You will need
  • - water
  • tube
  • - beaker
  • - stopwatch
Instruction
1
Rinse the nozzle in unleaded gasoline, and then in acetone. If the nozzle hole are resinous substances, carefully remove them soaked in acetone with a wooden skewer.
2
To check the throughput of the nozzles use a special device, acting on the principle of measuring the amount of water leaking from absolute and relative measurements. Make such a device from a small reservoir with two tubes, located at the very bottom.
3
One tube (drain) clip so that, exceeding the required level, the water after it has been drained from the tank. The other tube (the discharge) should serve to create a liquid column. At the end of rubber tube with a nozzle.
4
Under pressure the tube, place the beaker with graduations of not more than 5 cm3 with a volume of 0.5 l to Prepare a watch with a second hand or a stopwatch.
5
Ensure a continuous flow of water into the tank from the water supply. The amount of liquid ejected through a calibrated orifice of the nozzle in one minute, determine its carrying capacity. To do this, place a beaker under a stream and note the time. After exactly 60 seconds, remove the beaker from under the water.
6
The scale division of the beakers, which stops opposite the meniscus of the water corresponds to the throughput of the nozzle in cm3/ min, ensure that the direction of the spilling of the water jet corresponds to the direction in which it passes through the air or gasoline.
7
To reduce the handling ability of the nozzle to a position between the piercer inserted in the base output and input facets of the calibrated holes on two sides. Abut one of the two is inserted a beard in a hard surface and hit with a hammer on the second. So you upset the body of the nozzle, reducing the hole diameter and decreasing the throughput capacity.