Caudalímetro FlowVis® PRECISIÓN Y AHORRO
Caudalímetro FlowVis® PRECISIÓN Y AHORRO
Caudalímetro FlowVis® - Q-Tech ®
Caudalímetro FlowVis® - Q-Tech ®
Caudalímetro FlowVis® EXTENSIÓN CABLE 8 METROS - Q-Tech ®

FlowVis® Flow Meter

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Sale price€289,10
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At Q-TECH, we apply the same clear rules for everyone: the law protects you, and when applied correctly, it protects us as well. By processing your purchase, you accept our General Terms and Conditions of Sale. If you are purchasing as a consumer (B2C), nothing stated herein limits the rights granted to you by mandatory law (RDL 1/2007, TRLGDCU): the 3-year legal warranty of conformity and the right of withdrawal under the terms and with the exceptions legally provided, which are detailed below. References to "B2B" apply only to businesses and professionals.

Your guarantees

  • Rights intact: 14 days of withdrawal from receipt for most products—subject to the legal exceptions you will see below, such as goods made to your specifications—and a 3-year legal warranty of conformity, under the terms of the TRLGDCU.
  • Conformity with the description: we guarantee that the equipment will correspond to the published technical description and what one could reasonably expect from it (arts. 115 et seq. TRLGDCU). Images and videos are for guidance only: the manufacturer may supply a more recent revision of the product or introduce minor aesthetic, packaging, or firmware changes, without this constituting a lack of conformity as long as the described characteristics and performance are maintained.
  • Traceability that also protects you: we document the condition, serial number, and seal of each piece of equipment upon shipment, and we video-record the opening of returns; this is your proof of the condition in which the goods were delivered.

Responsible use and your part

  • If you are thinking of returning it, keep it as you received it: without installing or activating it, with its seals, accessories, and packaging intact. This is how to ensure a full refund, without deductions.
  • Handling that exceeds inspection reduces value: handling the equipment beyond what is necessary to verify its nature and operation may result in a real, assessed, and case-by-case justified deduction (art. 108.2 TRLGDCU), never a fixed percentage. In particular: activating or registering the serial number, linking it to a manufacturer's account or app, circulating water through hydraulic equipment, unsealing probes, or installing software or consumables. Initial inspection of the product does not lead to a deduction.
  • The same item must be returned: withdrawal requires returning the supplied unit. Different equipment, or equipment with prior use, age, or wear prior to purchase, does not constitute a valid withdrawal.
  • Installation and cybersecurity, shared responsibility: this is technical hardware; you are responsible for correct installation, credentials, patches, and backups, while we deliver a compliant product. Q-TECH is not liable for damages resulting from poor installation, incorrect configuration, or omission of patches by the customer or third parties (in B2C, without prejudice to the legal warranty and liability for intent or negligence, arts. 86 and 130 TRLGDCU).
  • Delivery of bulky goods: delivery is made to the curb. B2C: transport risk is ours until physical delivery (art. 66 ter); we recommend noting visible damages on the delivery note and notifying us of breakages within 24-48 hours with photographs to activate the insurance. B2B: inspection and notation on the delivery note are mandatory; hidden damages must be reported within 24 hours (art. 366 CCom). Unjustified rejection or incorrect shipping information will entail the actual outbound and return costs (approx. €85-550 for heavy machinery).

Made to your measure (Advanced Pre-Assembly)

  • If your order includes equipment, racks, hydraulic assemblies, or technical rooms made or configured according to your specifications (permanent joints, custom cuts or wiring, parameterization, pressure testing), these are custom goods without the right of withdrawal from the conclusion of the contract (art. 103.c TRLGDCU; CJEU Case C-529/19), which is informed before purchasing and documented in the signed Order Note. A test you request without permanent modification retains your right of withdrawal, with only the actual loss of value caused by that test being deducted. Would you prefer to receive it tested, configured, and ready to connect, without assuming these risks? Contract our Advanced Pre-Assembly or the prior technical audit.

If you are purchasing as a business or professional (B2B)

  • The transaction is governed by the Commercial Code: firm sale, without the right of withdrawal; notification of defects within 4 days (apparent) / 30 days (hidden), arts. 336 and 342. Q-TECH acts as a distributor and excludes indirect damages, loss of profit, and data loss, limited to the price of the equipment, without prejudice to the manufacturer's commercial warranty.

