A calorie is a measure of energy, just as a pound is a measure of weight and a mile is a measure of distance. So the amount of energy you exert in doing an activity is measured by the calories burn rate.
A water pressure regulator is a plumbing valve that reduces the water pressure coming from the main water line into the house.o determine if you need a water pressure regulator test the water pressure of the main water supply to your house. You can buy a pressure gauge for a local hardware or home improvement store.
Pressure Regulators in Operation. A pressure regulator is comprised of three functional elements. ) 1  A pressure reducing or restrictive element. Often this is a spring loaded poppet valve. ) 2  A sensing element. Typically a diaphragm or piston. )  A reference force element.