Pmatics Flashcards
The energy of compressed air in the lines can cause severe whiplash when one end of the hose is let free. This can be over come with an _________________ ___________________. __________________ that’s tops flow through the line is excessive flow occurs
Excess flow valve
Vertical cylinders must be let down or mechanically blocked to prevent movement before performing any work on or around them
T
F
True
Piping should be sized to minimize ____________ _______________ by being large enough without as many beds as possible
Pressure drop
The purpose of a _____________ in a pneumatic system is to lower the dupoint so that it does not cause problems in the system
Dryer
The cyclone separator can be used anywhere in the system that moisture might fall out.
T
F
True
All receivers are used to store compressed air to take up fluctuations in demand and allow system pressure to vary within reasonable limits
T
F
True
The purpose of the ____________ _____________ _______________ is to bleed off excess system pressure before it becomes to extreme
Safety relief valve
Leaks waste energy from confession which increases expenses while reducing the performance of air tools and equipment.
T
F
True
The most compressed air systems run for long distances, this allows the air to cool below its ___________ ___________ which causes moisture to fall out of the air stream
Dew point
Flow control valves control the volume and therefore the speed of the actuator.
T
F
True
Pilot operation refers to valves that are operated with air pressure. Internally piloted means the air within the valve is used to preform the shifting function.
T
F
True
The 3/2 can be used if the air needs to be released when the valve is closed.
A typical application is the operation of a _______________ acting cylinder
Single
A _____________ acting cylinder is a common application of a 4/2 valve
Double
The _______________ ______________ is used to automatically select the higher of the two pressure sources to supply a pneumatic signal
Shuttle valve
One of the first items to check in a malfunctioning system is weather there is a supply of air at sufficient flow and pressure
True
