Open And Close Equipment's Accumulator Units meet design specifications specified in API 16D. Each control system is expertly engineered, assuring reliable control of the BOP stack with adequate reserve for continuous operation under emergency conditions.BOP closing units also known as Accumulator Units range in a variety of sizes. These units come standard with air/electric over hydraulic design but can also be delivered as a diesel driven setup. Here are some standard designs which can be customized to meet your needs.