UNOX Butterfly Valve Ø250 Double Acting Pneumatic Wafer U-PVC Water

Description

Product Overview

The UNOX Ø250 butterfly valve is engineered to meet the rigorous demands of modern water handling systems. Featuring a double acting pneumatic actuator, this valve delivers rapid opening and closing cycles, ensuring precise flow regulation in a variety of industrial and commercial environments. The wafer‑type design integrates seamlessly between flanged connections, eliminating the need for additional fittings and reducing installation time. Constructed from high‑grade U‑PVC, the valve body offers exceptional resistance to scaling, corrosion, and chemical attack, extending service life even in harsh water conditions. With a maximum pressure rating of 10 bars, the valve maintains structural integrity under demanding operational loads while providing a lightweight solution that eases handling and transport.

Material selection plays a pivotal role in the valve’s performance. U‑PVC, known for its durability and low moisture absorption, ensures that the valve remains stable across a wide temperature range, from freezing conditions to elevated temperatures typical of hot water applications. The internal sealing surfaces are precision‑machined to achieve a tight shut‑off, minimizing leakage and maintaining system efficiency. Additionally, the valve’s compact wafer profile reduces the overall footprint within piping networks, allowing for tighter spacing in congested installations without compromising flow capacity.

Actuation is driven by a pneumatic cylinder that operates in a double acting mode, providing both opening and closing forces. This configuration guarantees that the valve can be positioned accurately regardless of air supply pressure fluctuations, and includes an automatic spring return feature that safely closes the valve in the event of air loss. The fast response time, typically under one second, enables real‑time adjustments in automated water distribution systems, supporting precise dosing, pressure regulation, and emergency shut‑off scenarios.

Installation is straightforward thanks to the wafer style, which requires only two bolts to secure the valve between flanges. This design eliminates the need for additional pipe modifications, reducing labor costs and downtime during retrofits or new installations. The valve is compatible with standard pipe sizes ranging from Ø63 mm to Ø315 mm, offering flexibility for a broad spectrum of projects. Detailed installation instructions and torque specifications are provided to ensure optimal performance and longevity.

Maintenance considerations are minimized due to the valve’s corrosion‑resistant construction and sealed pneumatic actuator. Routine inspections focus on verifying actuator pressure and checking for any external wear, while the internal components remain protected from water exposure. The valve’s design facilitates quick disassembly for service, allowing technicians to replace seals or perform adjustments without extensive system shutdowns. This low‑maintenance profile translates to reduced operational costs and higher overall equipment effectiveness.

Usage

The UNOX Ø250 butterfly valve excels in a variety of water flow applications where reliable control and durability are paramount. Its robust construction and precise actuation make it an ideal choice for irrigation networks, where consistent water distribution is essential for crop health and yield optimization. In industrial settings, the valve is frequently employed in filtration units, providing dependable shut‑off capabilities that protect downstream equipment from pressure spikes and contaminant ingress.

Beyond agricultural and industrial uses, the valve is well‑suited for HVAC systems that require precise water flow regulation for heating and cooling loops. Its ability to handle both high and low flow rates ensures efficient thermal exchange, contributing to energy savings and system stability. The valve also performs effectively in municipal water treatment facilities, where it manages the flow of treated water through various stages of purification and distribution.

Environmental conditions such as temperature fluctuations, exposure to sunlight, and varying water chemistries are accommodated by the valve’s U‑PVC body, which resists UV degradation and chemical attack. This resilience enables the valve to operate reliably in outdoor installations, underground pipelines, and indoor plant rooms alike. The double acting pneumatic actuator further enhances performance in environments where power reliability may be variable, as the spring‑return mechanism provides a fail‑safe closure.

Integration with modern control systems is facilitated through standard pneumatic connections, allowing the valve to be linked with programmable logic controllers (PLCs) and supervisory control and data acquisition (SCADA) platforms. This compatibility supports automated monitoring, remote operation, and data logging, empowering facility managers to optimize water usage, detect anomalies, and implement predictive maintenance strategies.

Why Choose Us

Choosing the UNOX Ø250 butterfly valve means selecting a product backed by rigorous quality assurance processes and a commitment to customer satisfaction. Each valve undergoes comprehensive testing, including pressure endurance, leak detection, and actuation performance, to verify compliance with international standards. The use of premium U‑PVC material sourced from reputable suppliers ensures consistent mechanical properties and long‑term reliability across all production batches.

Our dedication to excellence extends beyond the manufacturing floor. We provide detailed technical documentation, installation guides, and sizing calculators to assist engineers in selecting the optimal valve configuration for their projects. Our engineering team is available to offer personalized support, addressing any design challenges and recommending best practices for integration within complex water systems.

After‑sales service is a cornerstone of our value proposition. Customers benefit from a responsive warranty program that covers material defects and workmanship issues, as well as a network of authorized service partners capable of delivering on‑site assistance, spare parts, and maintenance training. This comprehensive support framework ensures that the UNOX butterfly valve continues to perform reliably throughout its service life, delivering a strong return on investment.

Key Features

• Double acting pneumatic actuator provides fast, reliable opening and closing for precise flow control.
• U‑PVC wafer body resists corrosion, scaling, and UV exposure, extending service life.
• Compact wafer design fits between flanges without extra pipe modifications, saving space and installation time.
• Maximum pressure rating of 10 bars ensures robust performance under demanding conditions.
• Comprehensive warranty and dedicated technical support guarantee long‑term customer satisfaction.

FAQ

What size options are available for the UNOX butterfly valve?

The valve is offered in a range of diameters from Ø63 mm up to Ø315 mm, covering most standard pipe sizes used in water and industrial applications.

Can the valve be used with both single and double acting pneumatic actuators?

Yes, the UNOX series provides both single acting and double acting configurations, allowing you to select the actuator type that best fits your system’s safety and control requirements.

Is the valve suitable for hot water applications?

The U‑PVC construction is rated for temperatures up to 60 °C (140 °F), making it appropriate for many hot water distribution systems while maintaining its mechanical integrity.

How does the spring‑return feature work in case of air supply loss?

In double acting models, a built‑in spring automatically closes the valve if pneumatic pressure is lost, providing a fail‑safe mechanism that protects downstream equipment.

What maintenance is required to keep the valve operating optimally?

Routine checks of the pneumatic actuator pressure and visual inspection of the valve’s exterior are recommended. The sealed design minimizes internal wear, so major maintenance is rarely needed.