DMN-WESTINGHOUSE

Gieterij 3

2211 WC Noordwijkerhout

Netherlands

Phone: +31(0)252.361-800

Fax: +31(0)252.375934

www.dmnwestinghouse.com

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Products of DMN-WESTINGHOUSE (5)

Exhibitor Profile

Products (5)

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DMN-WESTINGHOUSE has been designing and manufacturing rotary valves and diverter valves for the bulk solids handling industry for more than 45 years. As an independent company with no involvement in system design, our sole activity is the development, manufacture and sale of these components.

DMN-WESTINGHOUSE offers tailor-made solutions to the global food, dairy, plastics, (petro)chemical, pharmaceutical, mineral, power and biomass industries. Our line of rotary valves and diverter valves comprises a number of universal components that are suitable for many applications. We also have a range of dedicated components for use in specific industries or to handle specific products. Stringent hygiene requirements and/or low capacities are often required in the pharmaceutical industry. With the emergence of new industries, our rotary valves have also proven themselves to be capable of handling recycled plastic from cars, vegetable waste, and so on.

Our rotary valves and diverters have a well-established reputation for being able to handle all kinds of dry powders and granular materials, such as sugar, cocoa, starch, flour, chemical ingredients, lime powder, china clay, fly ash and wood chips. A number of standard rotary valves can be upgraded, depending on the product to be handled. The housing can be made from Ni-hard casting when working with abrasive products, such as fly ash. Or the inside of the housing can be coated with chromium or tungsten, when working with mild abrasive products.

Diverters by DMN-WESTINGHOUSE come in many types and sizes, suitable for a specific use or a variety of applications. The extensive diverter range comprises a series of plug diverters (dual pipe, single pipe, CIP suitable, gravity) and tube diverters (2-14 ports), some of which are also available in USDA Dairy accepted version. For the mineral industry, the BTD ball type diverter with its rugged design is very suitable for handling abrasive products.

In certain parts of the process industry it is very important that product contamination is prevented in the process. When dealing with powders, there is also always a danger of dust explosions. In order to protect public health and ensure safe working conditions, governments have drawn up official legislation for systems and components. Moreover, private organisations have created specifications components should comply with in order to meet the required branch or system-specific requirements.

With regards to the USDA (United States Department of Agriculture), our AL, AML and BL rotary valves are tested and certified USDA Dairy Accepted. This also applies to our 2- and 3-TDV tube diverters, M-TDV multiport diverter and GPD gravity plug diverter. This means that these components meet the high standards that apply in the US food, dairy, pet food and other related industries.

Process systems and components often have to be able to withstand explosions and prevent fires from passing the component. This has resulted in official European legislation, known as the ATEX 2014/34/EU Directive. All DMN rotary valves and diverter valves are also available in ATEX 2014/34/EU-compliant versions.

In 2011 DMN-WESTINGHOUSE was awarded the official EHEDG Type EL Class I certificates of compliance for its hygienic CIP rotary valves. This enables DMN-WESTINGHOUSE to offer a range of components that are suitable for hygienic ‘clean in place’ (CIP) processing systems.

The European regulation EC 1935/2004 applies to all food contact materials. With regard to the use of these materials as parts in our components, we can supply a declaration of compliance and appropriate documentation that demonstrate compliance to the EC 1935/2004 regulation. The materials used also conform to FDA regulations with regard to food contact.

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MZC rotary valves with slide bars

MZC rotary valves with slide bars

• Supporting bars for easy removal of rotor and end cover
• Direct drive or chain drive
• Narrow, flexible and maintenance free construction with direct drive
• Hygienic, USDA Dairy Accepted versions available
• Versions conforming to EC 1935/2004 available
• Explosion shock resistant and flame proof versions
• Increased safety at work
• Versions with enlarged inlet available
• Flameproof versions available suitable for St2 products
• Versions conforming to ATEX 2014/34/EU available

The MZC rotary valves have proven themselves to be very successful in sanitary applications (Dairy execution) as well as many other applications. The unit has an easy detachable rotor which can be removed within a few minutes to facilitate inspection and cleaning. The configuration with direct drive has a very narrow construction. The direct drive, in conjunction with a frequency inverter, results in a very flexible, safe and maintenance free unit (no chains or grease).

