Control valve 2-way DN 65-150mm Reverse acting for cooling applications - Gun Metal | Clorius Controls

Clorius L2FR – 2-Way Control Valve for Cooling DN65–DN150

The Clorius L2FR is a flanged two-way control valve made from gun metal, designed for large flow cooling applications. It is classified as reverse acting, with sizes ranging from DN65 to DN150, featuring a flange connection and primarily PN10, with a DN80 PN16 version available.

Construction and Operation

The reverse acting function is selected when an increase in temperature should open the valve and increase the flow of the cooling medium. It can be combined with a Clorius thermostat or an electric actuator, depending on the control signal and available shaft force.

The L2F DN65–DN150 platform uses two balanced seats, offers a nearly linear flow characteristic, leakage ≤0.5% of Kvs, and actuator connection G1B. Key materials include CuSn5Zn5Pb5-CRG for body/seats/cone, shaft 1.4436, O-ring NBR 90, and gasket Reinz-AFM34.

Kvs and Selection Dimensions

• DN65: Kvs 50 m³/h, stroke 10.5 mm.
• DN80: Kvs 80 m³/h, stroke 11 mm.
• DN100: Kvs 125 m³/h, stroke 13 mm.
• DN125: Kvs 215 m³/h, stroke 18 mm.
• DN150: Kvs 310 m³/h, stroke 21 mm.

Applications

Suitable for cooling water, cold or warm seawater, heat exchangers, oil cooling, maritime cooling loops, and industrial processes requiring increased flow with rising temperature. The product page also mentions compressed air, demi water, heating, solar energy, and steam; these require temperature control, PN, material, and acceptable leakage checks before selection.

Maintenance

The L2FR spare parts PDF provides separate packing and trim sets for DN65–DN150, with components such as cone, lower seat, spring, spindle, and upper seat. This is useful for preventive maintenance, seat leakage restoration, or repair after wear due to seawater or solid particles.