Tank and nozzle assembly

A tank assembly comprising:

• a tank having a body with a neck;
• and
• a nozzle assembly configured to be coupled to the tank, the nozzle assembly including:
• a valve assembly including a valve body having a first end, a second end, and a first passage extending therebetween, and a valve disposed in the first passage, the valve including a pin and a first biasing member that biases the pin in a closed position;
• and
• a regulator assembly configured to be coupled to the valve assembly, the regulator assembly including a regulator body having a first end, a second end, and a second passage extending therebetween, and a piston assembly disposed in the second passage, the piston assembly including a piston movable between a first position to contact the pin thereby moving the pin to an open position to open the valve and a second position away from the valve such that the pin moves to the closed position closing the valve, the piston being independently movable relative to the valve.