API Mounted Ball Valve

API Mounted Ball Valve

API mounted ball valve means API trunnion mounted ball valve. The coating material of this kind of valve meets the requirements of  API standards. API is the main U.S trade association for the oil and natural gas industry, representing about 400 corporations involved in production, refinement, distribution. The publications, technical standards, and electronic and online products are designed to help users improve the efficiency and cost-effectiveness of their operations, comply with legislative and regulatory requirements, and safeguard health, ensure safety, and protect the environment. Each publication is overseen by a committee of leading industry professionals. API's publications are developed by member company engineers and other professionals. API definate a varity of standards, among them API SPEC 6D is definated for the ball valve.

A API trunnion mounted ball valve is often preferred as it has a distinctive lower operating torque than the floating ball valve since pressure forces tending to push the ball downstream are supported by a trunnion rather than the valve seat. API Mounted Ball Valve is fixed, so that it does not move within medium pressure. It is widely used in valves that can endure high pressure. To decrease the operation torque and increase sealing reliability, lubricated ball valves are adopted in recent years. In certain applications, the API Mounted Ball Valve has an additional advantage in the fact that when the ball valve is in the closed position the upstream seal is under line pressure while the downstream seal is pressure relieving, eliminating the possibility of a pressure lock in the center cavity.