Controlling Fugitive Emissions

"The greatest control challenges we see often surround fugitive emissions,” says Kari Kohonen, strategic account manager for oil and gas with Valin Corp. “And, the challenges encountered in this area are directly related to the reliability of existing equipment, as well as the use of outdated valve technologies and correct installation procedures to ensure that they are remaining compliant with EPA standards.”

Solution: Mitigating valve leaks and increasing reliability. “It is important to provide solutions with technologies that contain and reduce fugitive emissions by mitigating leak potential and providing greater reliability,” says Kohonen. Valin offers three solutions to assist here: rotary globe control valves, transmitter manifold valves and instrument tubing connections.

While conventional globe control valves use a linear rising stem that inherently pulls process fluids or gases up through the valve stem packing, increasing the risk and probability of introducing emissions into the environment, the Metso/Neles rotary globe valve, Series ZX, reduces that risk because the valve stem rotates within the packing, thus reducing the risk of emission leaks as the stem is not trying to pull process fluids or gases up through the packing.

Parker’s PGI transmitter manifold valves feature the company’s Pressure-Core stem-seal system for reliability and a virtually leak-free bonnet, which requires no maintenance. The leak-free design means no fugitive emissions in process level, flow, pressure and differential-pressure transmitter locations. And, the Phastite tubing connection system from Parker eliminates the requirement of welding and combines quick installation with a single-assembly process, achieving a tube connector that can be used in applications with pressures up to 20,000 psi (1,380 bars).

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