Handheld misting device with pressure-relieving handle

A misting device, comprising:

• a tank having a proximal end and a distal end and comprising a fluid chamber for containing a fluid;
• a barrel disposed in the tank and defining a barrel chamber;
• and
• a pump operable to pressurize the fluid chamber, the pump comprising:
• a piston disposed in the barrel chamber and forming an air-tight seal with the barrel;
• a rod attached to the piston and extending out of the barrel chamber, the rod comprising a mounting plate having a plurality of recesses;
• a pump handle disposed at the distal end of the tank, the pump handle being rotatably attached to the rod so that the pump handle rotates around a first axis of the rod, being in contact with the mounting plate, and being movable between a retracted position against the tank and an extended position, the pump handle being rotatable around a second axis of the tank, the pump handle comprising:
• a post extending from the pump handle parallel to the rod toward the tank, wherein the post slides over a portion of the mounting plate to fit into one of the plurality of recesses to lock the pump handle in the retracted position when the pump handle is rotated in a first direction;
• an air channel disposed through the pump handle, the rod, and the piston;
• and
• a pressure relief valve disposed in the air channel and allowing airflow through the air channel and out of the misting device when the pump is operated and air pressure in the fluid chamber is at a maximum pressure.