DWYER Series RMV Rate-Master® Dial-Type Flowmeters

RM 0.00



Series RMV Rate-Master® Dial-Type Flowmeters

Brass Body, Three Ranges to 20 GPM Water, Shatterproof Construction

The Series RMV Rate-Master® Flowmeters measure higher water flow rates with ±2% of full scale accuracy at an affordable price. Stocked models are fitted with 1″ female NPT inlet and outlet; 3/4″ and 1/2″ sizes are also available. Install in line, supported by piping or flush panel mount with complete hardware package included.


Product Applications

  • Monitor coolant flow through ingot heaters, high-amp switchgear, resistance welders, heat exchangers, compressors, scrubbers.
  • Monitor water consumption to different processes and operations for more efficient operation.
  • Calculate required fill or drain times for tanks, water towers.



  • Rugged forged brass housing yields great compatibility and strength, allowing the unit to withstand system pressures to 1000 psig (68.9 bar)
  • Shatter proof construction, unlike glass tube variable area flowmeters, yields long operation life



  • Service: Compatible liquids.
  • Wetted Materials: Brass, copper, 302 SS, sintered barium ferrite.
  • Temperature Limits: 20 to 200°F (-6.7 to 93°C).
  • Pressure Limits: 1000 psig (68.9 bar).
  • Pressure Drop: 0 to 5 GPM: 3.2 psid; 0 to 10 GPM: 5.3 psid; 0 to 20 GPM: 10.4 psid.
  • Accuracy: ±2% of FS.
  • Size: Diameter dial face 4″ (101.6 mm).
  • Process Connections: See model chart on catalog page.
  • Maximum Flow: 1.5 x FS reading.
  • Weight: 9 lb (4.08 kg).


Models & Ordering

Model Description
RMV-1-3 Dial type flowmeter, 0-5 GPM water, 1″ female NPT.
RMV-2-3 Dial type flowmeter, 0-10 GPM water, 1″ female NPT.
RMV-3-3 Dial type flowmeter, 0-20 GPM water, 1″ female NPT.




Additional information


RMV-1-3, RMV-2-3, RMV-3-3