Butterfly Valve – double offset (soft seat)
Butterfly Valve – KKD-82
Double Offset Butterfly valves are well suited for applications where rubber lined butterfly valves cannot be used due to limited pressure and temperature range. These offer 100% bidirectional disc sealing with soft seats, while metal seat offers uni-directional sealing in high temperature applications. On request, the metal seat option can be made bi-directional to EN 12266-1 Class V.
A double offset butterfly valve has two offsets from the valve body’s center.
This creates a cam action of the disc in the seat, which reduces the torque required to operate the valve.
The double-offset butterfly valve is designed to be used in applications requiring greater resistance to the pressure.
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.
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Download data sheets
- KKD-82 / KKD-MS82 data sheet (pdf) (6.3 MB)
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