BALL VALVES FOR WATER

KHD Flanged Ball Valves

KHD Flanged Ball Valves provide effective control of oil and gas operations. Their characteristic feature is the flanged ends that are bolted to the oil and gas piping.

In general, metal seats incorporate a metal-to-metal seal between the seats and ball of the valve assembly. In general practice, metal seats can stand up to extreme flashing, hydraulic shock, abrasive process fluid, and high temperatures. They are also ideal for high erosion or corrosion applications.

Soft seats are made of thermoplastic materials such as PTFE. They are ideal for applications where chemical compatibility is important and where the tightest possible seal is essential. However, soft seats are not recommended for dirty or abrasive process fluids. Soft seats can break under these conditions, causing leaks in the valve.

KHD Threaded / Butt Weld Ball Valves

A butt weld ball valve contains a butt weld-sized connection for inlet and outlet connection. The valve with butt welding end connection ensures no accidental leakage.

Threaded ball valves contain internal and external threads to facilitate inlet and outlet connections.

In general, soft seats are made of thermoplastic materials such as PTFE. They are ideal for applications where chemical compatibility is important and where the tightest possible seal is essential. However, soft seats are not recommended for dirty or abrasive process fluids. Soft seats can break under these conditions, causing leaks in the valve.

A block-type valve has the capacity to block movement in one or more directions. In practice, a block valve can prevent motion or allow motion to happen without restriction.

Fire safe ball valves are designed to minimize fugitive emissions and downstream leakage when exposed to high temperatures during fires.
They differ from other industrial ball valves by remaining operable, or at least failing in a predictable manner, when exposed to high temperatures.