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Watflow

Watflow specializes in precision flowmeters and water meters for industrial, residential, and garden applications, offering reliable measurement solutions with certifications like ISO4064 and AWWA.

9 products Updated March 4, 2026

Watflow Products (9)

1
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Watflow DN15 Brass Vertical Water Meter, 1/2" NPT Couplings, AWWA Certified Cubic Meter Reading for Home Garden Apartment
Prime

Watflow DN15 Brass Vertical Water Meter, 1/2" NPT Couplings, AWWA Certified Cubic Meter Reading for Home Garden Apartment

Watflow
9.9
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Durable brass construction resists corrosion and wear
  • High accuracy meets AWWA standards for trustworthy readings
  • Easy-to-clean filter without breaking seals
  • Complete accessories simplify professional-grade installation
  • Certified for potable water applications

Cons

  • Measures in cubic meters, not gallons as some titles suggest
  • Requires vertical upward flow installation
  • Damaged by continuous flows over 10 GPM
2
Prime

Watflow DN20 Vertical Brass Water Meter with 3/4" NPT Couplings, Pulse Output, ISO4064 Certified for Home Garden Apartment

Watflow
9.9
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Corrosion-resistant brass body with high-quality steel bearings for durability
  • High accuracy and pulse output for reliable tracking
  • Easy 4-step installation with all accessories provided
  • Cleanable filter reduces upkeep costs
  • ISO4064 compliance ensures suitability for drinking water

Cons

  • Measures in cubic meters, not gallons, requiring conversion
  • Limited to 10 GPM continuous flow to avoid damage
  • Suitable only for clean cold water, not industrial or hot liquids
3
Prime

Watflow DN20 Stainless Steel Water Meter 3/4" NPT - Durable Cubic Flow Meter for Precise Water Monitoring

Watflow
9.9
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Premium stainless steel construction for superior durability
  • Quick and tool-free installation process
  • Full accessory package included
  • High accuracy in cubic meter measurements
  • Versatile 3/4" NPT threading

Cons

  • Measures in cubic meters only, requiring conversion for gallon-based systems
  • Must be installed horizontally for proper function
  • Limited to DN20 size, not suitable for larger pipes
4
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Watflow Hayward Aquarite Flow Switch Replacement with 15Ft Cable - Durable Saltwater Pool Chlorine Sensor
Prime

Watflow Hayward Aquarite Flow Switch Replacement with 15Ft Cable - Durable Saltwater Pool Chlorine Sensor

Watflow
9.8
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • Broad compatibility with major Hayward and Goldline salt systems
  • Superior nylon material for long-lasting performance
  • Generous 15-foot cable length for versatile setups
  • Simple plug-and-play installation with clear flow direction guide
  • Effective protection against low-flow damage

Cons

  • Not compatible with spas or jacuzzi systems
  • Requires precise arrow-aligned installation for proper function
  • Gaskets may need adjustment for optimal sealing
5

Watflow DN20 3/4" NPT AWWA C708 Gallon Water Meter - Precise Cold Water Flow for Home, Garden, Apartment Horizontal Install

Watflow
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • High precision across flow rates from 0.25 GPM minimum to 20 GPM max
  • Lead-sealed register prevents tampering for trustworthy measurements
  • WRAS-certified casing suitable for potable water applications
  • Dry register design protects against moisture for clear, lasting readings

Cons

  • Requires non-return valve at outlet for accurate pulse output with backflow prevention
  • Designed for horizontal installation only, limiting vertical setups
  • Cold water use only; not rated for hot water or industrial liquids
6
Prime

Watflow DN20 3/4" NPT AWWA C712 Gallon Water Meter - Precision Cold Flowmeter for Home, Garden, Apartment Horizontal Install

Watflow
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • AWWA C712 certified for accurate, reliable performance
  • Corrosion-resistant materials extend lifespan
  • High flow capacity up to 20GPM suits home demands
  • Clear four-pointer gallon dial simplifies readings
  • Pulse output enables data logging

Cons

  • Requires non-return valve at outlet for precise pulse readings
  • Horizontal installation only
  • Needs initial reading noted as data is irreversible
7
Prime

Watflow DN20 3/4" NPT Cold Water Meter - ISO4064 Certified Cubic Flowmeter for Home Garden Horizontal Install

Watflow
9.6
ProductReviews.org score rating is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the ProductReviews.org tool. This score doesn't impact from any manufacturer or sales agent websites. We encourage you to write a review of your experiences with these products. Learn more »
Pros & Cons

Pros

  • High-precision measurement conforming to ISO4064 standards
  • Robust brass materials resist corrosion and wear
  • Equipped with pulse output for digital integration
  • Complete accessories for easy horizontal setup
  • Suitable for residential clean water use

