NAF – Torex H.P. Butterfly ValveEnquire Now

NAF 8211 Torex HP Butterfly ValveNAF 8211 Torex HP Butterfly ValveNAF 8211 Torex HP Butterfly Valve

BRAND: NAFCATEGORY: Butterfly Valves, Control Valves,

The NAF-Torex is a High-Performance butterfly valve that is ideal for isolation, on-off and rotary modulating control with metal-to-metal or PTFE seats. A special disc profile eliminates abrasive sliding action when the disc opens and closes, thereby ensuring a longer service life while the high seat angle ensures that the disc closes without tending to stick. It comes with the standard Zebra-CL™ live loading stem packing which when used with an Inconel seat will give you a standard process valve with a maximum temperature of 250oC that also complies with EN ISO 15848-1 for fugitive emissions. 

Standard PTFE lined stem bearings for applications up to 250oC means that there are low operating torques for all control positions so that smaller actuators can be used. With the NAF modular concept, you do not need mounting brackets and it can easily be converted in the field from a shut-off valve to a control valve by fitting the direct mounting NAF-Turnex double acting or single acting control actuator. When fitted with the factory standard direct mounting NAF-D30 Intelligent Valve Positioner, calibration is simple and fast. Advanced / Premium diagnostics ensure you can monitor valve performance. An optional air block can be fitted to connect the positioner to the actuator so that external piping that can easily be damaged is a thing of the past.

With optional wafer or lugged versions the NAF-Torex is well suited for applications within the process industry. The unique design with a patented disc profile, when fitted with metal seats gives a sealing class of IEC 534-4, Class V and soft seats EN 12266-1, Rate A.

Contact one of our technical specialists for a quote today or download the brochure to learn more!

Specifications

SeriesTorex
Design

High Performance Butterfly Valve

Features
  • NAF Modular concept means no mounting brackets are required and pneumatic actuators and positioners are direct mount
  • One piece leak proof body minimises leaks to the environment
  • Special disc profile ensures eliminates abrasive sliding when opening and closing
  • PTFE lined bearings ensure low torques in all control positions so smaller actuators can be used
  • Standard Zebra-CL™ live loading stem seal for temperatures up to 250oC
  • Excellent flow control charasterictics for demanding applications
  • CE-Marked to PED97/23/EG module H, category III
Size
Range
Pressure
Rating

PN10 – 40 / ANSI 150 – 300

TemperaturesUp to 350°C
End
Connections
Wafer / Lug
Body
Materials
  • Stainless Steel EN 1.4408 / CF8M
  • Other materials on request
Disc
Materials
Stainless Steel EN 1.4408 / CF8M
Seat
Materials
Inconnel / PTFE
Options &
Accessories
Applications

Isolation, on/off and modulating control for liquids, gases and steam throughout the chemical, pulp and paper and process industries. The excellent characteristics of the NAF-Torex are beneficial in difficult control applications where media, demanding pressure conditions make severe demands on the design, materials and performance of a valve.

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