Q. How to fill the air in an inflatable sofa?

Answer

If one was to use a simple piston to fill the air in a sofa then that might as well take a lifetime to do so. Manually it is impossible to fill up an inflatable sofa with our lung capacity. Therefore we need to have a compression pump to do this. These pumps can be connected to a car battery or local domestic supply. The compressor pumps air at high pressure into the air vent of the inflatable sofa. Depending on the size of the sofa it normally takes 5 to 8 minutes for the pump to fill up the inflatable sofa with air. These pumps can be bought separately in the market or ordered online and cost about 800 to 1000 rupees.