push/pull hydraulic unit

Is there a SMALL push/pull electric hydraulic unit that could be hooked up to an ATV 12v. electrical system to make a small dump?
Steve
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For ATV sized things, consider a 12 VDC linear actuator. http://www.surpluscenter.com/sort.asp?catname=electric&keywordLD
SteveB wrote:

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Check a wrecking yard for convertible top mechanism. Some are hydraulic, some may be linear actuator. Rather low pressure, but still might be good for you. ~300 psi IIRC.
DAve
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