Hydraulic hose is ... of the fluid within the hose. A hose with an oversized I.D. will result in sluggish system performance, while an undersized I.D. can cause excessive pressure drops, leaks, and ...

In general, however, hose fittings correspond to either hydraulic or pneumatic systems ... www.plumbingsupply.com provides an excellent overview on pipe thread sizing. Below is a chart depicting ...