Int. Pneumatics LAP 1- DCV Applications

A pneumatic cam-operated 3/2 valve used with a cylinder in a 2-speed application slows the cylinder by _______________________.

• Diverting extra air to atmosphere

• Switching extra air back to the air compressor

• Switching to restrict cylinder exhaust flow

• Blocking flow

Applications where there is rick of explosion from electrical limit switches could safely substitute _____________________

• Pressure switches

• External shock absorbers

• Pneumatic cam operated valves

• None of the answers are correct

The proper cam-operated DCV to use in a pneumatic clamp circuit that uses a single acting cylinder is the _________________

• 2/2 normally closed (non-passing)

• 2/2 normally opened (passing)

• 3/2 normally closed (non-passing)

• 3/2 normally opened (passing)

• 4/2

The deceleration method used to slow pneumatic cylinders by switching to a slower flow control speed is _________________

• 2-speed control with a cam valve

• Power braking

• External shock absorbers

• None of the answers are correct, this is not attempted

Cam-operated pneumatic valves are actuated by ______________

• Air

• Levers

• Solenoids

• Machine Movement

Two way-valves have ______________________

• One port

• Two ports

• Three ports

• four ports

It require (s) ______________ turn (s) of a gate valve’s handwheel to close the valve

• ¼

• ½

• 1

• many