Our products are manufactured under an ISO Quality Assurance Program that ensures each valve we produce meets or exceeds your exacting application requirements. Flowseal high performance butterfly valves are a standard in many industries including heating, ventilating and air conditioning, power generation, hydrocarbon processing, water and waste water treatment, Profile is designed for maximum flow and equal percentage control. The Flowseal Soft Seat valve provides a bi-directional bubble tight shutoff zero leakage by the use of a patented seat.

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We use cookies on this site to provide you with the best possible user experience. Privacy Policy. Flowseal is one of the world's leading manufacturers of high performance butterfly valves. 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 design 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 higher pressure conditions, the seat is also designed to permit, confine, and direct movement of the soft seat against the disc edge, up to the full ASME Class , and Cold Working Pressures.

The soft seat is designed for high services with minimal wear and low torque. Seat replacement is a simple operation, requiring no special tools. In normal operation, the soft seat provides a bi-directional "bubble tight" shutoff zero leakage ; the metal seat provides bi-directional shutoff in the event of a fire, in conformance to industry fire-safe requirements. With little or no pressure, the Fire-Flow seat creates a selfenergized seal against the disc.

Higher line pressures act on the geometry of both seats to dynamically load them against the disc, creating higher sealing forces in either direction. Stainless steel outer bearings are included for post-fire disc and shaft alignment.

Fireproof packing is used to prevent external shaft leakage. Privacy Policy OK, I understand. News and Events Careers Press Room. Product Technical Info. Product Selection Guide. Terms and Conditions Privacy Policy Careers. All Rights Reserved.


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Crane Flowseal® High Performance ANSI 150 lb Butterfly Valves w/ RTFE Seals, SS Disc, Wafer Style


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