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  • Users: jscotty29
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  1. jscotty29

    Accumulator Precharge Pressure

    i'm designing a very basic form of a pneumatic system which involves a telescoping cylinder with a pressurized air chamber acting as an accumulator. what i'm having trouble figuring out is how much pressure to charge the accumulator with to extend the cylinder and hold it. i want to keep the...
  2. jscotty29

    tripod stability calculation?

    can anyone help me calculate the force required to tip over a tripod. i have a pole that is supported by a tripod and i need to determine how much wind force is required to tip the tripod over. thanks ahead of time.
  3. jscotty29

    Position Sensors

    we've designed a cylinder that has a position sensor on the extend side. the sensor uses a magnetic field to engage the switch. we tested the cylinder and got some screwy results. after some extensive analysis, we finally realized, our rod is stainless steel. Oops. my question is, does...
  4. jscotty29

    Another Flow rate calculation?

    The flow rate setting on my DCV is 30 GPM. The DCV controls a 4 stage telescoping cylinder. I'm trying to determine the discharge flow coming from the rod end when the cylinder is extending. i thought it was a simple velocity/cross sectional area. but i'm getting a discharge value that...
  5. jscotty29

    pressure relief valve setting

    I have a hydraulic cylinder with an accumulator that is pressurized with nitrogen. Does anyone know what the appropriate setting for a relief valve that is going in the accumulator. i know the accepted setting for hydraulic relief valves are around 10% over MAWP. Do pneumatic relief valves...
  6. jscotty29

    pressure relief valve setting

    i'm trying to determine the correct setting for my Direct Acting Pressure Relief Valve. this is a hydraulic system which i know the accepted setting is 10% over MAWP. However, the valve in question is in an accumulator pressurized with nitrogen. i need to know if pneumatic relief valves have...

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