The extraction mechanism offers a high degree of operator safety and gives the line operators considerable flexibility in cleaning and maintaining the equipment between runs. Moreover the stability of the extraction mechanism ensures that the rotor can be easily moved in and out of the housing without damaging the housing or the rotor blades.

The product line also includes USDA Dairy Accepted models and versions conforming to the EC 1935/2004 directive for sanitary use in the food and pharmaceutical industry: the types Dairy MZC with supporting bars for easy removal of rotor and end cover. These stainless steel valves are easy detachable in a few minutes and meet the highest hygienic standards.

The AXL and BXL valves are specially designed for applications where inlet size is more important than capacity and are generally used for products with poor flowability. These valves have an enlarged inlet and are available in 316 stainless steel and aluminium. The AXL and BXL valves are also available in MZC version.

The AL MZC and BL MZC valves are available in 6 sizes, capacity range of the rotor from 2,5-58 litre per revolution at 100% filling. The AXL MZC valves are available in 4 sizes, capacity range of the rotor from 5,5-34 litre per revolution at 100% filling. The AXL size corresponds with the dimension of the inlet flange.

The MZC valves are supplied in 316 stainless steel, cast iron and aluminium. Variations such as nickel and chrome plating and Tungsten coating are equally available.

The standard rotor has 9 fixed blades. Various rotor configurations are optionally available, such as adjustable blades, reduced capacity, scalloped fixed vaned, end disc etc. The rotor clearance has a high accuracy and tight tolerances. The end covers have outboard bearing, lubricated and sealed for life. Eight different types of shaft sealing are available.

The standard models are suitable for temperatures up to 150 °C and a pressure up to 1,5 bar g. Some versions are explosion shock resistant and flame proof up to 10 bar g pressure for St2 products.

Dairy Rotary Valves

Dairy Rotary Valves

• Drop through or blow through version
• USDA Dairy Accepted
• Versions conforming to EC 1935/2004 available
• Easy removal of rotor for fast and efficient cleaning
• Smooth product contact surfaces in food grade material
• Rotor pockets radiused and polished to Ra=0,8 µm (150 grit)
• Rotor vanes chamfered on all edges
• Flame proof and explosion shock resistant versions available
• Flameproof versions suitable for St2 products available
• Versions conforming to ATEX 2014/34/EU available
• CIP-suitable versions conforming to EHEDG Type EL Class I available

The AL-AXL and BL-BXL Dairy blow through rotary valves have been designed for use in the food, pet food, chemical and pharmaceutical industries where very high standards apply. The Dairy valves have an official USDA certificate of acceptance for use in dairy plants and are optionally available conforming to the EC 1935/2004 directive.

The construction of the valve is designed to avoid bacteriological contamination. All product contact surfaces are in food grade material and smoothly polished.

The AL-AXL and BL-BXL Dairy valves are optionally available in MZC execution with supporting bars for easy removal of the end cover and rotor without damaging the housing. The MZC valves are easy detachable in a few minutes.

The AL and BL Dairy valves are available in 6 sizes, covering a capacity range from approximately 2,5 to 58 litre per revolution at 100% filling. The BXL valves are available in 4 sizes representing a capacity range of the rotor from 5,5-34 litre per revolution at 100% filling. The AXL-BXL size corresponds with the dimension of the inlet flange.

The body and end covers are made from AISI 316 stainless steel (DIN 1.4408). The rotor is made from AISI 316L stainless steel (DIN 1.4404). For special applications internal and external mirror polishing of the valve is possible.

For the BL-BXL valves tri clamp connections are also available.

The shaft sealing is by means of gland packing or air purge.

