The KOBOLD DRB paddle-wheel flow meter can measure the flow of liquids in pipes up to 3 inches in diameter with pressures up to 232 PSIG. It uses a PVDF paddle that’s designed to slightly protrude into the flow stream, enabling the flow meter to measure fluids with some small solids content, as well as dirty liquids, with a much lower risk of failure. The paddle, supported on a ceramic bearing system, is durable, has an extended life span and provides excellent chemical resistance. The DRB is available with stainless steel threaded bodies. A Hall-effect sensor detects the passing of permanent magnets embedded in the paddle-wheel blades. The sensor’s output is then transformed to a linear pulse frequency output or 4-20 mA signal. Optional displays and controllers are available to provide analog outputs, local flow rate indication, and programmable setpoint switches.

Flow Direction Specification May Be Required

**Important: This flow meter (model dependent) may require flow direction specification to complete your order.

While our product number identifies the meter's core specifications, flow direction is a critical parameter for certain models that must be specified separately to ensure proper performance and installation.

Why Flow Direction Matters

Flow meters are precision instruments engineered with internal components optimized for fluid movement in a specific direction, for certain models. Installing a meter that requires flow direction with an incorrect flow direction will not allow it to function properly.

What We Need From You

Please read the datasheet order table carefully (including any asterisks) and if your model requires a flow direction please specify your desired flow direction, in addition to your part number, when placing your order.

Flow directions are option/model-dependent but may include the following choices:

Top to Bottom
Bottom to Top
Left to Right
Right to Left

We cannot process orders without the required flow direction specification, if it is needed. Orders submitted that are missing this information are likely to experience delays in processing.

If you're unsure of your flow direction, our technical team is ready to assist you in determining the correct specification based on your system requirements at 412-788-2830 or customerservice@koboldusa.com.

Important Notice: Transitioning to U.S. Manufacturing

Due to the ongoing implementation of EU Directive 2020/2184 that restricts brass materials, product availability is subject to change at any time. We are actively reshoring production of our brass flowmeter models to U.S. facilities to ensure continued supply. Not all products can/will be reshored. During this transition, stock availability may fluctuate between the time of quotation and purchase order placement. We appreciate your patience as we work to establish our domestic supply chain and remain committed to providing you with the same high-quality products made closer to home.