Product warnings v1.0 · June 2026. Information summary; the complete and binding conditions are those published at q-tech.es.

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FlowVis®: Certified Precision Flow Measurement Engineering

The FlowVis® is the most accurate and reliable flow meter designed for water treatment and pool systems. This device combines a high-visibility flow indicator with an integrated check valve, ensuring exact monitoring of hydraulic performance. Inaction in flow measurement leads to inefficient filtration, energy waste, and failures in automated disinfection systems. The FlowVis® solves these operational risks through real-time readings with 97.9% accuracy, enabling the optimization of variable speed pumps.

Flow Monitoring and Energy Efficiency

The FlowVis® uses a calibrated scale design that does not require straight lengths of pipe before or after its installation. This technology allows you to know the exact flow rate to adjust pump RPMs and maximize operational energy savings (OPEX).

  • NSF Certified Accuracy: The only flow meter on the market with NSF 50 certification, guaranteeing exact readings across the entire flow range.

  • Operational Duality: Functions simultaneously as a flow meter and a high-reliability check valve, saving space and installation costs.

  • Filtration Optimization: Facilitates the adjustment of the flow velocity required for advanced filter media such as AFM, improving water biosecurity.

  • Error-Free Reading: Easy-to-read scale in m3/h or GPM that is not affected by air accumulation or internal turbulence.

Mechanical Robustness and Hydraulic Safety

The architecture of the FlowVis® is designed for continuous operation in demanding chemical conditions. Its robust design avoids the mechanical failures common in turbine or float-type flow meters, ensuring extended service life without the need for frequent calibrations.

  • Industrial-Grade Materials: Manufactured with corrosion-resistant components, compatible with saltwater chlorination systems and intensive chemical disinfection.

  • Versatile Installation: Its unique design allows it to be installed in any position (vertical, horizontal, or inverted) and directly after elbows or valves.

  • Zero Maintenance: It has no internal gears or electronic components that require a power supply or periodic spare parts.

  • Integrated Check Valve: Protects technical room equipment against water backflow and water hammer mechanically and automatically.

Technical Specifications

  • Reading Accuracy: 97.9% (NSF 50 certification).

  • Available Models: DN40, DN50, DN65, DN80, and DN100.

  • Units of Measurement: m3/h (Cubic meters per hour) and GPM.

  • Spring Material: High-strength stainless steel.

  • Maximum Working Pressure: 3.5 bar.

  • Operating Temperature: 0 to 50 °C.

  • Chemical Compatibility: Suitable for freshwater, saltwater, and ozone systems.

  • Certifications: NSF/ANSI 50 for pools, spas, and public spas.

Compatibility and Application Limits

The FlowVis® is compatible with all standard pressure PVC pipes. The model corresponding to the pipe's outer diameter must be selected to avoid hydraulic bottlenecks.

TECHNICAL RESTRICTION: Do not use in systems with pressures exceeding 3.5 bar. Ensure that the flow indicator arrow matches the actual direction of the water during assembly to prevent damage to the internal mechanism.

Frequently Asked Questions

  • Why is the FlowVis® more reliable than other flow meters? Unlike turbine models, the FlowVis® does not get blocked by small particles and does not lose accuracy over time. Its calibrated spring-based design allows for an exact reading without needing long straight pipe lengths.

  • How does the FlowVis® help save money on my electric bill? By knowing the actual flow rate in m3/h, you can reduce your pump speed to the minimum required for effective filtration. Without the FlowVis®, most pumps operate at excessive speeds, wasting up to 50% of energy.

  • Can the FlowVis® be installed next to a 90-degree elbow? Yes. The patented design of the FlowVis® compensates for turbulence. This allows it to be installed directly after an elbow or a pump without affecting measurement accuracy, something impossible for other flow meters.

Q-Tech Engineering Support

At Q-tech.es, we provide specialized technical assistance for the hydraulic optimization of critical installations. If you require support for FlowVis® sizing or an energy efficiency audit for your B2B system, contact our field engineers by phone or in person.

FlowVis® simple installation


Technical documentation:

Installation manual

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