One of our members who works for a hydraulic seal manufacturer wrote me this recently:
“We receive many seal-failure complaints. And while most of these failures can be attributed to installation, assembly, poor hardware preparation or even misuse of the product, we always try to educate our customers as to the cause of failure and provide them guidance to prevent … Read more
The term pilot ratio refers to the ratio of two, discrete areas of a piston, spool or poppet on which opposing pressures act. The pilot area, on which pilot-pressure acts, is always the larger of the two areas. Working or system pressure acts on the smaller, opposing area. This means a relatively small pilot pressure can overcome a much larger …