HERZ Motorized Butterfly Valves (Series 4219 with ITQ Electric Actuator)

The HERZ Motorized Butterfly Valve (4219 Series) from HERZ Armaturen integrates a precision-engineered butterfly valve with a high-torque ITQ electric actuator, providing automated on/off or modulating control for HVAC and water systems. Available in wafer (ZF) and lug (AF) configurations, it offers reliable performance in applications requiring high flow capacity and low pressure drop.

Constructed with a corrosion-resistant body and tight sealing design, the valve ensures dependable operation across a wide range of diameters (DN50–DN300). The ITQ actuator, featuring robust anodized aluminum housing, delivers torques up to 9000 Nm, IP67/68 protection, and full compliance with ISO 5211 mounting standards. Its modular design supports local and remote control, position feedback, and integration into building automation systems.

This combination of HERZ valve engineering and ITQ actuator automation guarantees precision, durability, and seamless control for demanding hydronic and industrial applications.

Valve:

  • 🔹 Type: Motorised butterfly valve (2-way)
  • 🔹 Body Design: Wafer or lug type
  • 🔹 Sizes: DN50–DN300
  • 🔹 Flow Coefficient (Kv): 91–9570 m³/h
  • 🔹 Operating Pressure: Standard PN16
  • 🔹 Operating Temperature: -20°C to +110°C (with suitable glycol mixture)
  • 🔹 Medium: Water and water-glycol mixtures
  • 🔹 Mounting: Between flanges
  • 🔹 Seal Type: Resilient seat for tight shutoff
  • 🔹 Flow Direction: Bidirectional

Actuator (ITQ Series):

  • 🔹 Torque Range: 100–9000 Nm
  • 🔹 Power Supply: 110/220 VAC 1Ph or 380/440 VAC 3Ph (optional 24 VDC)
  • 🔹 Enclosure: IP67 (standard), optional IP68 or explosion-proof (Ex d IIB T4)
  • 🔹 Control Type: On/off or modulating (4–20 mA, 0–10 VDC)
  • 🔹 Duty Cycle: 25–50% (S4)
  • 🔹 Travel Angle: 90° ±5°
  • 🔹 Manual Override: Auto-declutching handwheel
  • 🔹 Mounting Interface: ISO 5211 (F07–F30)
  • 🔹 Position Feedback: Potentiometer or transmitter (optional)
  • 🔹 Temperature Range: -20°C to +70°C
  • 🔹 Reliable automated control with precise electric actuation.
  • 🔹 Compact and durable design suited for large flow rates.
  • 🔹 High torque range for valves up to DN300.
  • 🔹 Waterproof and corrosion-resistant construction for extended service life.
  • 🔹 Compatible with most control systems (analog and digital signals).
  • 🔹 Low maintenance with IP67/68 sealing and stainless-steel fasteners.
  • 🔹 Optional fail-safe, local control, and explosion-proof configurations.
  • 🔹 Centralized HVAC systems (chilled and hot water loops).
  • 🔹 District heating and cooling plants.
  • 🔹 Water treatment and process automation.
  • 🔹 Industrial flow control and energy management systems.
  • 🔹 Integration into building automation systems (BAS/BMS) for remote operation and monitoring.
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