FLOWSEAL is one of the world's leading manufacturers of high performance butterfly vlaves. Based on many years of research, development and field experience, the FLOWSEAL design is superior to and more versatile than the high performance butterfly valve designs offered by other manufacturers.
The FLOWSEAL soft seat valve provides a bi-directional bubble-tight shutoff (zero leakage) by the use of a patented seat. This unique seat design creates a self-energized seal in vacuum-to-low pressure applications.
Under high pressure conditions, the seat is also designed to permit, confine and direct movement of the soft seat to create a pressure-energized seal against the disc edge, up to the full ANSI class 150, 300 and 600 cold working pressures.
The soft seat is designed for high cycle services with minimal wear and low torque. Seat replacement is a simple operation, requiring no special tools.
The ANSI 150 30" through 48"; ANSI 300 14" through 30"; ANSI 600 10" through 16" sizes feature a two-piece shaft design which utilizes a lower packing seal in the valve body to prevent external leakage. The component parts are of the same design used in the packing assembly in the top of the valve body neck.
The ANSI 150 14" through 24" sizes feature a two-piece shaft design. The lower shaft utilizes an end seal in the body to prevent external leakage. The component parts include an end seal, an end cap and end cap bolts.
© Pneumatic Control, Inc. 1999/2000