Valvula reguladora presion diferencial Watts USVR - vista lateral  - Q-Tech ®  2024 2024

Watts USVR Anti-Noise Differential Pressure Regulating Valve

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Regular price €141,35 Sale price€116,82
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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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🚀 Pressure Stability and Noise Elimination in Heating Circuits

The Watts USVR Differential Pressure Regulating Valve is a high-precision component designed to maintain a constant head (pressure) in heating systems using variable flow circulation pumps. Its primary function is to balance the overloads generated by reduced flow, preventing excessive pressure increases and eliminating annoying noise in thermostatic valves and radiators.

Manufactured with a cast bronze body and a large special steel internal spring, the USVR offers silent dynamic construction and high precision in adjustment, ensuring optimal performance for gas boilers that require a minimum circulation flow.

✨ E-E-A-T and Benefits: Guaranteed Control and Silence

Installing the Watts USVR demonstrates Expertise in hydraulic design, ensuring an efficient, quiet, and safe system, which generates high Trust.

  • Effective Noise Elimination: Controls the pump head, preventing overpressures that cause hydraulic noise in the system's terminal elements.
  • System Protection: Ensures a minimum amount of circulating water, protecting gas boilers against overheating and flow fluctuations.
  • Simple and Precise Adjustment: Incorporates a visible adjustment scale (from 50 mbar to 500 mbar) that eliminates the need for complex diagrams for on-site configuration.
  • Quality Construction: Long-lasting cast bronze body and a central shaft with hydraulic damping for low friction and silent dynamic operation.
  • Convenient Factory Pre-setting: Comes configured as standard at 200 mbar, a suitable value for most installations.

🛠️ Detailed Technical Specifications (Data Sheet)

This section confirms the design characteristics of the Watts USVR valve.

Feature Technical Detail
Function Differential Pressure Regulation (Proportional Band)
Body Material High-Strength Cast Bronze
Spring Material Special Steel (for high precision)
Connection Threads According to DIN 2999 Standard
Opening Pressure Range 50 mbar to 500 mbar (Continuous)
Factory Pre-setting 200 mbar (2 m.w.c.)
Adjustment Simple via visible scale; protected against unwanted tampering.
Damping Hydraulic of the valve disc central shaft (Silent)
Available Connection Models 1'' Male-Female (M-F), 1 1/4'' Male-Female (M-F)

❓ Technical Frequently Asked Questions (FAQ)

💡 Why is hydraulic damping important in this valve?

The hydraulic damping of the central shaft is key to silent operation. It reduces friction and the disc's reaction speed to small pressure changes, preventing "water hammer" and noisy oscillations, especially when the pump flow varies rapidly.

💡 What does it mean that the valve adjusts "within a proportional band"?

It means that the valve is not an "all-or-nothing" control. Instead of closing or opening completely upon reaching a threshold, it modulates its opening gradually and proportionally to the detected pressure difference. This results in fluid and, therefore, silent regulation.

💡 Is the factory setting of 200 mbar always suitable for systems with variable speed pumps?

For many standard domestic heating systems, yes, it is a good starting point. However, in systems with very high-head high-efficiency pumps or with large differences in circuit pressure loss, it is recommended to adjust it to the exact design value (desired head) to maximize efficiency and silence.

📞 Technical Support and Adjustment Advice

If your system presents noise or if you need to calculate the optimal differential pressure for your installation (including specific gas boilers), contact our technical support team. Our specialists will help you calibrate the Watts USVR to achieve maximum comfort and efficiency.

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