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Recent content by hydralph

  1. hydralph

    losses from valves/bends

    Paul, <br> Best bet is to get some reference books from the libary or from a leading hydraulic manufactor. Parker Hannifin Corp.,<br> has a number of hand books available, (parker.com.).<br> I have bulletin # 0222-b2, Analyzing Hydraulic Systems.<br> I'm not sure if mine is still available...
  2. hydralph

    Design information

    ranjan,<br> not sure what a tracer valve is, could you explan its function?<br> thanks,<br> Ralph
  3. hydralph

    losses from valves/bends

    Paul,<br> I beleive will will need more info. ( hydraulic/ air )<br> Flow rate (GPM/LPM), fluid viscosity and<br> specific gravity <br> <br> Example:<br> Assume 50 GPM is flowing through 1 1/4" schedule 80 pipe. Viscosity is 100SUS and specific gravity is .865.<br> pressure drop through 90 deg...
  4. hydralph

    PROPORTIONAL PRESSURE WITH ADJUSTABLE SUPPLY PRESSURE.

    Huffcm,<br> I can't understand why you would want a valve to follow the pressure you already have. You will have to explain it to me. The Hussco valve is a proportional pressure reducing valve used to operate larger prop. valves and pumps. The set pressures are comon for all manufactors.<br>...
  5. hydralph

    Spiral wound channel

    Craig,<br> Pressure drop or delta P, depends on the fluid flow ( in GPM ) ,Friction factor, Density and lenth. If you look at any <br> good fluid power hand book the formula should be their.<br> I have it, but can't type it accurately.<br> Ofcorse, you can always put a gauge or transducer on...
  6. hydralph

    Swing Check Valve

    Manian,<br> All manufactors publish the cracking pressure for their style of valve. Velocity is not the a factor, although you do need flow to create pressure. <br> Because all valves are made different, you should contact the manufactor to answer your question.

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