heating and cooling systems.

Manufactured from cast iron (EN-GJL 250) and available in PN16 and PN25 variants, the valve integrates two test points for differential pressure monitoring and a digital preset display for accurate flow adjustment.

Its non-rising spindle with a triple O-ring seal ensures smooth, maintenance-free operation, while the EPDM-coated seat provides tight sealing performance. The valve is ideal for balancing and commissioning large-capacity hydronic circuits in both commercial and industrial installations.