NAF – Torex H.P. Butterfly ValveEnquire Now

Torex On/off & Control

Torex Manual Operation

Torex Exploded View

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 250^oC that also complies with EN ISO 15848-1 for fugitive emissions. Standard PTFE lined stem bearings for applications up to 250^oC 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.

Our Valve Repair Centres in Secunda and Durban provide a full valve repair and reconditioning service as well as valve automation to assemble and test your valve packages.

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

Specifications

Series	Torex
Design	High Performance Butterfly Valve (HPBV)
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 250^oC Excellent flow control charasterictics for demanding applications CE-Marked to PED97/23/EG module H, category III
Size Range	DN 80 – 700 / 3” – 28” > DN 700 refer NAF-Unex
Pressure Rating	PN10 – 40 / ANSI 150 – 300
Temperatures	Up 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	Graphite packing for steam up to 350^oC Degreased for oxygen Stem sealing for vacuum O-ring for stem sealing Profibus Valve Positioners HART Valve Positioners
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.