The diagrams depicts how a fire extinguisher works.
The diagrams depicts how a fire extinguisher works. 70Njy
The main parts of fire extinguisher and the methodology of its functioning are illustrated in the diagram.
At firs glance it can be clearly seen that, the fire extinguisher has eight parts(a pin, n, a valve, a cartridge of gas, a siphon tube, a water container, a lever and a rod).
Initially, the pin should be pulled out which activates the whole system. Next as the lever is pushed down rod open valve, consequently gas is released into the container. Subsequently, water forced up through the siphon tube, followed by water is thrown toward the source of the fire through the nuzzle to make fire extinguish. Finally, if the lever is released, the rod will retreat to the first position and close valve, consequently, the releasing of gas is stopped.
Overall, the fire extinguisher has a simple mechanism which contain eight parts and start working by pushing down lever after removing pin, and the function will be inhibited if lever is released. 
The main parts of  
fire
 extinguisher and the methodology of its functioning  
are illustrated
 in the diagram.
At firs glance it can be  
clearly
  seen
 that, the  
fire
 extinguisher has eight parts(a pin, n, a valve, a cartridge of gas, a siphon tube, a water container, a  
lever
 and a rod). 
Initially
, the pin should  
be pulled
 out which activates the whole system.  
Next
 as the  
lever
  is pushed
 down rod open valve,  
consequently
 gas  
is released
 into the container.  
Subsequently
, water forced up through the siphon tube, followed by water  
is thrown
 toward the source of the  
fire
 through  
the nuzzle
 to  
make
  fire
 extinguish.  
Finally
, if the  
lever
  is released
, the rod will retreat to the  
first
 position and close valve,  
consequently
, the releasing of gas is  
stopped
. 
Overall
, the  
fire
 extinguisher has a simple mechanism which contain eight parts and  
start
 working by pushing down  
lever
 after removing pin, and the function will  
be inhibited
 if  
lever
  is released
.