Red Seal Plumbing Practice Exam

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What device replaces the pressure tank and pressure switch on a private water supply system?

Pressure valve
Circulator
Mascontrol
Expansion tank

The correct answer is: Mascontrol

A Mascontrol replaces the pressure tank and pressure switch on a private water supply system because it has a built-in electronic pressure sensor that controls the pump automatically based on water usage. An expansion tank is used to regulate pressure changes within the system and it cannot replace the pressure tank or switch. A pressure valve is designed to regulate the water pressure in a system and does not replace the other components mentioned. A circulator is used to move water around in a heating or cooling system and does not have the same function as a Mascontrol.