• Poly body with brass threads
  • Available in cold (MJ20) and hot (MJ420) versions
  • Pulse output (1/10 gal)
  • Sealed register for tamper resistance
  • Meets AWWA C708 performance
  • NSF 61/g listed and marked
  • Quiet operation
  • 1-year new meter accuracy warranty
  • 5-year standard warranty for body, register, and accuracy (AWWA C708)


  Operating capacity 20 gpm  
  Max rate for continuous duty 15 gpm  
  Max pressure loss at max flow 10.9 psi  
  Normal flow range (+/- 1.5%) 1 – 20 gpm  
  Minimum flow (+/- 3%) ¼ gpm  
  Max working pressure 150 psi  
  Max working temperature (Cold; MJ20)  105° F  
  Max working temperature (Hot; MJ420) 194° F  
  Meter casing spuds, nominal thread size 1”  
  Nominal pipe size  ¾”  
  Weight 0.9 lbs  
  Materials (main case) Glass-reinforced Nylon  


Designed to be used in submetering applications suitable when compact size and pulse output are preferred.

The MTW MJ20/MJ420 multi-jet water meter uses a polymer body design for low weight and reduced cost and add brass threads to reduce the possibility of stripped threads. Because the brass threads do not come into contact with the water the MJ20/MJ420 meets NSF61 standards plus the Annex G 0.25% lead requirement which is also known as NSF372.  The MTW MJ20/MJ420 may be installed horizontally or vertically. The MJ420 is for hot water applications.