Help with Downdraft Tables specifications:
Applications
Back to Top
|
| ||
| Your choices are... | |||
| Abrasives | Abrasives are substances that are used for grinding, honing, lapping, superfinishing, polishing, abrasive blast cleaning, pressure blasting, peening or barrel finishing. Abrasives include natural materials such as broken up nutshells, sand, garnet, emery, corundum and diamonds; and electric furnace products like aluminum oxide, silicon carbide, and boron carbide, as well as glass and various metallic abrasives. | ||
| Coolant / Oil Mist | Units are capable of filtering coolant smoke and mist from metal finishing and forming processes, and machining oil mists. | ||
| Explosive Media | The unit is capable of filtering explosive dusts, mists, and/or fumes. | ||
| Fine Powders | Fine powders can include carbon black, talc, pigments, oxides, and plastic compounding dusts. | ||
| General Cleaning | The unit is designed for general cleaning applications. | ||
| Litter Pick-up | A heavy-duty vacuum unit designed to accommodate large hoses for litter pick-up. | ||
| Non-free Flowing | Collection of non-free flowing or sticky powders and dusts. | ||
| Metalworking debris | Collecting metal scraps poses a potential health hazard to fabricated metal workers due to the oils, lubricants, and coolants that must be collected with the metal. Once picked up by an industrial vacuum cleaner, these metalworking fluids (MWFs) emit harmful aerosols that may contaminate the working environment, damage nearby equipment, and make floors slippery. | ||
| Reclaim / Recycle | The unit is designed to reclaim, recycle, or recover materials for reuse. | ||
| Spill Recovery | Spill recovery units are typically large vehicle transports designed to reclaim or recover large spills. They are often used in fire, aviation, petrochemical, and other industrial applications. | ||
| Welding Fumes | The unit is designed specifically for the collection of welding fumes or dust; these may include flux recovery systems. | ||
| Toxic Media | The unit is capable of filtering toxic materials such as dust, mist, fume, or smoke from the air | ||
| Other | Other unlisted, specialized, or proprietary configuration. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
| |||
Performance Specifications
Back to Top
|
|
| ||
| Airflow | Airflow is the velocity of the air stream created. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
| |||
| Vacuum Pressure | Vacuum pressure is commonly referred to as static pressure (SP) or water lift. With vacuum systems, it is most often used in discussions about pressure differential across a filter media. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
| |||
| Efficiency | The efficiency with which the filter system controls or eliminates contaminants. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
| |||
| Minimum Particle Size Filtered | The minimum particle size that units are capable of filtering. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
| |||
Features
Back to Top
|
|
| ||
| Your choices are... | |||
| Cleanroom Vacuum | The unit is designed specifically for cleanroom applications. Most cleanroom vacuums will be equipped with a HEPA filter or better. | ||
| Continuous Duty | Continuous duty units are rated for 100% duty cycle (constant use). | ||
| HEPA / ULPA Filters | High efficiency particulate air (HEPA) filters are replaceable extended-media dry-type filters in a rigid frame having a minimum particle collective efficiency of 99.97 percent for a 0.3 micron particle, and a maximum clean filter pressure drop of 2.54 cm (1") water gauge when tested at rated air flow capacity. Ultra low penetration air (ULPA) filters are extended media dry filters in a rigid frame that have a minimum particle collection efficiency of 99.999 percent for particles greater than or equal to .12 micron in size. | ||
| Instrument Panel | The unit is equipped with an instrument panel for user operation. The instrument panel may be equipped with an alphanumeric keypad, gauges, safety switches, on-off switches, or timer controls. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
| |||
Separation / Filtration System
Back to Top
|
|
| ||
| Separation / Filtration System | Systems for fine removal may only contain a single filtration system (such as a filter bag or cartridge). However, most units utilize a primary and secondary separation / filtration system. Furthermore, some units may have third and fourth stage filtration. All separation and filtration systems used within the unit should be specified. | ||
| Your choices are... | |||
| Bag-type Units | A baghouse is an air pollution abatement device used to trap particulate by filtering gas streams through large fabric bags typically made of glass fibers or fabric. | ||
| Cartridge-type Units | Filter cartridges are made out of a variety of synthetic fibers and are capable of collecting sub-micronic particles without creating an excessive pressure drop in the system. Filter cartridges require periodic cleaning. | ||
| Centrifugal Separators | A cyclone separator is an apparatus for the separation of fine particles suspended in air or gas by centrifugal means. | ||
| Electrostatic Precipitators | Electrostatic precipitators are a type of air cleaner, which charges particles of dust by passing dust-laden air through a strong (50-100 kV) electrostatic field. This causes the particles to be attracted to oppositely charged plates so that they can be removed from the airstream. | ||
| Impinger System | Impinger systems are a device in which particles are removed by impacting the aerosol particles into a liquid. | ||
| Modular Media Type | Modular media type units combine a variety of specific filter modules in one unit. These systems can provide solutions to many air contaminant problems. A typical system incorporates a series of disposable or cleanable pre-filters, a disposable vee-bag or cartridge filter. HEPA or carbon final filter modules can also be added. Various models are available, including free-hanging or ducted installations, vertical or horizontal mounting, and fixed or portable configurations. | ||
| Venturi | A wet scrubber, or Venturi scrubber, is similar to a cyclone but has an orifice unit that sprays water into the vortex in the cyclone section, collecting all of the dust in a slurry system. The water media can be recirculated and reused to continue to filter the air. Eventually the solids must be removed from the water stream and disposed of. | ||
| Wet Spray | Wet spray achieves intimate mixing by passing the contaminated gas through a constriction partly submerged in scrubbing liquor. This creates a spray in which particulate material is scrubbed. | ||
| Packed Bed | Packed bed or column is a common type of gas absorber in which scrubbing liquid is dispersed over packed columns containing packing material. This design provides a large surface area for gas-liquid contact. | ||
| Dry Injection | Dry injection is an air pollution control system that injects a dry sorbent into an exhaust stream. | ||
| Dry Spray | Dry spray is an air pollution control device for removing acid gases where alkaline slurry is introduced into the gas stream and the pollutants absorb into the droplets and react. The droplets dry in the gas stream, leaving particulate matter to be collected by a downstream particulate control device. | ||
| Circulating Fluid Bed | Circulating fluidized bed systems have high air velocities (as high as 30 feet per second) and fine particle sizes. As a result, the fluid bed is less dense (35 pounds per cubic foot) and has no well-defined top surface. Large quantities of bed material are recaptured from the gas stream and recirculated back to the furnace to maintain bed inventory. | ||
| Other | Other unlisted, specialized, or proprietary configuration. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
| |||
| Collector Filter Cleaning | |||
| Your choices are... | |||
| Vibrating | Automatic (continuous or timed) shaking action provides a back and forth motion. The shaking action aids separation by spreading the material around the filter and/or bouncing the material. | ||
| Manual Shaking | Manual shaking action provides a back and forth motion. The shaking action aids separation by spreading the material around the filter and/or bouncing the material. | ||
| Pulse-jet | Pulse-jet blasts of air are used to dislodge particles and clean the filter. | ||
| Reverse Air | In the reverse-air technique, air is blown back through the filter material to remove dust. The compartment must be periodically shut down for the cleaning technique to effectively remove the material from the surface of the fabric filters. | ||
| Other | Other unlisted, specialized, or proprietary configuration. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
| |||
