One of many on-the-drawing-board dilemmas for hydraulic system designers is whether to install a more expensive ball valve in the pump inlet line, a cheaper butterfly valve, or no valve at all.
At the root of this dilemma is the negative effect of turbulence in the pump intake line. The argument for using a ball valve as an intake line … Read more
A recent arrival on ‘Planet Brendan’ who works for Bosch Rexoth’s ‘Large Hydraulic Drives’ division in Sweden (a.k.a. Hagglunds division) wrote me this after reading my “6 Hydraulic Mistakes….” report:
“I would have liked more information on why you shouldn’t have filters on the drain line on piston pumps. We actually use that solution in our drive units and we … Read more
Gas-charged accumulators are a common feature of modern hydraulic systems. They carry out numerous functions. These include energy storage and reserve, leakage and thermal compensation, shock absorption and energy recovery. But while accumulators present a number of advantages in hydraulic system operation, and can provide many years of trouble-free service, they are a maintenance item.
For example, the correct gas … Read more