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Check Factors affecting the service life of ball valves in residential buildings Factors Affecting the Service Life of Ball Valves in Residential Buildings Longevity Performance Design Media valve materials Final words: Factors affecting the service life of ball valves in residential buildings
The inherent design of ball valves makes them ideal for on/off control of a variety of media, but what exactly should you expect in terms of service life? A quick google search for “ball valve life” gives a general answer of 100,000 cycles. I wish the real answer was that simple. The reality is that the life of your ball valves depends on several factors. Ball valves in high-pressure or high-cycle environments need maintenance or replacement more frequently than those with infrequent operations, and that’s before media-specific nuances are considered.
You will find that most ball valve manufacturers give warranties on the life of their products because there are many factors that must be considered first. A ball valve is designed to handle gases and liquids in process systems serving the oil and gas and chemical processing industries. They are also commonly used in the food and beverage industry, mechanical engineering, and automobile manufacturing and maintenance.
Valves that last longer and require little or no repair help save money, prevent downtime and keep plant production on schedule. Without routine maintenance and quality checks, problems with your ball valve can go unnoticed, leading to equipment failure, damaged parts, or injured workers.
While some ball valves are manually actuated, many are operated through an automatic actuator. Depending on the design cycle speed of your system, you have a choice of pneumatic (air-driven), electrical (motorized), or hydraulic (fluid-driven) actuation. By choosing the right power source for your application, you can reduce maintenance costs, increase uptime and maximize safety. Pneumatically operated ball valves are the most durable option in high pressure environments, as long as you have access to compressed air. In most cases, actuators last much longer than the ball valves they control.
Ball valves come in one-piece, two-piece, and three-piece designs, the first two of which are maintenance-free and require replacement in the event of component failure. However, three-piece ball valves are designed so that the seats and gaskets can be quickly and easily removed and replaced without removing the entire valve from the system. As long as the valve is made of a durable material, the ability to interchange components means that three-piece ball valves can last much longer than their one- and two-piece counterparts. For this reason, three-piece ball valves are preferred for high-pressure, high-cycle applications that subject sealing components to high wear.
Ball valves are generally intended for open/close control of liquids and gases without solid particles. Any particles in between can wear out the valve seals and lead to repairs, valve failure, or actuator failure. Conversely, lubricating media such as oils can reduce seal wear and further extend valve life.
Media is an important factor in ball valve body and accessory materials. Ball valves can be made of stainless steel, brass, bronze or plastic (PVC). While PVC offers flexibility and cost savings, metal ball valves are more durable and can withstand higher temperatures and pressures. In general, metal ball valves have a longer service life than those made of PVC or other synthetic materials. If in doubt about the proper valve material, use the Cole-Parmer Chemical Compatibility Database to ensure valve materials are compatible with your specific media.
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