Belimo R431 - 2-way ball valve with regulating orifice

Belimo R431 – valve with regulating orifice

2-way ball valve with male thread for open and closed water systems and water-side control in ventilation and heating systems. The integrated orifice provides an equal-percentage flow characteristic.

Key parameters

• Type: 2-way; DN 32; connection: G 2" male thread.
• PN 25; ps 1600 kPa; Kvs 16 m³/h.
• Fluid: water, water with a maximum of 50% by volume glycol.
• Fluid temperature: -10...100°C [14...212°F].
• Differential pressure: ∆pmax 200 kPa; closing pressure: 1400 kPa.
• Flow characteristic: equal-percentage; permissible leakage: bubble-tight, leakage class A.
• Body: nickel-plated brass; closing element and stem: stainless steel.
• Rotation angle: 90°; operating range: 15...90°.

At a fluid temperature of -10...2°C, extending the valve neck is recommended. The permissible fluid temperature may depend on the actuator type; limitations are given in the relevant actuator data sheets. The valve can be installed with the stem between vertical and horizontal, but not with the stem pointing downwards.