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Mechanical Flow Meter
Selection Guide

All
Flow Meters
Digital
Flow Meters
Mechanical
Flow Meters
Series Body Material Conn. Type /
Size Range
Technology /
Function
Flow Ranges
smallest / largest
Mechanical Meters
WM-PC Plastic NPT
1/2" to 1 1/2"
Mechanical
Totalizer Only
1 to 15 gpm
8 to 120 gpm
WM-NLC
Lead Free Brass (NSF cert.)
NPT
1/2" to 2"
Mechanical
Totalizer Only
1 to 15 gpm
8 to 120 gpm
WM-NLCH
Lead Free Brass
NPT
1/2" to 2"
Mechanical
Totalizer Only
1 to 15 gpm
8 to 120 gpm
WM-NLD
Lead Free Brass NPT (1/2" to 1")
2-bolt Flange (1 1/2" to 2")
Mechanical
Totalizer Only
1 to 20 gpm
8 to 160 gpm
WM Epoxy Coated Bronze NPT
1/2" to 2"
Mechanical
Totalizer Only
1 to 15 gpm
8 to 120 gpm
WM-PD Glass Reinforced Polyamide NPT
1/2" & 3/4"
Mechanical
Totalizer Only
6.6 to 60 gph
10.6 to 1056 gph
WM-PC Series
Plastic Residential Flow Meter
Functionality
  • Non-resettable Totalizer
Key Features
  • Proven multi-jet flow meter design
  • NPT (true-union) adapters included
  • Hermetically sealed dry dial
  • Easy to read dial with large digits
  • Magnetic drive eliminates leak point
  • Low-flow indicator
  • Removable and cleanable strainer at inlet
  • Integral strainer protects meter internals
  • Pulse output switch available
Specifications
Sizes & Connections
  • Non-tapered meter threading (5/8" to 2")
  • NPT adapters included (1/2" to 1 1/2")
Flow Ranges
  • 1 to 15 gpm w/20 max. (smallest)
  • 8 to 120 gpm w/160 max. (largest)
Materials
  • Body: Plastic
  • NPT Adapters: Plastic
Temperature and Pressure
  • Max. Temp: 105°F
  • Max. Pressure: 150 PSIG
Accuracy
  • +/- 1.5%F

INFO
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WM-NLC Series
Lead Free Brass Residential Water Meter / Submeter
Functionality
  • Non-resettable Totalizer
Key Features
  • Proven multi-jet flow meter design
  • NPT (true-union) adapters included
  • Hermetically sealed dry dial
  • Easy to read dial with large digits
  • Magnetic drive eliminates leak point
  • Low-flow indicator
  • Removable and cleanable strainer at inlet
  • Integral strainer protects meter internals
  • Pulse output switch available
Specifications
Sizes & Connections
  • Non-tapered meter threading (5/8" to 2")
  • NPT adapters included (1/2" to 2")
Flow Ranges
  • 1 to 15 gpm w/20 max. (smallest)
  • 8 to 120 gpm w/160 max. (largest)
Materials
  • Body: Lead Free EcoBrass
  • NPT Adapters: Lead Free Brass
  • Internals: Engineered Thermoplastic
  • Magnet: Alnico
Temperature and Pressure
  • Max. Temp: 122°F
  • Max. Pressure: 150 PSIG
Accuracy
  • +/- 1.5%F

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WM-NLCH Series
Lead Free Brass Residential Hot Water Meter / Submeter
Functionality
  • Non-resettable Totalizer
Key Features
  • Meters water up to 194°F
  • Proven multi-jet flow meter design
  • NPT (true-union) adapters included
  • Hermetically sealed dry dial
  • Easy to read dial with large digits
  • Magnetic drive eliminates leak point
  • Low-flow indicator
  • Removable and cleanable strainer at inlet
  • Integral strainer protects meter internals
  • Pulse output switch available
Specifications
Sizes & Connections
  • Non-tapered meter threading (5/8" to 2")
  • NPT adapters included (1/2" to 2")
Flow Ranges
  • 1 to 15 gpm w/20 max. (smallest)
  • 8 to 120 gpm w/160 max. (largest)
Materials
  • Body: Lead Free EcoBrass
  • NPT Adapters: Lead Free Brass
  • Internals: Engineered Thermoplastic
  • Magnet: Alnico
Temperature and Pressure
  • Max. Temp: 194°F
  • Max. Pressure: 150 PSIG
Accuracy
  • +/- 1.5%F

