High pressure ball valves are used for controlling, guiding, directing and modulating flow in various processes. They are available in a variety of configurations and sizes to meet specific application requirements.
There are four body styles for ball valves: top entry, three-body connector, bottom entry and trunnion mounted. Each design offers different access points for installation and maintenance, making it easy to replace or repair seats and seals without disassembly from the pipe system.
The bonnet forms the second pressure boundary of the ball valve and reinforces the strength of the body to counter the pressure of materials flowing through the pipes connected to it. It is usually bolted or screwed into the valve body to make sure it stays intact.
The seats for a ball valve are usually made of elastomeric material such as Teflon. These seats are designed to withstand the pressure of a wide range of media and to prevent any contamination from getting in.
A rising stem ball valve eliminates the problem of seal rubbing, which can lead to failure. The stem wedges against the set and tilts upwards when the valve is closed, preventing any direct contact between the seal and the seat.
Trunnion Mounted Valves
A trunnion mounted ball valve is designed with a pin that secures the ball so it doesn’t dislodge and cause damage to the valve or the system. It also reduces operating torque by absorbing the stress of the flow.