FLOATING METAL TO METAL BALL VALVES

METAL TO METAL FLOATING BALL VALVES

The metal-to-metal floating ball valves are operated by a shaft attached to the top of the ball and rotates it 90 degrees (what is called quarter turn). As the ball rotates, the bore opens or closes, releasing or stopping the flow of fluid. As the ball rotates on its stem, the flow pressure pushes the ball against its seat downstream, creating a tight seal. Thus, floating ball valves may not seal as effectively in very low pressure applications after some seat wear has occurred. This is because there may not be enough pressure to push the ball into the seat downstream to create a watertight seal. However, in most applications downstream pressure is enough to maintain a tight seal long after the seats have begun to wear.

Metal seated

Metal seats are suitable for corrosive environments and products as well as high temperatures. They are also suitable for solid particles in suspension. Copper alloy, for example, is a suitable material for low pressure valves. Nickel-based alloys are often the ideal choice for corrosive media. Depending on the type of material, these valves can generally withstand tougher conditions than soft seat valves, including acids, heat, abrasives, hydraulic shock, erosion, corrosion and pressure.

Metal seated valves are usually more expensive than soft seat valves, but they can also have more leaks than a soft seat valve.

In our ball valves catalogue you will find our wide range of products.