Belimo R3050-40-S4 - 3-way regulating ball valve

Belimo R3050-40-S4 – 3-way regulating valve

Regulating valve with regulating orifice for closed water systems, designed for water-side control in ventilation and heating systems. Suitable for water or water with a maximum of 50% by volume glycol.

Key features

• Design: 3-way; DN 50; PN 25.
• Connection: Rp 2" female thread.
• Kvs: 40 m³/h; flow through bypass B – AB: 70% of the Kvs value.
• Medium temperature: -10...120°C [14...248°F].
• Differential pressure: ∆pmax 350 kPa; closing pressure: 1400 kPa.
• Flow characteristic: A – AB equal percentage, B – AB linear.
• Leakage: A – AB bubble-tight, leakage class A; B – AB leakage class I, 1...2% of the Kvs value.
• Nickel-plated brass body; stainless steel closing element and stem.

Operating notes

At a medium temperature of -10...2°C, stem heating or a valve neck extension is recommended. The permitted medium temperature may depend on the actuator type. A differential pressure of 200 kPa is specified to ensure quiet operation.

Permitted mounting position: from vertical to horizontal relative to the axis; installation with the stem pointing downwards is not permitted. Observe the flow direction indicated by the arrow on the body.