Air Blower

Confined Space Ventilation Blowers

The 20cm Com-Pax-Ial blowers AC and DC models have the ‘no tools required’ quick connect clipping system for attachment for either input extraction or output ventilation operation. The built in canister accommodates for a choice of 4.6mtr or 7.6mtr ducting and is constructed of hi impact, lightweight, UV and chemical resistant polyethylene. Produced in safety orange the unit has built in carry handles. The combination of superior design, a nine blade polypropylene fan, steel powder coated grill and strict quality control procedures provides for performance, durability, ease of use and most importantly in today’s economic environment, low cost of ownership. OTB Products also carries the Manhole Ventilation Pass- thru (MVP) which connects to the Com-Pax-Ial air blowers and makes entry and exit so much easier. This unique system, the first to combine a low profile manhole air vent, 90 degree elbow and built in mounting all in one, can be dropped down into the manhole with a quick release of the draw string that holds the collapsible ducting. The collapsible duct springs back into shape once worker is down into the manhole. The ducting is vinyl and polyester with PVC coating and heat resistant up to 180oF. The manhole cover fits into a flat channel corner for stabilization. Compact, lightweight and made from Linear Low Density Polyethylene (LLDPE), the MVP is not statically conductive. This unit is easy to store and ships in one small carton. Recyclable. Tough and lightweight the Allegro compact air blower – confined space ventilation blowers – are easy to get to any job and simple to use, no tools required. The Manhole ventilation pass-thru (MVP) makes confined space entry so much more efficient and safe – ventilation stays in place every moment. Most popular models are the 20cm AC A9533-15, A9533-25 and DC A9536-15, A9536-25. The Venturi Blowers from Allegro are a perfect solution to moving air in refineries, utility and power plants, shipyards, paper and pulp plants, the marine and steel industries and manhole operations. Available in Metal or Anti-static LLDPE plastic these venturi’s are lightweight, have multiple inlet ports, sturdy steel galvanised diffuser, single piece cast aluminium inlet housing and have carry handles making them single person portable to any location. The Venturi Blowers are used to remove poisonous, explosive or hazardous fumes from confined spaces such as process towers, tanks and large pipes. You can cool works in elevated temperature conditions, or cool heavy equipment that may be in danger of overheating with a blast of directed air. This line of high performance, lightweight Venturi Blowers helps to create a safe, healthy working environment leading to greater efficiency and productivity. Welding fumes, hot air, gases and smoke can all be removed quickly and easily. These Venturi Blowers can also be used to move fresh air into a manhole. Compressed air or saturated steam is the power source for our Venturi Blower line. Small volumes of high velocity air (from the compressed air source) run through the casting and out the nozzle jets, creating a venturi action or pulling action that creates large volumes of air through the venturi and out the air diffuser.

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