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Cryogenic High Performance Butterfly Valves
Features and Benefits

For assured sealing... the Tufline CT4 Seat.

The CT4 cryogenic seat combines Kel-F and metal sealing elements and establishes both a Kel-F to metal and a dual metal to metal seal.

At cryogenic temperatures there can be a tendency for all plastic seats to embrittle and crack.

The metal carrier not only enhances the seal but also reduces the flexing of the Kel-F element and provides additional support.

	Normal operation - (right to left flow) This unique seat is designed for bi-directional flow control. As pressure increases, the seat shifts axially in the direction of the flow. This tightens the seat contact with the disc for sure sealing.
	Normal operation -- (left to right flow) Both the metal seat and the Kel-F seat are in tight contact with the disc. As line pressure increases, the seal tightens, axially.
Choose Semi or Full-Cryogenic Versions Semi-Cryogenic Valves have a nominal 8 inch extension over the standard valve. Suggested minumum temperature is -180°F. Full-Cryogenic Valves are suggested for temperatures lower than -180°F. Extension lengths are agreed between Xomox and the customer.

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