Clarke Valve™, developer and manufacturer of the most reliable, efficient and compact control valve, has reached yet another technical advancement, to add to its ever-expanding list of notable achievements. On April 7, 2020, Clarke Valve™ secured a U.S. Patent Award, for a Low Emission Bonnet Seal design, U.S. Pat. No. 10,612,661.
This Low-Emission Bonnet Seal is standard equipment on every Clarke Valve product, rather than a high-cost option, unlike others in the industry. Clarke Valve takes pride in not charging customers more to lower emissions throughout the industrial process.
During the process of receiving the U.S Patent Award for the Low Emission Bonnet Seal design, the Shutter Valve became one of the few control valves to qualify for both ISO 15848-1 and API 641 certification, as confirmed through independent testing by Yarmouth Research and Technology, LLC. API 641 is the American Petroleum Institute’s fugitive emissions standard for quarter-turn valves while the ISO standard is the international version.
For reference, the Shutter Valve reduces valve greenhouse gas emissions by more than 98% when compared to competitors who market themselves as “low emissions” globe valves. According to the EPA, valves are 60% of the source of all fugitive emissions from the Oil & Gas industry.