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BUY
WM-NLD Series
Lead Free Brass Positive Displacement Water Meter
Functionality
  • Non-resettable Totalizer
Key Features
  • Meter body made of lead free brass
  • Easy to read "odometer" style register, with full-face dial and smaller inset dial for finer increments
  • Low starting flow rate and high accuracy
  • Accurately meters in any orientation
  • Triangular spinner for low-flow and leakage indication
  • Register can be removed for replacement or repair WITHOUT removing meter from the line
  • Heat treated glass lens protects register and dials from damage, dirt, and moisture
  • Hinged protective cover opens more than 180˚for ease of viewing register
  • Magnetic drive offers very low transmission resistance
  • Pulse output cable produces 1 pulse per gallon for easy addition of digital counter or use with PLC or HMI
Specifications
Sizes & Connections
  • Non-tapered meter threading with NPT adapters (1/2" to 1")
  • 2-bolt flat-faced flanges (1 1/2" to 2")
Flow Ranges
  • 1 to 20 gpm (smallest)
  • 8 to 160 gpm (largest)
Materials
  • Body: Lead Free Brass
  • Lens: Tempered glass
Temperature and Pressure
  • Max. Temp: 122°F
  • Max. Pressure: 150 PSIG
Accuracy (in ANY orientation)
  • +/- 1.5%F

INFO
BUY
WM Series
Residential Water Meter / Submeter
Functionality
  • Non-resettable Totalizer
Key Features
  • Proven multi-jet flow meter design
  • NPT (true-union) adapters included
  • Hermetically sealed dry dial
  • Frost resistant forged body
  • Easy to read dial with large digits
  • Magnetic drive eliminates leak point
  • Low-flow indicator
  • Integral strainer protects meter internals
  • Pulse output switch available
  • Flow meter made in America
Specifications
Sizes & Connections
  • Non-tapered meter threading (5/8" to 2")
  • NPT adapters included (1/2" to 2")
Flow Ranges
  • 1 to 15 gpm w/20 max. (smallest)
  • 8 to 120 gpm w/160 max. (largest)
Materials
  • Body: Epoxy coated bronze
  • NPT Adapters: Brass
Temperature and Pressure
  • Max. Temp: 100°F
  • Max. Pressure: 150 PSIG
Accuracy
  • +/- 1.5%F

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WM-PD Series
Low Flow Water Meter
Functionality
  • Non-resettable Totalizer
Key Features
  • Flow Ranges: 4.3-1320 GPH
  • Body and internals constructed of high quality materials
  • Glass reinforced body is extremely durable
  • Liquid filled register prevents condensation and provides clear visibility in all atmospheric conditions
  • All models are equipped for addition of pulse output
  • Suitable for use on hot water (up to 122°F)
  • Mechanical operation is unaffected by magnetic fields
  • Built in check valve prevents reverse flow
  • Measures accurately in any orientation
  • Pulse Output optional
  • Tamper evident wire & seal
Specifications
Flow Ranges
  • 6.6 - 660 GPH up to 10.6 - 1056 GPH
Maximum Reading
  • 9,999,999.99 (050 - 100)
  • 9,999,999.9 (150 & 200)
Materials
  • Housing: glass reinforced polyamide
  • Internals: graphite lubricated polystyrene, stainless steel
  • Liquid Surrounding Register: diluted Ethylene Glycol
  • Internal Seals: NBR (Nitrile Butadine Rubber)
  • Fitting to Body Seals: EPDM
End Connections
  • 1/2" or 3/4" male NPT (true-union)
Maximum Temperature:
  • 122°F
Maximum Pressure:
  • 150psi
Accuracy:
  • +/- 2% (normal flow range)
  • +/- 5% (min. to low end of normal)
Pulse Output: (optional)
  • 20 pulses per gallon (0.05 gallons per pulse)

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