Cons

  • Measures only in cubic meters, not gallons
  • Requires horizontal installation and non-return valve for accuracy
  • Limited to cold water (0.1°C-50°C) applications
8
Pros & Cons

Pros

  • Complete kit includes all essentials for immediate use
  • Durable copper and plastic components for long-term reliability
  • Easy siphon start and precise control simplify liquid transfer
  • Stable setup with clips and ties enhances safety
  • Multi-scene versatility covers diverse applications

Cons

  • Manual operation requires physical effort for siphoning
  • 6FT hose length limits use for very large or distant tanks
  • No powered mechanism for high-volume transfers
9
Pros & Cons

Pros

  • Exceptional durability from heavy-duty cast iron construction
  • High precision across transitional and nominal flow rates
  • Easy automation integration via pulse output
  • Broad flow range suits agriculture and industry
  • Hydrocarbon-resistant seals boost longevity

Cons

  • Restricted to non-potable water applications only
  • Dial-downward installation not recommended
  • Heavier weight due to cast iron body

Watflow Brand Guide

Watflow stands out in the world of precision measurement tools, particularly with its lineup of flowmeters and water meters designed for accurate fluid monitoring. Known for durable brass construction and certifications such as ISO4064 and AWWA, Watflow products cater to a range of needs from household water usage tracking to industrial flow analysis.

Brand Overview and Expertise

Watflow has built a reputation for delivering robust instrumentation in the Test, Measure & Inspect category. Their focus lies in flowmeters that ensure precise readings for water and other substances, making them a go-to choice for professionals and homeowners alike. What sets Watflow apart is the emphasis on versatility—products support both vertical and horizontal installations, pulse outputs for remote monitoring, and compatibility with standard NPT couplings.

The brand's commitment to quality shines through in heavy-duty materials like brass, which resist corrosion and withstand demanding environments. Whether you're managing water in a garden, apartment, or larger facility, Watflow meters provide dependable performance without unnecessary complexity.

What Makes Watflow Products Stand Out

Watflow excels in user-friendly design paired with professional-grade accuracy. Key features include:

  • Certifications: ISO4064 for international standards and AWWA for North American compliance, ensuring reliability across regions.
  • Installation Flexibility: Options for vertical or horizontal mounting, ideal for varied setups.
  • Pulse Output: Enables integration with data loggers or smart systems for real-time monitoring.
  • Durability: Heavy brass bodies built for cold water applications in harsh conditions.

These attributes contribute to Watflow's strong standing in the Substance Analysis Instrumentation space, where precision is paramount. Customers appreciate the straightforward cubic or gallon measurements, which simplify tracking and billing.

Product Quality and Reputation

Watflow maintains high standards in manufacturing, focusing on products that deliver consistent results over time. Their water meters are engineered for minimal maintenance, with clear readings that reduce errors in measurement. This reliability fosters trust among users in residential, commercial, and light industrial settings.

In the competitive Flowmeters market, Watflow's offerings are praised for balancing affordability with performance. The brand avoids gimmicks, prioritizing functional excellence that supports everything from home irrigation to apartment submetering.

Who Are Watflow Products Best For?

Watflow meters suit a broad audience:

  • Homeowners and Gardeners: Track usage for conservation or billing in homes and outdoor systems.
  • Property Managers: Monitor multi-unit water flow accurately and efficiently.
  • Industrial Users: Integrate into larger setups within Industrial & Scientific applications for substance analysis.
  • Hobbyists and Small Businesses: Reliable tools for custom irrigation or process monitoring.

Anyone needing precise, certified flow measurement without excessive costs will find Watflow's range particularly appealing.

Key Product Categories

Watflow primarily operates in flowmeters, with specialized water meters for cold water applications. These fall under broader categories like substance analysis instrumentation, where they provide essential data for flow rates. Their DN20 models, for instance, feature 3/4" NPT couplings for seamless integration into existing plumbing.

Explore related options in our comprehensive guides to stay informed on the best tools for your needs.

Frequently Asked Questions

What certifications do Watflow products carry?

Watflow meters feature certifications like ISO4064 and AWWA 708, ensuring they meet global and regional standards for accuracy and safety in water measurement.

Are Watflow meters suitable for both indoor and outdoor use?

Yes, their heavy brass construction makes them ideal for garden, home, apartment, and light industrial environments, handling cold water effectively.

Do Watflow products support pulse output?

Certain models, such as vertical water meters, include pulse output for connecting to external readers or automation systems.

Can Watflow meters be installed horizontally or vertically?

Absolutely—the brand offers options for both orientations, providing flexibility for different plumbing configurations.

What sizes are available from Watflow?

Popular sizes like DN20 with 3/4" NPT couplings are common, fitting standard residential and commercial setups.