Woltmann Turbine water flow meters. IN STOCK

Water Flow Meter 50-500mm

  • Long Operational Life Resulting from low rpm turbine and superior construction materials
  • Quick 2-Day Delivery
  • Hydraulic Performance Performance conforms to Class B of EEC Standards
Product Options


A full bore, helix Woltmann type water flow meter suitable for cold water with interchangeable mechanism-dry dial. The impeller which is of modern design, rotates on stainless spindles mounted in the measuring chamber.

The impeller is made of self-cleaning synthetic resin. The helix aligns with the pipe axis. The complete metering unit is easily removable from the meter body and is designed to ensure high flow-rate with the minimum headloss.

The gears and the totaliser operate under vacuum in a dry compartment, only the helix is submerged in the water. The transition is achieved through a corrosion-proof permanent magnetic drive which is protected by the cast iron meter body from from external magnetic forces.

Versions available for both cold (30°C) or hot (90°C) water complete with pulse output.


  • The straight reading register operates in a dry compartment, which is under vacuum conditions. As a result the register always remains perfectly clear. Easy reading in any working conditions are ensured.
  • Long operational life thanks to low rpm turbine and superior construction materials.
  • A suitable shield protects the magnetic drive against any interferences from external fields.
  • The hydraulic performance conforms to Class B of EEC standards.
  • Meter is supplied complete with couplings and may be installed in the horizontal or vertical position

Manufactured by: Delta Flowtech
Model: Water Flow Meter 50-500mm

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Measuring total volume of potable water through pipes



Yes, the ordering process is very easy. Orders can be made via purchase order or by credit/debit card. Once we have the paperwork we can delivery next day to any location in Europe. Provided with the equipment is a quick start guide, and if you need extra support, the technical support engineers can be contacted via phone call.
Every flow meter is tested upon shipping and return as part of our ISO9001 procedure. Also, as part of this procedure, the flow meter is calibrated once a year. If a copy of the calibration certificate is needed let us know.
We are here to help. If the self-help and quick start guides do not help, then call one of our technical support engineers on +44 (0) 1527 882060. We have supplied and supported many clamp on rental installations throughout Europe.
If the stock is permitting, and all paperwork is received by 12pm then flow meters can usually be available the next day.
Without exception, all our flow meters are tested. If you need a 110v plug instead of the standard 230v plug let us know.
As long as the pipe is relatively clean, coatings or paint is usually not a problem for clamp on flow meters but if the pipe is corroded or the paintwork has bubbled then a quick sanding down with sandpaper or a wire brush is recommended.
An ultrasonic wall thickness gauge, that measures to within 0.05mm, is provided as standard with all flow meter rental packages.
The screendump facility on the integrated dataloggers on all our flow meters, allows you to photograph any screen and download it to your pc.