# Definition of "Pressure Sample Type Internal, back pressure"

**URL:** <https://forumautomation.com/t/definition-of-pressure-sample-type-internal-back-pressure/2732>\
**Category:** Valves\
**Tags:** valve, controlvalve\
**Created:** [November 28, 2017, 6:35am UTC](https://forumautomation.com/t/definition-of-pressure-sample-type-internal-back-pressure/2732 "2017-11-28T06:35:49Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Qulu\_Quliyev](https://forumautomation.com/letter_avatar_proxy/v4/letter/q/dbc845/32.png) [@Qulu\_Quliyev](https://forumautomation.com/u/Qulu_Quliyev)\
**Post date:** [November 28, 2017, 6:35am UTC](https://forumautomation.com/t/definition-of-pressure-sample-type-internal-back-pressure/2732/1 "2017-11-28T06:35:49Z")

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Dear All, I found the following definition in the valve datasheet “Pressure Sample Type Internal, back pressure”, but I don’t have clear idea what does it mean. Is there anyone who has clear explanation about it? Best Regards, Qulu Quliyev