In its latest product release, Oxford Flow, specialists in flow control equipment for the oil and gas, water, and industrial process flow technologies, has revealed that the ES axial flow valve can achieve zero fugitive emissions.

This is big news for many industries where zero leakage and fugitive emission control are crucial for safety, operational performance, and meeting regulatory requirements. The valve is uniquely designed with no external stem, eliminating the possibility of fugitive emissions caused by stem packing leaks.

Source: Oxford FlowSource: Oxford Flow

With no mechanical drive train, stress and slide loading, which typically lead to poor performance and mechanical failure, are avoided. The valve operates via a hydraulic power unit, with no need for an actuator, therefore reducing the overall size and weight of the valve. Oxford Flow claims that valve package size and weight is effectively reduced by 50%, and installation costs by about 30%.

During ISO 15848-1 testing, the ES valve was found to have a leakage rate that was one hundred times less than the allowed level for the highest performance level for isolation valves (Class A). ISO 15848-1 is the most rigorous testing procedure for the evaluation of external leakage of valve stem seals and body joints of isolating/control valves for pollutants or hazardous fluids.

The design, however, has not affected flow rate capability. The ES axial flow valve can operate at high flow rates and easily handles high velocities without risk of cavitation while maintaining a tight shut-off. This minimizes erosion of sealing surfaces, allowing the ES to deliver long-term zero leakage in a range of challenging applications and operating environments.

The ES axial flow valve is available in DN 50 to DN 300 (2 in through 12 in) sizes, in ANSI classes 150, 300, 600, 900 and 1500. It comes in a variety of cast or forged materials, as well as weld-end and flanged configurations.

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