Before the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) was created and implemented, there were many different regulations on hazard classification in use in different countries, resulting in multiple standards, classifications and labels for the same hazard.
Pneumatics Vs Hydraulics. The pros and cons of each system. Pneumatics offer a very clean system, suitable for food manufacturing processes and other processes which require no risk of contamination. Hydraulics is generally not used in these environments due to the risk of hydraulic oil leaks from faulty valves, seals or burst hoses.
Fluid power is not all good news. Hydraulic systems can leak oil at. connections and seals. Hydraulic power is not as easy to generate as. electric power and requires a heavy, noisy pump. Hydraulic ï¬uids can. cavitate and retain air resulting in spongy performance and loss of preci-. sion. Hydraulic and pneumatic systems become contaminated with par-. ticles and require careful ï¬ltering.