Dwyer WMH Multi-Jet Hot Water Meter
Dwyer WMH Multi-Jet Hot Water Meter

Dwyer WMH Multi-Jet Hot Water Meter

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Dwyer WMH Multi-Jet High-Temperature Water Meters are a series of mechanical, water totalizing meters that display the total water usage in gallons with m3 options. They are available in a range of body sizes and include NPT or BSPT optional couplings. The high-temperature resistant brass body is compatible in applications with high temperature water no suitable with standard brass water meters and maintains its accuracy.

Dwyer WMH Multi-Jet Features

  • High temperature threshold of 190°F (88°C) ideal for high temperature applications
  • Multi-jet design allows for simplicity and accuracy with wide flow ranges, even in low flow applications
  • Magnetically driven, hermetically sealed register does not leak or fog and is completely separated from the water
  • Designed for long service life and maintenance-free operation
  • Integral strainer that protects meter from particulate damage
  • Easy installation with included coupling adapters
  • Pulsed output proportional to flow allows for remote flow totalization


  • HVAC applications
  • Measuring total condenser water flow in residential, commercial and industrial applications
  • Remote hot water monitoring
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Dwyer WMH Multi-Jet Specification

Service Water.
Wetted Materials Body: Brass; Couplings: Brass; Measuring Chamber: Brass.
Flow Range See model chart on catalog page.
Accuracy WMH-A-X-XX: Transitional Flow: ±3%; Nominal Flow: ±1.5%.
Temperature Limit 190°F (88°C).
Pressure Limit 150 psi (10 bar).
Totalizing Display Maximum See model chart on catalog page.
Output Signal Pulse output with frequency proportional to flow rate.
Pulse Options 0.1 gal, 1 gal, 10 gal, 100 gal per pulse (1 L, 10 L, 100 L, 1000 per pulse) See model chart on catalog page. (Consult factory for m3, BSPT units or additional pulse output options)
Electrical Rating 0.01A @ 24VAC/DC.
Electrical Connections Color-coded lead wires, 4.5′ (1.5 m) long.
Mounting Orientation Horizontal with register facing up.
Weight See dimension chart.

Ref: dwyer-inst.com

Download Data Sheet: Series WMH Multi-Jet Hot Water Meter

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