Control valve 2-way DN 20-80mm Reverse acting for cooling applications - Cast Steel | Clorius Controls

Clorius H2FR – 2-Way Control Valve for Cooling

The Clorius H2FR is a flanged two-way control valve with a double-seated design, featuring a cast steel GP240GH / GS-C25 body and PN40 rating. It is reverse acting / normally closed: it remains closed by spring force without an actuator and opens when force is applied to the stem. With a thermostat or actuator, it functions as a cooling valve, opening upon temperature increase.

Technical Specifications

• DN20 to DN80.
• Flanges EN 1092-1 PN40, with ANSI/JIS options available on the product page.
• Actuator connection: G1B according to ISO 228.
• Seat, cone, and stem: stainless steel.
• Gasket: graphite with stainless steel and copper.
• Flow characteristic: quadratic.
• Seat leakage: ≤0.5% of Kvs according to VDI/VDE 2174.
• Control rangeability: Kvs/Kvr >25.

Kvs, Stroke, and ΔpL

DN20: Kvs 5 m³/h, 6.5 mm, max ΔpL 8.3 bar.
DN25: Kvs 7.5 m³/h, 7 mm, max ΔpL 8 bar.
DN32: Kvs 12.5 m³/h, 8 mm, max ΔpL 7 bar.
DN40: Kvs 20 m³/h, 9 mm, max ΔpL 6.6 bar.
DN50: Kvs 30 m³/h, 10 mm, max ΔpL 5.8 bar.
DN65: Kvs 50 m³/h, 11 mm, max ΔpL 10 bar.
DN80: Kvs 80 m³/h, 13 mm, max ΔpL 6.7 bar.

Applications

Used in industrial cooling water circuits, heat exchanger cooling, oil cooling, process lines, and marine cooling loops. Selection is based on Kvs, available differential pressure, actuator force, medium temperature, and acceptable double-seated leakage.

Installation

The valve 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.