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Flow Meter
Selection Guide

All
Flow Meters
Digital
Flow Meters
Mechanical
Flow Meters
Group of Flow Meters

About Flow Meters

Flow meters come in many shapes and sizes and operate in many different ways. At Assured Automation, we carry a comprehensive collection of meters to satisfy the majority of applications that our valve customers use. From simple multi-jet residential water submeters to high-pressure industrial digital flow meters we offer meters in a range of materials, connection types, and sizes. Use the chart below to select the flow meter that best fits your application, then click the row to see more details. If you need help selecting a flow meter give us a call at 1-800-899-0553 and an expert will be glad help you.

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
Digital Meters
01A Aluminum NPT
1"
Digital
Totalizer Only with Reset
3 to 30 gpm
01N Nylon NPT
1"
Digital
Totalizer Only with Reset
3 to 30 gpm
DM-P Plastic (Pa66 + GF/PPS) NPT (male)
1/4" to 1"
Digital
Rate, Total, & Total w/ Reset
1.32 to 105 gph
0.35 to 365 gpm
A1 Nylon or Aluminum NPT
1" & 2"
Digital
Rate, Total, & Total w/ Reset
0.3 to 3 gpm
30 to 300 gpm
G2 316 SS, Brass, or PVDF NPT, T-clamp, Flanged
1/2" to 2 1/2"
Digital
Rate, Total, & Total w/ Reset
1 to 10 gpm
20 to 200 gpm
TM PVC NPT, Spigot, Flanged
1/2" to 4"
Digital
Rate, Total, & Total w/ Reset
1 to 10 gpm
20 to 200 gpm
WM-PT PVC PVC Pipe, Pipe Saddle
1/2" to 8"
Digital
Rate, Total, & Total w/ Reset
1 to 10 gpm
20 to 200 gpm
LM Aluminum NPT
1/2"
Digital
Total & Total w/ Reset
0.26 to 8 gpm
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
BUY
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

INFO
BUY
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

INFO
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

INFO
BUY
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)

INFO
BUY
01A Series
Economy Fuel Meter
Functionality
  • Totalizer only with reset
Key Features
  • Flow Range: 3-30 GPM
  • Rugged Construction
  • Designed for Outdoor Use
  • Digital Display
  • Large 1/2" Tall Digits
  • Maximum Batch Total 9,999
  • Approximate Battery Life is 9,000 hrs
  • Meter Made in America
Specifications
Materials:
  • Aluminum Housing
  • Nylon Turbine & Supports
  • 316SS Rings
  • Tungsten Carbide Shafts
  • Ceramic Bearings
End Connections
  • NPT Threaded (1" female)
Temperature Range:
  • 130°F
Maximum Pressure:
  • 300psi
Accuracy:
  • +/- 2.5% (typical... can vary up to 5%)

INFO
BUY
01N Series
Economy Water Meter
Functionality
  • Totalizer only with reset
Key Features
  • Flow Range: 3-30 GPM
  • Rugged Construction
  • Designed for Indoor/Outdoor Use
  • Digital Display
  • Large 1/2" Tall Digits
  • Maximum Batch Total 9,999
  • Approximate Battery Life is 9,000 hrs
  • Meter Made in America
Specifications
Materials
  • Nylon Housing
  • Nylon Turbine & Supports
  • 316SS Rings
  • Tungsten Carbide Shafts
  • Ceramic Bearings
End Connections
  • NPT Threaded (1" female)
  • Garden Hose Adaptors Available
Temperature Range:
  • 130°F
Maximum Pressure:
  • 150psi
Accuracy:
  • +/- 2.5% (typical... can vary up to 5%)

INFO
BUY
DM-P Series
Multi-purpose Plastic Digital Flow Meter
Functionality
  • Rate, Total, & Resettable Total
Key Features
  • Flow Range: 1.32 GPH to 365 GPM
  • Perfect for use on garden hoses
  • Designed for Indoor/Outdoor Use
  • Digital Display
  • Large 1/2" Tall Digits
Specifications
Flow Ranges
  • 1/4": 1.32 to 105 gph
  • 1/2": 2.6 to 395 gph
  • 3/4": 0.22 to 22 gpm
  • 1": 0.35 to 35 gpm
Materials
  • Plastic (Pa66 + GF/PPS) Housing
  • Pa66 / POM / PPS Rotor
  • Hardened 316 SS Shafts
  • SS 440 / Carbide / Ceramic Bearings
End Connections
  • NPT Threaded (1/4" to 1" male)
  • Garden Hose Adaptors Available
Temperature Range:
  • -40 to 176°F
Maximum Pressure:
  • 145psi
Accuracy:
  • +/- 1% Full Scale

INFO
BUY
A1 Series
Commercial Flow Meter
Functionality
  • Current flow rate
  • Non-resettable totalizer
  • Totalizer with reset (batch total)
Key Features
  • Flow Ranges: 0.3-300 GPM
    (depending on size)
  • Display Gallons, Liters, or User Defined Units
  • Rugged Construction
  • Designed for Indoor/Outdoor Use
  • Digital Display
  • Large 1/2" Tall Digits
  • Maximum Batch Total 999,999
  • Approximate Battery Life is 4,000 hrs
  • Displays instantaneous flow rate & flow totals
  • Ability to Field Calibrate (standard)
  • Meter Made in the USA
Specifications
Flow Ranges
  • 0.3 to 3gpm
  • 3 to 50gpm
  • 30 to 300gpm
Materials
  • Nylon or Aluminum Housing
  • Nylon Turbine & Supports
  • 316SS Rings
  • Tungsten Carbide Shafts
  • Ceramic Bearings
End Connections
  • 1" NPT Female Threaded (nylon & aluminum)
  • 2" NPT Female Threaded (aluminum only)
Maximum Temperature:
  • 130°F
Maximum Pressure:
  • 150psi (nylon)
  • 300psi (aluminum)
Accuracy:
  • +/- 1.5%

