Clarke Valve announces ISO 9001:2015 certification as it expands in-house manufacturing capabilities. ISO 9001 is a quality management standard that provides tools and guidance for companies to ensure their products and services consistently meet customer requirements, and that quality is consistently improved.
2018 June
Clarke Valve announces the API 641 certification of its proprietary Dilating Disk™ Valve design, the first control valve to achieve this certification of low fugitive-emission performance.
The API 641 standard applies to all stem seal materials and requires a stringent maximum allowable leakage of 100 parts per million by volume (PPMv). This API test standard calls for 610 cycles of the valve under extreme temperature fluctuations to evaluate emissions performance over an accelerated life cycle.