Environmental control has become a major issue with heavy equipment operators. Specific procedures have to be followed whenever an an oil spill occurs. Remediation can be costly and sometimes come with a fine.
I was approached by a company that services heavy equipment on site. When changing out hydraulic lines, they have to drain the hydraulic reservoirs to prevent fluid from pouring out when they make a disconnect. This consumes a lot of the mechanic’s time and presents the temptation to take shortcuts resulting in spillage.
Temporarily installing a Model 800001 E-vac onto the vent port of the hydraulic reservoir, they were able to impart just enough vacuum to hold the fluid in while they disconnected the lines and changed them out. This provided a quicker fool-proof method for their field service techs.