What is a hot box in plumbing?

Regarding this, what is a water hot box?

(HPS) provides Hot Box water equipment enclosures for the irrigation, plumbing, fire, water and utility markets. Hot Box is the leading brand of backflow equipment enclosures across North America.

Similarly, how does a reduced pressure backflow preventer work? Backflow prevention systems are devices installed onto a pipe that only allow water to flow in one direction. Think of it as a one-way gate that allows water from the city's public water supply to flow into your home's piping but stops water if and when it ever tries to flow backwards into the main water supply.

Regarding this, what is a hot box used for?

A hot box is used to continue cooking food after the food has been partially cooked on a stove. This is done by insulating a container and placing the pot of food in the container to be sealed up. Hot boxes can be purchased, but they are simple to make.

How do you use a hot box?

Installation:

1. Select a suitable location for your Hotbox.
2. Set it up as high as possible.
3. Fill up the cup to the level indicator line inside it - this will allow the HotBox to run for around 150 hours.
4. Hang the HotBox heater from your ceiling using a chain.
5. Place the cup on the HotBox heating plate.