INFO
BUY
G2 Series
Industrial Flow Meter
Functionality
  • Current flow rate
  • Non-resettable totalizer
  • Totalizer with reset (batch total)
Key Features
  • Flow Ranges: 1-200 GPM
    (depending on size - see specifications)
  • Rugged Construction
  • Designed for Indoor/Outdoor Use
  • Digital Display
  • Large 1/2" Tall Digits
  • Maximum Batch Total 999,999
  • Approximate Battery Life is 4,000 hrs
  • Displays instantaneous flow rate & flow totals
  • Ability to Field Calibrate (standard)
  • Meter Made in America
Specifications
Flow Ranges
  • 1/2": 1-10 gpm (3.8-37.9 l/min.)
  • 3/4": 2-20 gpm (7.6-75.7 l/min.)
  • 1": 5-50 gpm (18.9-190 l/min.)
  • 1½": 10-100 gpm (39-380 l/min.)
  • 2": 20-200 gpm (76-760 l/min.)
Materials
  • 316SS, Brass, or PVDF Housing
  • PVDF Rotor
  • 316SS Rings
  • Tungsten Carbide Shafts
  • Ceramic Bearings
  • Ferrite Signal Generator
End Connections
  • 1/2" to 2" NPT
  • 3/4" to 2 1/2" Tri-Clamp
  • 1" to 2" 150# Flanged
Maximum Temperature:
  • 140°F
Maximum Pressure:
  • 1500psi (aluminum)
Accuracy:
  • +/- 1, 1.5, or 2% (depending on size)

INFO
BUY
TM Series
PVC Light Duty Flow Meter
Functionality
  • Current flow rate
  • Non-resettable totalizer
  • Totalizer with reset (batch total)
Key Features
  • Flow Ranges: 1-600 GPM (depending on size)
  • Rugged Construction
  • Designed for Indoor/Outdoor Use
  • Digital Display - Large 1/2" Tall Digits
  • Maximum Batch Total 999,999
  • Approximate Battery Life is 5,000 hrs
  • Displays instantaneous flow rate & flow totals
  • Ability to Field Calibrate (standard)
  • Meter Made in the USA
Specifications
Flow Ranges
  • 1/2": 1-10 gpm (3.8-37.9 l/min.)
  • 3/4": 2-20 gpm (7.6-75.7 l/min.)
  • 1": 5-5- gpm (18.9-190 l/min.)
  • 1½": 10-100 gpm (39-380 l/min.)
  • 2": 20-200 gpm (76-760 l/min.)
Materials
  • PVC Housing
  • PVDF Rotor
  • 316SS Rings
  • Tungsten Carbide Shafts
  • Ceramic Bearings
  • Ferrite Signal Generator
End Connections
  • 1/2" to 4" NPT
  • 1/2" to 4" Spigot (Pipe - female)
  • 3" & 4" RF 150# ANSI Flanged
Maximum Temperature:
  • 140°F
Maximum Pressure: (at 73°F)
  • 150psi (up to 2")
  • 225psi (3" & 4")
Accuracy:
  • +/- 3%

INFO
BUY
WM-PT Series
Paddle Wheel Flow Meter
Functionality
  • Current flow rate
  • Non-resettable totalizer
  • Totalizer with reset (batch total)
Key Features
  • Flow Ranges: 1-3200 GPM (depending on size)
  • Rugged Construction
  • Designed for Indoor/Outdoor Use
  • Digital Display - Large 1/2" Tall Digits
  • Maximum Batch Total 999,999
  • Approximate Battery Life is 5,000 hrs
  • Displays instantaneous flow rate & flow totals
  • Ability to Field Calibrate (standard)
  • Meter Made in the USA
Specifications
Flow Ranges
  • 1/2": 0.6 to 15 gpm
  • 3/4": 1.5 to 30
  • 1": 5 to 55
  • 1 1/2": 10 to 125
  • 2": 15 to 200
  • 3": 40 to 450
  • 4": 60 to 800
  • 6": 120 to 1800
  • 8": 250 to 3200
Materials
  • PVC Paddle Wheel
  • PVC Pipe or saddle
  • 316SS Paddle pin
  • Buna-N o-ring seal
  • ABS electronics housing
End Connections
  • 1/2" to 4" Pipe Mounted (schedule 40 or 80)
  • 1 1/2" to 8" Insertion Mount
Maximum Temperature:
  • 20 to 120°F
Maximum Pressure: (at 73°F)
  • 200psi (up to 2")
  • 225psi (3" & 4")
Accuracy:
  • +/- 1.5%

INFO
BUY
LM Series
Lube Oil Meter
Functionality
  • Non-resettable totalizer
  • Totalizer with reset (batch total)
Key Features
  • Digital display with large 1/2" tall digits
  • Two buttons
  • Powered by one CR123A 3 volt lithium battery
  • Measurments: Resettable Total, Non-reset Total
  • Units of Measure: Gallons, Liters, Pints, Quarts (user selectable)
Specifications
Flow Range
  • 0.26 - 8 gpm
Materials
  • Housing: Aluminum
  • Wetted Parts: Acetal, Aluminum, Nitril, Steel
End Connections
  • 1/2" NPT
Temperature Range:
  • 23°F to 131°F
Maximum Pressure: (at 73°F)
  • 1500psi (103.5 bar)
Accuracy:
  • +/- 0.5%

INFO
BUY
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