The KOBOLD REG flow restrictors maintain constant quantities of liquids in pipework systems. The REG rate regulators are ideally suited for the simple restriction to a preset value of throughputs of water, or of liquids similar to water. The flow restrictors ensure equilibrium, particularly in systems with many users and resulting pressure fluctuations caused by random flow conditions. This ensures that the desired throughput is not exceeded. Constant flow is achieved by two stainless steel diaphragms that are cross-mounted and riveted together.

The gap between the spring-loaded stainless steel plate and seal face is continuously varied as the differential pressure changes. As the differential pressure decreases the gap widens, and it closes as the pressure increases, thus maintaining a constant flow volume through the device.

Optimized water distribution is one example of application possibilities for REG, and specifically the regulated supply of fresh water to remote settlements. Initially, core settlements consume too much water, so that bottlenecks can occur at the remote end of the pipeline. Direct installation of REG completely eliminates the problem.  The REG system offers advantages such as, tamper-proof application, maintenance-free for life, and and it’s a low-cost unit, requiring no auxiliary power.

Pump Protection is another ideal application of REG, wherever a constant flow rate is needed despite pressure fluctuations, for example, switching on or off water consumers. In cooling circuits REG offers lifelong protection against overheating at idle, water hammering and cavitation.

Industrial areas are another area in which REG finds good application, as virtually every industry needs water at its inlet and outlet points.  REG’s high-quality stainless steel design is completely maintenance free, and independent from auxiliary power and totally tampering-proof, making it optimally suitable for most diverse of industrial requirements, such as district heating systems, cooling circuits, filtration processes, spray moisture application, dosing applications, agricultural irrigation, fire fighting and fire protection services, emergency shower systems (hazardous areas), water treatment.

Technical specifications

  • Pressure Max. 200 bar; Temperature Max +300 °C
  • Connections: screw thread G1/2, G3/4, G11/2, G2, G21/4, G21/2 and  3/4”NPT


  • Energy saving – No auxiliary power required
  • Compact design – easy to fit/assemble
  • Durable and reliable – No wearing parts


Tel. +27 10 595 1831

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