Belimo EXT-H625P-400 - pressure-independent 2-way globe valve

Belimo EXT-H625P-400 is a 2-way globe valve with a mechanical differential pressure regulator and a control valve designed for operation by a Belimo actuator. The regulator compensates for pressure fluctuations and maintains a constant differential pressure across the control valve. A minimum differential pressure across the valve is required for correct flow control.

Key features and specifications

• DN 25, PN 16; flanged connection in accordance with EN 1092-2.
• V'nom: 1.1 l/s; Kvs theor.: 8 m³/h; stroke: 11 mm.
• Medium: water or water with max. 30% vol. glycol; medium temperature: 5...140°C [41...284°F].
• Maximum differential pressure across the control valve: 1000 kPa. To prevent cavitation, ∆pmax must be calculated in accordance with the design notes.
• Flow characteristic: equal percentage; permissible leakage: max. 0.02% of the Kvs value.
• Valve body: EN-GJL-250 (GG 25), with protective coating.
• Permissible mounting position: vertical to ±45° relative to the stem.

The valve is designed for closed water circuits (pH >7) and district heating networks. The direction of flow must match the arrow on the body.