Hydraulics and Pneumatics Quiz 2 with Complete Solutions Graded A+

Hydraulics and Pneumatics Quiz 2 with Complete Solutions Graded A+ The primary purpose of a relief valve is to _____ system pressure. (HL4 1-1) - Answer-limit When using a needle valve to control speed, excess pump flow is directed over the _____ valve. (HL4 1-2) - Answer-relief When operating in a flow control circuit, the speed of the actuator _____ when the flow through the relief valve increases. (HL4 1-3) - Answer-decreases The two types of relief valves are _____ and pilot-operated. (HL4 1-4) - Answer-direct-acting Turning the adjustment knob on a relief valve changes the compression on the _____. (HL4 1-5) - Answer-spring The _____ pressure is the point where the relief valve starts to open. (HL4 1-6) - Answer-cracking The check valve is a _____ way directional control valve. (HL4 2-1) - Answer-one Check valves are used to hold prime, avoid pump reversal, _____, and provide back pressure. (HL4 2-2) - Answer-bipass The direction through a check valve that allows flow is called _____ direction. (HL4 2-3) - Answer-freeflow The three types of check valves used in hydraulic systems are the _____, _____, and _____ types. (HL4 2-4) - Answer-spring, ball, poppet