DMN-WESTINGHOUSE provides components for the bulk solids industry including rotary valves, diverter valves, slide gates, and Morris couplings. They have 5 sales offices and 2 production facilities in Europe and the United States. The document provides an overview of their product lines, applications, designs, materials, and options.

1. DMN-WESTINGHOUSE Basic Training and Product Overview

5. World-wide network

6. AL Rotary Valve Design Standard “Drop – Through” valve

7. BL Rotary Valve Design Standard “Blowing - seal” valve

8. Rotary Valve Construction Body End Cover Rotor Seals Bearings

9. What does a rotary valve do? The main purpose of a rotary valve to maintain a pressure differential. This is done by creating an air seal using a multi-vane rotor. Rotors rotate within the valve housing with typical clearances of 0.13mm giving an air seal while feeding material.

10. Rotary Valve Applications Air Lock Application Vacuum dust extraction filtration unit. Valve being used to contain negative vacuum within the system.

11. Rotary Valve Applications Metering Application Silo discharge pneumatic conveying system. Valve used to meter product into a conveying line at a given rate while maintaining an air lock.

12. Rotary Valve Applications Explosion & Flame Containment Explosion & flame containment – “APS” Autonomous Protective System. Rotary valves commonly used to protect systems, containing the explosion within the system and stopping the flame path through the valve.

16. Rotor Designs Replaceable blades – Used with abrasive materials. Blades can be easily replaced to maintain tight clearances rather replace complete rotor. Reduced capacity rotor – Used on metering applications when a specified throughput is required with a good level of accuracy.

17. Rotor Designs Semi end-disc rotor – Used when handling abrasive material offering additional wear protection Closed end rotor – Commonly used when handling pelletized products such as plastic pellets. Closed end disc gives protection against end cover wear.

18. Rotor Designs Scalloped pocket / Radius pocket rotor – Smoothed root pockets used to help discharging sticky / hydroscopic products. Reduced capacity, multi-pocket, dosing rotor – Mostly used in the food and pharmaceutical industries when handling expensive active ingredients.

20. Seal Options Gland Packing Lip Seals Labyrinth – Spiral groove air purged seals

21. Wear Resistance Options Coatings Plasma sprayed tungsten carbide coating being applied to a BL end cover. Other coatings also available such as plasma and chrome. Replaceable blades Replaceable blades as standard with most of the DMN valve range. Hardox blades used for very aggressive products.

49. Options II 2. Drop out box (competitive pricing cast iron versions) 1. Inlet restrictor (stainless steel) 3. Air vent box 1 2 3

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