2007-06-12 17:45:09 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
It's simply a spring acting on a valve. The spring tension is pre-set to the required pressure and, if this pressure is exceeded, the pressure acting on the area of the underside of the valve plug will cause it to lift against the spring, releasing the excess pressure back to the hydraulic fluid reservoir. When the pressure is normal again, the spring re-seats the valve.
2007-06-13 07:08:09 · answer #1 · answered by Norrie 7 · 0⤊ 0⤋
A port relief valve is spring loaded valve that allows fluid to escape when the pressure gets too high. Normally, the escaping fluid in hydraulic systems is piped past the equipment to the holding tank for reuse. (In pneumatics, it is vented to air.) It is not a regulator in that it is not precise. It would be set below the safety limit and above the operating pressure of the system to protect the pump and other equipment.
http://www.plastomatic.com/2port3port.html
2007-06-13 01:38:01 · answer #2 · answered by Mike1942f 7 · 0⤊ 1⤋