Emerson Enardo ES-665 spring-loaded thief hatch

Emerson Automation Solutions has introduced the Enardo ES-665 spring-loaded thief hatch for use on low-pressure storage tanks in oil and gas and other industries. Storage tanks can emit vapours to the environment, which has resulted in tighter regulations and the need for improved emissions control from storage tank devices.

To address this challenge, the ES-665 has been engineered with increased sealing forces, as well as with a tight and consistent fit of the sealing surfaces. The resulting emissions performance of the thief hatch is 0.10 SCFH (standard cubic feet/hour) at 90% of set-point (based on testing at ambient conditions in accordance with API 2000 and competitive published data). The Enardo ES-665 also helps conserve tank contents.

The product provides tank access as well as pressure and vacuum relief to accommodate tank pressure changes that occur under normal conditions. It also limits hatch emissions when pressure or vacuum relief is not required.

In addition to its ultratight emissions performance, the unit includes an available centre assembly for improved performance of previously installed models, multiple relief settings and material options for application flexibility, and a latching and lockable lid for added security and safety.