A Marck MS ball valve refers to a ball valve manufactured by the company Marck (often associated with Marck & Care Engineers Limited or similar names) that is constructed from Mild Steel (MS), also known as Carbon Steel (CS). These valves are generally used in industrial applications for controlling the flow of various media, such as oil, gas, and water. Key characteristics and common specifications, based on available product listings, include: Material: Mild Steel (MS) / Carbon Steel (CS). Design: Often available in a three-piece design (3PC Flanged Ball Valve), which allows for easy maintenance. Other designs like single-piece or two-piece may also be available. End Connections: Commonly available with flanged ends or screwed/threaded ends. Pressure Rating: Maximum pressure can vary, with common examples being around PN 16 (approximately 16 bar) for some flanged types or higher for forged steel versions. Maximum Temperature: Varies by specific model, but examples show ranges up to 100^circ C or 220^circ C. Media: Suitable for oil, gas, and water, depending on the specific model and seals. If you are looking for specific details, it would be helpful to know: What size (in inches or mm) are you interested in? What is the required pressure and temperature rating? What type of end connection (flanged, screwed, etc.) do you need? What media (fluid or gas) will it be used with?