Control valve 2-way DN 100-150mm Reverse acting for cooling applications - Cast Steel | Clorius Controls

Clorius H2FR DN100–DN150 – Reverse Acting 2-Way Control Valve

The Clorius H2FR is a flanged, double-seated 2-way control valve designed for high-flow cooling applications. It operates in a reverse acting / normally closed mode: without an actuator, the valve remains closed by a spring; it opens when force is applied to the stem. In setups with a thermostat or differential pressure controller, it opens with rising temperature, increasing the flow of the cooling medium.

Construction and Standards

• Sizes: DN100, DN125, DN150.
• Body: Cast steel GP240GH / GS-C25.
• Internal Parts: Stainless steel.
• Design: Double-seated.
• Actuator Connection: G1B as per ISO 228.
• Flanges: EN 1092-1.
• Seat Leakage: ≤0.5% of Kvs as per VDI/VDE 2174.
• Flow Characteristic: Nearly quadratic.
• Control Ratio: Kvs/Kvr >25.

PN, Kvs, and ΔpL

• DN100: PN25, Kvs 125 m³/h, stroke 20 mm, max ΔpL 12.1 bar, actuator force 800 N.
• DN125: PN25, Kvs 215 m³/h, stroke 20 mm, max ΔpL 9 bar, actuator force 800 N.
• DN150: PN16, Kvs 310 m³/h, stroke 20 mm, max ΔpL 7.5 bar, actuator force 800 N.

For DN150, the technical datasheet indicates PED approval only for PN16; PN25 is available for non-PED applications.

Typical Applications

• Cooling water in heat exchangers,
• Oil cooling,
• Industrial process cooling loops,
• Marine cooling systems,
• Lines requiring valve opening with temperature increase.

Selection is based on Kvs, available differential pressure, medium temperature, required actuator force, and acceptable double-seated leakage.

Installation

The H2FR can be installed with a vertical or horizontal stem. Up to 170°C, the thermostat or actuator can be mounted above or below the valve. Above 170°C, a cooling unit for the thermostat or a high-temperature adapter for the electric actuator is required.