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Various valves and fittings are required for the safe and proper working of a boiler . Those attached directly to the pressure parts of the boiler are referred to as the boiler mountings. Minimum requirements for boiler mountings: 1) two safety valves; 2) one steam stop valve; 3) two independent feed check valves; 4) two water gauge or equivalent; 5) one pressure gauge; 6) one salinometer valve or cock; 7) one blowdown/scum v/v; 8) one low level fuel shut off device and alarm

Related Terms

ABMA

American Boiler Manufacturers Association.

RETURN-STEAM CONDENSATE

That steam produced by a boiler which returns to the boiler after it has condensed.

ASME SECTION VII SUBSECTION C6

Operation of boiler auxiliaries.

BYPASS VALVE

A valve mechanism that assures system fluid flow when a preselected differential pressure across is exceeded; the valve allows all or part of the flow to bypass the filter element.

ASME SECTION VII SUBSECTION C4

Prevention of direct causes of boiler failure.

ASME SECTION VII SUBSECTION C2

Operating and maintaining boiler appliances.

SADDLE VALVE

Valve body shaped so it may be silver brazed or clamped onto a refrigerant tubing surface.(TAP-A-LINE)

SERVICE VALVE

Manually operated valve mounted on refrigerating systems used for service operation.

POSITIVE CRANKCASE VENTILATION (PCV)

System for removing blow-by gases from the crankcase and returning them through the intake manifold to the combustion chamber where the recirculated hydrocarbons are burned. A PCV valve controls the flow of gases from the crankcase to reduce hydrocarbon emissions.

SOLENOID VALVE

Electromagnet with a moving core. It serves as a valve or operates a valve.
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