
HERZ CAST IRON DOUBLE REGULATING & COMMISSIONING VALVES
Flanged cast iron double regulating and commissioning valve for hydronic balancing in large HVAC networks
The HERZ Ductile Iron Gate Valve from HERZ Armaturen is a PN25-rated isolation valve engineered for reliability in demanding industrial and HVAC installations. Constructed from ductile iron (EN-JL 1050), it offers superior strength and pressure resistance compared to standard grey cast iron models.
Fitted with stainless-steel seat rings, wedge trim, and packing hardware, it delivers exceptional corrosion resistance and long operating life. The valve’s graphite-asbestos-free seals ensure leak-tight performance even under elevated temperatures.

Flanged cast iron double regulating and commissioning valve for hydronic balancing in large HVAC networks

Cast iron 3-way flanged valve for mixing and diverting in large hydronic systems

Forged brass 3-way mixing and diverting valve

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