Pagina 10 - VE-Dual Expanding Plug Valve-3102-7-A

Dual Expanding Plug Valve | 10
Working principle
Pa Pb Pa Pb Pa Pb Pa Pb
1 2 3 4
Valve is open
When the valve is fully open, both
seals are protected from the flow path
Valve is closing
plug is rotating
Valve plug and slips rotate to place seals
in closing position, during rotation there is
no contact between the body and seals.
Valve is almost closed
expansion of the slips
Once the plug has rotated 90°, the slips
expand onto the body seats without
causing any wear or abrasion to the seals.
Valve is closed
Double Block & Bleed
The elastomer seals are fully compressed.