Pneumatic tool having a two-stage flow control

A pneumatic tool comprising:

• a body having a passage adapted to permit a gas to flow therethrough;
• a switch valve including a plug sealing said passage, a plug rod connected to said plug, and a rod member extending in said body along an axis for driving said plug rod and said plug, such that movement of said rod member in said body in a direction results in a gradual increase in flow rate of the gas in said passage, said plug rod being connected to said rod member such that an angle is formed therebetween;
• and
• a trigger mounted on said body and connected to said rod member, said trigger including a first plate and a second plate, said first plate being operable manually to covert between a first position whereat said second plate cannot be driven by said first plate, and a second position whereat said second plate can be driven by said first plate, conversion of said first plate from said first position to said second position resulting in movement of said rod member in said body along said axis in the direction by a first distance, after which said first plate is operable manually such that said second plate is driven by said first plate to move said rod member along said axis in the direction by a second distance.