valve Archives - Page 3 of 3

Miniature Burst Disks Problems

Posted on April 28, 2016April 28, 2016 by Vitalii Prokopiv

Rupture disks have been the go-to system for protecting vessels from over-pressurization. Miniaturization of these rupture disks has brought new setbacks in materials and designs.

Burst disks are widely chosen over safety valves due to their quick response and evacuation of the vessel. These disks are produced to “fail” at a predetermined pressure difference between both faces of the disk. It is when they fail at that pressure that they protect the vessel from failing in a more disastrous manner.

As rupture disks are made smaller and smaller, low rated disks must use paper-thin metals easily broken during handling, assembly, and operation. It is recommended to use these disks when operation pressures are 75% or less of the rated burst pressure.

Click here for the full article from Product Design and Development.

GE Provides Water Treatment For Chinese Chemical Plant

Posted on April 27, 2016 by Vitalii Prokopiv

GE is taking over waste-water treatment processes for a Chinese coal-to-chemical plant in light of new regulations. The goal of this project is to eliminate any liquid discharge and allow the plant to reuse all water for production.

Under China’s new regulations, including the Water Pollution Action Plan, the New Environmental Protection Law and China’s 13th Five-Year Plan, these plants must eliminate the liquid discharge of waste-water into the environment, and a ZLD system must be installed to obtain a permit for these plants.

The advanced Zero Liquid Discharge technology from GE combines a vapor recompression brine concentrator and a crystallizer for cost-effective environmental protection.

Click here for the full article from Hydrocarbon Processing.

Solenoid Valves Improving Temperature Range

Posted on April 22, 2016 by Vitalii Prokopiv

The operational temperature range for solenoid valves is increasing with the release of the new ASCO 327. This updated model is suitable for use in temperatures as low as -60°C, previously the lowest rated temperature was -50°C. The upper bound for this solenoid valve is 90°C.

This new-found lower temperature rating will result in much wider arctic and polar applications for this valve, an increasing likelihood in oil and gas explorations. Other new features include a higher spring force and a power consumption of 5.6 watts AC, and is available on a range of 37 series valves.

Click here for the full article on Control Engineering.