A strainer should be installed before an RPZ backflow preventer to remove any foreign matter that could cause the preventer to malfunction.

A typical steam heating system operates at temperatures above ___°F.

Radiation has a major impact on all cooling systems.

Gate valves are commonly used as feedwater stop valves.

A combination heating system uses all the components of a hot water heating system and a steam heating system.

Radiation has a major impact on all cooling systems.

Larger boilers are designed to use mechanical draft, which can be controlled more precisely and results in higher combustion efficiency.

Gate valves are commonly used as feedwater stop valves.

Improper feedwater treatment is probably the largest direct cause of boiler failure.

A ___ should always start up in low fire and shut down in low fire.