Rotary Disk Isolation Valve

The Hull Rotary Disk valve design provides a wide open vapor flow path, similar to that of a butterfly valve's but without the validation and maintenance concerns. The Hull Rotary Disk valve eliminates the obstruction to smooth vapor flow which is inherent in poppet-style valves. Also, a poppet valve requires its operating mechanism to pass through the condenser interior which can present cleaning issues.

The Hull Rotary Disk valve design minimizes the generation of particulate inside the lyophilization vessel. The Hull Rotary Disk valve does not abrade the seal- the seal is in simple compression. Butterfly valves work with a scrubbing action as the disk closes across the valve liner. The scrubbing action of a butterfly valve generates particulate and accelerates seal wear.