The DFM All-Plastic Variable Area Flowmeter is a trusted choice across a wide range of industries throughout the UK, with thousands of units installed over the last two decades. Engineered for performance, this flowmeter offers exceptional chemical resistance, precision, and flexibility, making it ideal for monitoring the flow of liquids or gases.

Constructed from durable plastic materials—Polyamide, PVC, or Polysulphone—the DFM is built to handle demanding conditions. Available in sizes from 3/8” to 2½” and float lengths ranging from 165mm to 350mm, it delivers reliable measurements with ±2.5% full scale accuracy. Standard units feature rigid PVC end connections or BSP threads, while optional stainless steel inserts and cast iron end caps are available for higher temperatures or enhanced durability.

The DFM supports flow ranges tailored to specific applications, with standard L/hour H₂O scaling and the option for custom scales. It operates at pressures up to 10 bar (at 20°C) and temperatures up to 100°C, depending on tube material.

Installation is quick and straightforward, requiring vertical orientation for optimal accuracy. The unit also supports a range of control and monitoring enhancements, including up to three volt-free contact switches, a 4–20mA transmitter, and ATEX Exi Certification as standard.

With rapid delivery from stock, customisable features, and robust construction, the DFM All-Plastic Variable Area Flowmeter is the ideal solution for precise, adaptable, and dependable flow measurement.