The standard models are suitable for temperatures up to 80 °C and a pressure up to 2 bar g.
Flame proof and explosion shock resistant versions up to 10 bar g are also available.

PTD Plug Type Diverter

PTD Plug Type Diverter

• Pressure shock resistant up to 10 bar*
• Two channel design
• Minimal maintenance
• Compact form
• User friendly design
• No moving parts on the outside
• Pressure up to 3 bar g with static seals
• Sizes 50-150 up to 6 bar g with inflatable seals
• Versions with electrical drive available
• Wear resistant pipes are optionally available
• Versions conforming to ATEX 2014/34/EU available
* size 200 excluded

The DMN-WESTINGHOUSE PTD plug type diverters have been specially designed to route powders and pellets with minimum degradation in pneumatic conveying systems. The PTD plug type diverter is applied in the chemical, pharmaceutical, plastic, food and other related industries.

A smooth passage of products is guaranteed by precision machining, a good sealing and a complete obstruction free passage.

The user friendly fool proof design enables fast in situ internal examination, cleaning and, if necessary, replacement of seals.

The PTD design conforms to all current legislation regarding safety in the workplace. Consequently there are no moving parts on the outside.

The PTD is available in 7 different pipe sizes: ∅ 50, 65, 80, 100, 125, 150 and 200 mm.

The PTD plug type diverter consists of an aluminium housing and end covers in which a plug with two pipes is installed. All product contact surfaces are made from stainless steel AISI 316 / DIN 1.4404. Three FDA / EC 1935/2004 approved silicone seals guarantee the sealing between housing and plug. The body is pressure tight, so ensuring no leakage to atmosphere. The standard diverter can be used in systems with positive pressures up to 3 bar g (static seals). The sizes 50-150 are optionally available for pressures up to 6 bar g (inflatable seals).

The PTD is supplied with a complete electro pneumatic control system, including solenoids and inductive position sensors.

The standard diverter can be used for product temperatures ranging from –25 °C up to +80 °C at ambient temperatures of –10 °C up to +40 °C. Versions for higher temperatures are available on request.

HP High-Pressure Rotary Valves

HP high pressure rotary valves

Special inlet for maximum protection against product degradation
High filling efficiency
Lowest air leakage through self-adjusting seals
Robust construction
Easy to assemble and disassemble
Customised solutions
Drilled flanges in accordance with PN10 and ANSI 150lbs
Explosion proof models available up to 10 bar g
Flameproof versions available suitable for St2 products
Versions conforming to ATEX 2014/34/EU available

The HP rotary valves with a specially designed inlet have been designed by DMN-WESTINGHOUSE for applications in the metering and pneumatic conveying of granular formed products under a high pressure of maximum 3.5 bar g. The configuration of the body and rotor has been specifically developed to minimise degradation of the product which runs through it, whilst retaining the best possible pocket filling efficiency.

The DMN-WESTINGHOUSE HP valve has a very important advantage in air leakage: the special configuration of the body and rotor does not only protect the granular product against degradation, it also does not allow any axial air leakage. This means that this valve has an air leakage reduction of one third against other standard high pressure valves.

The HP valves are available in 3 consecutive sizes from 200 - 300, covering a capacity range of the rotor from 8.3 - 30 litre per revolution at 100% filling.

The HP valves are supplied with a 316 stainless steel body and aluminium end covers, in order to have maximum protection against wear.

The standard full end disc rotor is made of 316 stainless steel and has 12 fixed blades. Due to the state of the art manufacturing facility, a high accuracy and tight rotor clearances can easily be attained. The end covers have outboard bearings, lubricated and sealed for life. The special construction of the shaft sealing guarantees the lowest air leakage.

The standard models are suitable for handling products up to a temperature of +80°C and a maximum pressure difference of 3.5 bar.

All models offer optimum venting through the large vent hole, so a maximum product flow into the vented pockets is guaranteed. DMN-WESTINGHOUSE fits SEW drives as their standard.