HERZ Differential Pressure Controller – Cast Iron Body (F 4007 Series)
Flanged differential pressure controller maintaining constant system pressure balance.
HERZ DUCTILE IRON LUG TYPE LEVER OPERATED BUTTERFLY VALVE
The HERZ 4219 AF Lug Type Lever Operated Butterfly Valve from HERZ Armaturen is a manual shut-off valve made from ductile iron (EN-GJS 400-15) for high strength and durability. Fitted with a stainless-steel disc and stem, and EPDM seat, it offers excellent corrosion and pressure resistance.
The lever handle allows quick manual actuation, making it ideal for plantroom isolation and service valves. Its lug-type body ensures secure installation between flanges in PN10/16 systems.
- 🔹 Body: Ductile iron EN-GJS 400-15 (EN 1563).
- 🔹 Disc: Stainless steel (AISI 316 / 1.4408).
- 🔹 Stem: Stainless steel ASTM A276 Type 316.
- 🔹 Seat / O-Ring: EPDM (ISO 1691).
- 🔹 Lever: Steel ST14.03 (DN50–150), S235 (DN200–300).
- 🔹 Connection: Lug type, EN 1092-2.
- 🔹 Pressure Rating: PN16.
- 🔹 Temperature Range: -20°C to +110°C.
- 🔹 Medium: Water, glycol mixtures (25–50%).
- 🔹 Coating: Blue epoxy (RAL 5000).
- 🔹 Sizes: DN50–DN300.
- 🔹 Torque Range: 20–350 Nm.
- 🔹 Rugged ductile iron body for high mechanical strength.
- 🔹 Quick and simple lever operation.
- 🔹 Reliable sealing under varying pressures.
- 🔹 Corrosion-resistant components for long life.
- 🔹 Compatible with PN10/16 flange standards.
- 🔹 Building and industrial HVAC systems.
- 🔹 Water distribution and service isolation.
- 🔹 Cooling and heating circuits.
- 🔹 Process and utility lines.
Other Products From HERZ Armaturen
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HERZ Nickel-plated brass 2-way thermostatic control valve
HERZ Differential Pressure Controller – DZR Brass Body (4002 / 4202 Series)
Compact differential pressure controller with adjustable setpoint for small and medium systems.
HERZ DUCTILE IRON Y-STRAINER
High-strength ductile iron flanged Y-strainer for high-pressure HVAC and water systems