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Economy Plastic Water Meter - WM-PC Series

  • WM-PC Economical Plastic Water Meter
  • WM-PC Economical Plastic Water Meter
  • WM-PC Economical Plastic Water Meter (shows included couplings)
  • WM-PC Series Water Meter with Pulse Output
  • WM-PC-075-CF Cubic Feet measurement (only in 3/4")
  • WM-PC Economical Plastic Water Meter
  • WM-PC Economical Plastic Water Meter
  • Sample: Meter connected to PVC pipe. PVC pipes typically use a PVC slip-fit to NPT threaded adapter
  • Sample: Meter connected to copper pipe.  Copper pipes typically use a copper sweat (solder) to female NPT threaded adapter
  • Sample: Meter connected to steel pipe.  Steel pipes typically use a steel Female NPT to Female NPT threaded coupling 
(requires that the pipe is NPT threaded)
  • Face of WM-PC-100 (1")
All Sizes in Stock!
Calculated at checkout

Product Description


reading-dials.pngThe WM-PC Series economy plastic water meter is excellent for residential water metering.  It uses the multi-jet principle to measure flow totals.  The gear train drives the register totalizer dials.  In addition, a pulse 
output is an option when you want to send the data to a remote location.  The 1/2", 3/4" and 1" meters come set with 1 Pulse/Gallon (3/4" Cubic Feet set for 1 pulse/cubic ft) and the 1 1/2" meters come set with 1 Pulse/10 Gallons.  This water meter is BPA free and NOW ARE NSF 61 CERTIFIED to meet lead free regulations.  They are also designed to meet the AWWA C708 Standards. 

These meters are frequently used as a low cost solution for residential water measuring. This product is the rare example of when inexpensive doesn't equal "cheap"!  It's one of the least expensive water meters on the market and ideal applications would be using the WM-PC as a Sewer Deduct Meter or Summer Meter to monitor water that is used outdoors and never passes through to the sewer system.  Many municipalities will allow home owners to deduct their outdoor water use from their sewer bill.

All meters come with plastic fittings. 

*NOTE - Bulk discounts for basic meter only. Not applicable to add-on items like garden hose adapters

 lit-icon.png Download Datasheet for Details & Specifications

manual-icon.png Download Manual for Installation & Maintenance


Model No. Size Flow Rate (GPM) Normal Flow (GPM)
High Continuous Low
WM-PC-050 5/8" X 1/2" 20 10 0.25 1-20
WM-PC-075 5/8" X 3/4" 20 10 0.25 1-20
WM-PC-100 1" 50 25 0.75 3-50
WM-PC-150 1 1/2" 100 50 1.5 5-100


WM-PC Materials & Specifications
Temperature 105⁰ F (40⁰ C) max
Pressure 150 PSI operating max
Materials Body/Couplings FRP (fiber reinforced polymer)
Internals Engineered Thermoplastic
Magnet Alnico
Accuracy +/- 1.5% within normal flow rate
Sensor Reed Switch
Maximum Current 20 mA
Maximum Voltage 24 Vdc or Vac
Cable Length 4.5' (1.35m) std (2000' max run)


  Installation Notes: 

Once the adapter ends are installed on the upstream and downstream pipes, the meter is installed by tightening the collar nuts onto the inlet and outlet of the meter. These "true-union" fittings then allow the meter to be easily rotated to the proper orientation (face up), or removed for cleaning, repair, or replacement.

These meter threads look practically identical to the NPT adapter threads BUT THEY ARE NOT!
Trying to install the meter without the adapter will damage the pipe's threads, the meter's threads, or BOTH!



Other Details

Installation Configuration:
Horizontal Only
Lead Free Status::
NSF Certified Lead Free
Sizes Offered:
1/2", 3/4", 1", 1 1/2"
Typical Shipping Time:
Usually same day or next day
Measurement Units:
Gallons (Cubic Feet in 3/4" only)
+/- 1.5% of reading
Temperature Max:
105 Degrees F (40 Degrees C)
150 PSI Operating
Materials: Body:
FRP-Reinforced Polyamide
Pulse Output:
Optional (Can be installed in-field)
Engineered Thermoplastic
Reed Switch or Totalizer Only
Reed Switch Max Current:
20 mA
Reed Switch Max Voltage:
24 Vdc or Vac
Cable Length:
12' (4m) std 2000' max run

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Product Reviews

Showing reviews 1-10 of 21 | Next

  1. No issues 5 Star Review

    Posted by on 27th Oct 2017

    I've purchased a few of these to hook up with ice machines for filter changing. I also got a cheap digital counter to hook the meter to for number of gallons. Everything has been working good so far.

  2. Good economy meter 4 Star Review

    Posted by on 25th Jul 2017

    Meter is well built & seems to function correctly. Either the instructions on how to read it are labeled incorrectly or the metering display & dials are from the 1/2"-3/4" meter. Was shipped promptly & delivered on time. Great service.
    Thanks for the feedback! Yes, the manual you have is incorrect. The meter face changed for the 1" when we got it NSF certified. The 1" now reads like the 1/2" and 3/4" meters. The manual is changed on the site. Here's the link: http://www.flows.com/content/literature/Manuals/AA_User_Manual_WM-PC.pdf
    We'll make sure the correct manuals are shipped in the future. Thanks again!

  3. Does the job 5 Star Review

    Posted by on 19th Jul 2017

    These are excellent units for the price. They come with adaptors to reduce the 1" fittings to 3/4". Dial is easy to read

  4. residential water meterworks great 5 Star Review

    Posted by on 27th Jun 2017

    What a quality piece of equipment I just installed into my home well water system. Having a MANUAL water softener, I've been guessing as to when to recharge (36,000 grain). Now, by knowing the water's hardness (17 gr/gal) and how many gallons are being use (NEW METER) I will know exactly when to recharge with out being too early or late.

  5. It has been working as expected for almost a year now 5 Star Review

    Posted by on 21st Apr 2017

    I have been using it to control de water consumption at home, using the pulse sensor. I t has been installed for almost a year now without any problem. I hope it continues like this for some more years.

  6. Worked Perfect 5 Star Review

    Posted by on 18th Apr 2017

    Worked just as promised. Seemed accurate at variable rates. Very cost effective product.

  7. great meter for the price 4 Star Review

    Posted by on 25th Aug 2016

    We have installed these for 60 apartments
    and they do a good job of passing the water costs on to the tenants. They have also helped to identify some water leaks we were not aware of.

  8. I'm Very Impressed 5 Star Review

    Posted by on 26th Jul 2016

    Great product, super fast shipping, stellar customer service. I messed up the two adapter gaskets and CS agent Walter sent me two same day I called. I highly recommend Flows Inc.

  9. Eye opener! 5 Star Review

    Posted by on 28th Jun 2016

    Put this meter on a rental house that's on a well. MAN!!! did I get a surprise! Water consumption was astronomical! Leak under house and toilet float not set properly. Wish I had installed this Years ago!

  10. GREAT COMPANY! 4 Star Review

    Posted by on 21st Jun 2016

    We had an issue with our 1" meter. The response from FLOWS.COM was none expectantly Fast!! Their response time was excellent. Thank you for your service.

    You are definitely on our "A" list of suppliers.

    Thanks again for helping us out of a difficult situation.

Showing reviews 1-10 of 21 | Next