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R225P-070 - This product has now been Phased Out

On request

This product has now been phased out - Please contact us for the relevant replacement

R225P-070- 2-way Pressure-independent control ball valve

•    internal thread Rp 3/4", DN 20
•    Housing nickel-plated, hot-pressed brass
•    Leakage rate A-AB air bubble-tight EN 12266

More Information


  • Mode of operation The characterized control valve is operated by a rotary actuator. The actuator is controlled by a standard modulating or 3-point control system and move the ball of the valve – the throttling device – to the opening position dictated by the control signal. Open the ball valve counterclockwise and close it clockwise.

  • Flow characteristic Equal-percentage characteristic of the flow rate ensured by the integral characterizing disc.

  • Constant flow volume  With an effective pressure of 30 ... 350 kPa, the result is a constant flow rate volume thanks to the integrated pressure reduction valve. Regardless of the differential pressure over the valve, a valve authority of 1 is attained. Even in the part-load range, the flow rate remains constant with each opening position (angle of rotation) and ensures a steady control.

Manuals & Datasheets
Technical Information

•     Functional data Flow media Cold and hot water, water with max. 50% volume of glycol
•     Temperature of medium +5°C...+80°C (lower temperatures on request)
•     Rated pressure ps 1600 kPa
•     Effective pressure 30 ... 350 kPa
•     Closing pressure Δps 700 kPa
•     Allowed range max 2) 45 ... 100% of nom 1)
•     Flow characteristic Equal percentage characteristics (to VDI/VDE 2178)
•     Pressure stability At a differential pressure of 35 ... 350 kPa: ±10%, in the lower effective pressure range: ±15%
•     Rangeability Sv See «Type overview»
•     Leakage rate Tight, leakage class IV at 350 kPa (IEC 60534-4)
•     Pipe connector Internal thread acc. to ISO 7/1
•     Angle of rotation 90° (Operating range 15 ... 90°)
•     Installation position Upright to horizontal (in relation to the stem)
•     Maintenance Maintenance-free
•     Materials Fitting DN 15 ... DN 25: Forged fitting, nickel-plated brass body DN 32 ... DN 50: Cast, nickel-plated brass body
•     Valve cone and stem Chrome-plated brass
•     Stem seal EPDM O-ring
•     Ball seat PTFE, O-ring Viton
•     Characterizing disk DN 15 ... DN 20: Brass DN 25 ... DN 50: TEFZEL
•     Cage Brass
•     Diaphragm Polyester-reinforced silicone
•     Spring for valve cone Stainless steel
•     Dimensions / Weights see «Dimensions and weights», page 3
•     Motorizing see the complete overview of water solutions

Manufacturer Belimo