·Butterfly Valve
NAF-Torex Triple Offset Butterfly Valve
NAF-Torex triple offset butterfly valve from Flowserve's NAF Control Valves. Available in multiple pressure classes, sizes, and sealing types — engineered with a choice of seat ring and packing materials to suit a broad range of process conditions.
Technical Features
- 01Triple offset design for high-performance, tight shut-off service
- 02Body and disc: EN 1.4408 / CF8M stainless steel
- 03Stems (upper and lower): EN 1.4460 duplex stainless steel
- 04Clamp rings: EN 1.4408/CF8M (DN >250) or EN 1.4436/AISI 316 (DN ≤250)
- 05Multiple seat ring material options for different services:
- 06• Inconel 718 — seal types 05, 07, 17 (metal-seated, high temperature/aggressive media)
- 07• EPDM elastomer — seal type 66
- 08• FPM (Viton) elastomer — seal type 55
- 09• PTFE carbon-reinforced — seal types 85, 86, 8A, 8B
- 10Shaft sealing options:
- 11• O-ring type (EPDM or FPM)
- 12• Graphite packing (box packing)
- 13• Zebra-CL™ V-ring PTFE (seal types 0A, 8A)
- 14• Safeguard V-ring PTFE live-loaded (seal types 0B, 8B)
- 15Can be installed in any position, regardless of direction of flow
- 16Arrow on body indicates the flow direction giving best tightness under differential pressure
- 17Flange gaskets per SS 359, DIN 2690, or ANSI B 16.5 (Class 150)
- 18Actuation options: manual operating lever, worm-gear unit, or pneumatic actuator
- 19Manufactured under ISO 9001 certified quality system
Have a Question?
Get In Touch