New DMN-WESTINGHOUSE High Pressure valve beats air leakage
Recently DMN-WESTINGHOUSE has presented its newly designed HP high pressure rotary valve. This valve has a very important advantage in air leakage: the special configuration of the body and rotor does not only protect 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 DMN-WESTINGHOUSE HP rotary valves with specially designed inlet are very suitable 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, rotor and seals has been specifically developed to minimise degradation of the product which runs through it, whilst retaining the best possible pocket filling efficiency.
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. 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.
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 standard models are suitable for handling products up to a temperature of +80°C and a maximum pressure difference of 3.5 bar.
DMN-WESTINGHOUSE have been designing and manufacturing rotary valves and diverter
valves for bulk solids handling for more than 45 years. Offering tailor made solutions to the
global food, dairy, plastics, (petro)chemical, pharmaceutical, mineral, power and biomass
industries, our range comprises a number of universal components suitable for many
applications. Additionally we supply components that are USDA Dairy Accepted, pressure
shock resistant to 10 bar, flame proof, ATEX 94/9/EC compliant, EHEDG Type EL Class I compliant, etc.
DMN-WESTINGHOUSE Single Pipe Plug Diverter range extended with smaller sizes
The SPTD plug diverter has a single straight pipe and has been available in 6 sizes from 150 mm (6”) up to 400 mm (16”). To meet customers’ needs for smaller sizes, DMN-WESTINGHOUSE has recently extended the range with the SPTDS, available in 5 sizes from 50 mm up to 125 mm.
The SPTD(S) straight pipe diverter is very suitable for applications in the food, pet food, plastics and petrochemical industries. The design of the SPTD(S) plug diverter conforms to all current legislation regarding safety in the workplace. Consequently there are no moving parts on the outside. The SPTD(S) has been designed to be user friendly, pressure shock resistant and with standard static seals suitable for pressures up to 3 bar g. All sizes are optionally available with inflatable seals.
The DMN-WESTINGHOUSE SPTD(S) has been specially designed to route powders and pellets with minimum degradation in pneumatic conveying systems. A smooth passage of product is guaranteed by precision machining, very effective 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 SPTD(S) plug diverter consists of an aluminium housing and end covers in which a plug with a single straight pipe is installed. All product contact surfaces are made from stainless steel AISI 316. Optionally the product contact parts can be anodized aluminium. Two FDA approved silicone seals guarantee the sealing between housing and plug. The body is pressure tight, so ensuring no leakage to atmosphere. The plug 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.