Control valve 2-way DN 15/4-50mm - Cast Steel | Clorius Controls

Clorius H1F – 2-Way Control Valve DN15/4–DN50

The Clorius H1F is a flanged, single-seated control valve with a cast steel GP240GH / GS-C25 body and a nominal pressure rating of PN40. It is designed for regulating hot water, steam, and thermal oil in industrial processes, district heating, central heating systems, and marine installations.

Construction and Standards

• DN15/4 to DN50.
• Flanges according to EN 1092-1 PN40 or ANSI B16.5 Class 150.
• Counter flanges per DIN 2635.
• Actuator connection: G1B per ISO 228.
• Shaft, seat, and cone: stainless steel.
• Gasket: graphite with stainless steel sheet.
• Pressure/temperature diagram per DIN 2401.

Hydraulic Characteristics

The H1F is a single-seated, tight-closing valve with a quadratic flow characteristic. Seat leakage is ≤0.05% of Kvs according to VDI/VDE 2174, and the control ratio Kvs/Kvr is >25. The quadratic characteristic is maintained until the flow drops below approximately 4% of full flow.

Kvs and Stroke

• DN15/4: Kvs 0.20 m³/h, stroke 6 mm.
• DN15/6: Kvs 0.45 m³/h.
• DN15/9: Kvs 0.95 m³/h.
• DN15/12: Kvs 1.7 m³/h.
• DN15: Kvs 2.75 m³/h.
• DN20: Kvs 5 m³/h, stroke 6.5 mm.
• DN25–DN50: Kvs 7.5–30 m³/h, stroke 7–10 mm.

Operation with Actuator

Without an actuator, the valve remains open via a spring. It closes with pressure on the shaft. Compatible with thermostats, differential pressure controllers, electric or pneumatic actuators. In temperature rise, the standard setup closes the valve; for cooling circuits, a reverse acting electric actuator or reverse acting valve with self-acting thermostat is required.

Applications

Suitable for steam exchangers, water heaters, thermal oil skids, industrial heating circuits, and process lines requiring low seat leakage and PN40 body. The product page also mentions compressed air, cooling, demi water, heating, solar energy, and steam; final selection should consider temperature, pressure, Kvs, and material compatibility.

Installation

Installation can be 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 for the thermostat or high-temperature adaptor for the electric actuator is required.