Clark RBK Slurry Knife Gate
Zero leakage, bubble tight shut-off.
100% Full bore.
|The Clark RBK seats are well suited for slurry service.
The face and seal profile allow easier installation and
can be used in most pipe style and mating flange configurations
Matching sleeves are placed in the valve housing to seal against
the gate when the valve is closed and seal against each other when
the valve is open.
When open, the improved sleeve I.D. profile and the sleeve compression
combine to provide a tight seal, containing the internal line pressure and
precluding direct pressure against the secondary seal.
As the gate moves from open to closed, a gap is created between the facing
sleeves, allowing any media that could potentially clog or jam the valve to be
purged out from between the sleeves, and potentially expelled outside the valve
housing to atmosphere.
With the gate fully closed, the sleeves are in full contact with the gate face.
Again, the sleeve profile provides an assist to the sealing function.
The unique Clark RKB sleeve assembly provides positive sealing action
when the valve gate is closed or open; protecting the metal parts from the flowing slurry.