Pulsed Water Meters

Screwed Pulsed Water Meters

Pulsed Water Meters

Watersavers offers a range of multi-jet-based water meters used for monitoring and measuring water usage. The meters are available in sizes from 1/2″ BSP to 4″ BSP (15mm to 100mm) these pulsed water meters feature clear, easily read displays, free from condensation. Larger sizes are available on request.

Choosing Pulsed Water Meters

For general cold-water applications, the size of water meter is usually determined by the gauge of pipe into which the meter will be fixed.

Please note that larger water meters have a large flowrate factor (in m³/h) and are less sensitive to low flow rates. If in doubt see the datasheet which provides technical information including flowrates, physical sizes and weights or call a Watersavers’ expert on 01603 720999 or email sales@watersavers.co.uk we’d be delighted to help.

WMP pulse water meters are fitted with a reed switch contact to provide one contact closure per fixed volume of water flowing through, whilst allowing the dial to be read. The contact output may be connected to a remote digital meter, leak detection panel or other electrical or electronic system.

Water Meter Monitoring Systems

Watersavers provides bespoke control panels for leak detection, flood prevention, alarm and other applications. Please call an expert on 01603 720999 or email sales@watersavers.co.uk

Pulsed Water Meters

Water meters are available with a pulsed output which can be used for remote monitoring making them suitable for installations applying for BREEAM Wat 02 and Wat 03.

Watersavers supplies a standard range of pulse water meters in sizes from 1/2” up to 4” BSP. These meters are WRAS approved and have a pulse output enabling water flow to be monitored, logged or controlled – especially for BREEAM credits.

These meters give a pulse output (usually from a magnetic reed switch) for a fixed volume of water flowing through them.  The K factor is the number of litres per pulse output. On smaller meters from 1/2” to 1 1/4” BSP, the factor is usually 1 litre per pulse. This increases to 10 litres per pulse and 100 litres per pulse for larger meters.

Our WLDS-10mk3 and WLDS-20 mk3 leak detection panels monitor pulses from pulse water meters and raise an alarm in the event of the water flow rate exceeding preset parameters.

Pulsed Water Meter Product Codes

Water Meter Product Codes Nominal Size Maximum Flow Rate Minimum Flow Rate Litres/Pulse Options Weight
Without Pulse Output With Pulse Output British Standard Pipe (BSP) m3/h l/h WMP models only kg
WM15 WMP15 ½” 3 30 1, 10, 100 2
WM20 WMP20 ¾” 5 50 1, 10, 100 2
WM25 WMP25 1” 7 70 1, 10, 100 2.8
WM30 WMP30 1¼” 12 120 1, 10, 100 2.8
WM40 WMP40 1½” 30 300 10, 100, 1k 4.65
WM50 WMP50 2” 50 500 10, 100, 1k 10.3


Larger sizes are available on request.


  • Suitable for installations applying for BREEAM Wat 02 & Wat 03 credits
  • Ideal for monitoring water usage and BMS applications
  • Only one moving part for minimum wear and maximum reliability – even in hard water areas
  • Visual indicator sensitive to the smallest flow – ideal for leak detection
  • Optional electrical ‘pulse’ output usually 1 per litre
  • Sealed display capsule – guaranteed against condensation

Order by 1pm for next day delivery

Price from £75.08 + VAT