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.

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

In a scotch marine boiler, the gases of combustion pass through tubes that are surrounded by water.

The National Fire Protection Association (NFPA) is a federal government agency established in 1970 to control and abate pollution in the areas of air, water, solid waste, pesticides, radiation, and toxic substances.