The FOX VG Series Gas-Side Safety Valve is a highly important technical component for safeguarding and maintaining the integrity of accumulators used in modern hydraulic circuits. Developed to ensure the highest operating standards, the vital function of this valve becomes particularly evident in critical situations: in the event of overpressure within the system, the valve acts promptly by releasing the nitrogen contained inside the accumulator in a controlled manner. This gas release represents an essential safety measure, as it physically protects the accumulator body from potential and dangerous bursts, thereby preserving both plant infrastructure and overall safety.

Construction Features and Materials

Designed to withstand demanding working conditions, the valve is available in different material configurations to cover a wide range of industrial requirements. The standard version features a valve body made of robust A105 steel. However, for applications operating in particularly aggressive environments or requiring specific corrosion resistance, the entire component is also available in high-quality AISI 316 stainless steel. This dual construction flexibility allows designers to select the most suitable and safest material for their operating context.

Technical Connection and Calibration Specifications

Integration of the FOX VG Series Safety Valve into hydraulic systems is facilitated by a range of connections designed to ensure maximum compatibility. Although the standard connection is configured with a 3/4″ BSP-F port, the product documentation explicitly provides dimensional variants including 1/2″ and 1″ ports, offering broad versatility during installation and assembly. Another key technical aspect is the calibration pressure: it is not preset to a fixed nominal value, but is defined and calibrated strictly according to the specific request of the user, ensuring perfect alignment with the unique design parameters of each individual system.

Thermal Performance and Regulatory Compliance

From the standpoint of thermal performance during operation, the valve has been carefully engineered to maintain full functionality over an extremely wide operating temperature range, from -20°C to +150°C. This broad range makes it perfectly suitable for use in industrial sectors subject to significant temperature variations. The accuracy of the relief operation is ensured by a nominal accuracy of ±7% relative to the set calibration value. Completing the technical profile of this essential component is full compliance with strict European safety standards: the valve is fully compliant with the CE/PED directive, a fundamental legal and technical requirement for the proper and safe marketing of pressure equipment. These features make the VG Series a leading and highly reliable component among gas-side accessories.

Technical Summary Table