# \#hydraulic

**URL:** https://forumautomation.com/tag/hydraulic/84.md

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## [Hydraulic Accumulator - Temperature Effect on Nitrogen Pre-Charge](https://forumautomation.com/t/hydraulic-accumulator-temperature-effect-on-nitrogen-pre-charge/11431)

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**Author:** [@dstuart82](https://forumautomation.com/u/dstuart82)\
**Replies:** 0\
**Last updated:** [August 24, 2023, 2:43pm UTC](https://forumautomation.com/t/hydraulic-accumulator-temperature-effect-on-nitrogen-pre-charge/11431 "2023-08-24T14:43:24Z")

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Good Afternoon, I am currently studying for a degree in Instrumentation, Measurement & Control. As part of my learning, I have been askedto write a paper which discusses the effect (if any) that outside temperature has o…

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## [How do we read a valve symbol?](https://forumautomation.com/t/how-do-we-read-a-valve-symbol/10920)

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**Author:** [@Instrument\_Engineer](https://forumautomation.com/u/Instrument_Engineer)\
**Replies:** 0\
**Last updated:** [March 2, 2023, 3:52am UTC](https://forumautomation.com/t/how-do-we-read-a-valve-symbol/10920 "2023-03-02T03:52:34Z")

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To direct oil into various hydraulic system circuits, directional control valves are employed. The first factors to take into account are the maximum flow capacity and the pressure drop through the valve. Directional …