Control valve 2-way DN 100-150mm - Nodular Cast Iron | Clorius Controls

Clorius G2F – 2-Way Control Valve DN100–DN150

The Clorius G2F is a flanged, double-seated control valve made from spheroidal graphite iron EN-GJS-400-15, rated at PN16. It is designed for flow regulation in high-pressure hot water, steam, and thermal oil systems, applicable in district heating, central heating systems, industrial processes, and marine installations.

Construction and Standards

• Available sizes: DN100, DN125, DN150.
• Flanges conform to EN 1092-2.
• Counter flanges: DIN 2633.
• Actuator connection: G1B as per ISO 228.
• Shaft, seats, and cone: stainless steel.
• Gaskets: stainless steel foil and copper.
• Pressure/temperature diagram: DIN 2401.

Hydraulic Behavior

The G2F features a double-seated design, reducing hydraulic forces on the actuator for larger DN sizes, but allowing for higher permissible leakage compared to single-seated valves. Seat leakage is ≤0.5% of Kvs according to VDI/VDE 2174, thus not suitable for tight shut-off applications.

Kvs and Stroke

• DN100: Kvs 125 m³/h, stroke 20 mm, weight 32 kg.
• DN125: Kvs 215 m³/h, stroke 20 mm, weight 50 kg.
• DN150: Kvs 310 m³/h, stroke 20 mm, weight 70 kg.

Operation with Actuator

Without an actuator, the valve remains open via a spring. It closes with pressure on the shaft. In conjunction with thermostats, pneumatic or electric actuators, the valve closes upon temperature increase. For cooling circuits, a reverse-acting electric actuator or reverse-acting setup is used.

Installation

Can be installed with vertical or horizontal shaft. Up to 170°C, the thermostat or actuator can be mounted above or below the valve. Above 170°C, a cooling unit or high-temperature adapter is required, depending on actuator type.