
The Nozzle can be found in the firetruck. You can pick it up by reaching for it and pressing the trigger button on your controller. With the Nozzle in hand, u can use the trigger button to spray water from it. The water pressure starts low but can be adjusted by moving the joystick on your controller left and right. While doing this, you can also see the ring on the front of the Nozzle moving.
When you have the physical hardware Nozzle in your hand, you can use the handle on the top of the Nozzle to spray water by pulling it towards you. The water pressure can be adjusted by sliding the front of the Nozzle left and right.
The physical hardware Nozzle also has a teleport button on the handle. This can be used to move around the simulation.