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 … Read more
What You Need to Know About Fluid Injection Injuries
**Editor’s note: This post is one to share with your friends and colleagues.
A webinar presented by the International Fluid Power Society on the prevention and management of fluid injection injuries cites a study by Snarski and Birkhahn, two emergency department doctors at the New York Methodist Hospital. And it contains some sobering statistics:
Fluid injection injuries are relatively rare … Read more
The Official Word On Hydraulic Pump Suction Strainers
While doing some fact checking for a consulting job, I had cause to review Australian Standard AS 2671; Hydraulic Fluid Power-General Requirements for Systems. This Australian Standard is basically the International Standard, ISO 4413 with some amendments based on the local advisory committee’s input.
One of these amendments has to do with pump suction strainers. Section 8.3.3 of ISO 4413:2010, … Read more