PSI Control Circuit and Hydraulic Relief Valve Operation

Pressure reducing valves controls what?

• DCVs

• Systems

• Cylinders

• Accumulator

Sequence Valves

• block flow

• block backwards flow

• build pressure

• acts like a flow meter

About how much of a pressure difference is needed to open a pilot-operated relief valve to full flow?

• 37 psi

• 25 psi

• 5 psi

• 41 psi

What is an advantage of a pilot-operated relief valve over a direct-acting relief valve?

• There is none

• Shorter pressure span from cracking to fully open

• All of these

• Longer pressure span

The pressure control valve's primary function is to ensure worker safety.

• Remote pressure control Valve

• Sequence Valve

• Pilot-Operated Relief Valves 

• valve