HERZ DZR Brass 3-Way Control Valve (4037 Series)

The HERZ 4037 from HERZ Armaturen is a precision-engineered 3-way control valve made from DZR brass (CW602N) for corrosion resistance and long-term reliability. It enables linear flow regulation of heating and cooling water or air in closed systems, functioning as either a mixing or diverting valve. The valve features EPDM O-rings, a glass-fiber reinforced Teflon seat, and a stainless-steel spindle for smooth, leak-tight operation. It’s designed for integration with HERZ actuators and automation systems, allowing proportional or linear control.

  • 🔹 Body Material: DZR brass (CW602N)
  • 🔹 Spindle: Stainless steel
  • 🔹 Seat: PTFE with glass fiber reinforcement
  • 🔹 Seals: EPDM O-rings
  • 🔹 Pressure Rating: PN16
  • 🔹 Temperature Range: -15 °C to +130 °C
  • 🔹 Sizes: DN15–DN50
  • 🔹 Flow Characteristic: Linear
  • 🔹 Leakage: <0.02% of Kv value (mixing), 1% (diverting)
  • 🔹 Actuator Compatibility: HERZ 7712 series electric drives
  • 🔹 Accurate flow control and minimal leakage.
  • 🔹 Corrosion-resistant DZR brass ensures long service life.
  • 🔹 Linear response ideal for automation.
  • 🔹 Compact and easy to install.
  • 🔹 Compatible with HERZ electronic and thermal actuators.
  • 🔹 HVAC heating and cooling circuits.
  • 🔹 Mixing and diverting duties in hydronic systems.
  • 🔹 Central plant automation and control.
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