# Filter Pipes by Diameter values

**URL:** <https://forum.dynamobim.com/t/filter-pipes-by-diameter-values/4026>\
**Category:** Packages\
**Created:** [May 17, 2016, 9:33am UTC](https://forum.dynamobim.com/t/filter-pipes-by-diameter-values/4026 "2016-05-17T09:33:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Hoc\_Em](https://avatars.discourse-cdn.com/v4/letter/h/82dd89/32.png) [@Hoc\_Em](https://forum.dynamobim.com/u/Hoc_Em)\
**Post date:** [May 17, 2016, 9:33am UTC](https://forum.dynamobim.com/t/filter-pipes-by-diameter-values/4026/1 "2016-05-17T09:33:36Z")

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Could anyone please explain why I cannot filter pipes by diameter values. The Nodes “Filter Element List by Parameter Value” and “Filter Element List by Type Parameter Value” are taken from Bakery package.

[AAA](http://dynamobim.org/wp-content/uploads/forum-assets/caominhtu2201gmail-com/05/17/AAA.dyn)

![Capture](http://dynamobim.org/wp-content/uploads/forum-assets/caominhtu2201gmail-com/05/17/Capture1.jpg)

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**Author:** ![Kulkul](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/kulkul/32/49801_2.png) [@Kulkul](https://forum.dynamobim.com/u/Kulkul)\
**Post date:** [May 17, 2016, 11:56am UTC](https://forum.dynamobim.com/t/filter-pipes-by-diameter-values/4026/2 "2016-05-17T11:56:45Z")

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Hi HOC,

I guess its because of Dynamo uses feet. One of the way is to use standard get parameter node then convert units according to your revit.

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**Author:** ![Kulkul](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/kulkul/32/49801_2.png) [@Kulkul](https://forum.dynamobim.com/u/Kulkul)\
**Post date:** [May 17, 2016, 2:48pm UTC](https://forum.dynamobim.com/t/filter-pipes-by-diameter-values/4026/3 "2016-05-17T14:48:41Z")

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Option-1:

 ![Untitled](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/2X/d/de9828b669f7f6b14f7ead923a63bccf2b4b77a1.png)

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Option-2 Modify custom parameter:

 ![Untitled44](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/2X/6/632e88cf7b43a560df8b77c6766abcd5fa91ab92.png)

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**Author:** ![Hoc\_Em](https://avatars.discourse-cdn.com/v4/letter/h/82dd89/32.png) [@Hoc\_Em](https://forum.dynamobim.com/u/Hoc_Em)\
**Post date:** [May 22, 2016, 3:41am UTC](https://forum.dynamobim.com/t/filter-pipes-by-diameter-values/4026/4 "2016-05-22T03:41:10Z")

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Thank you, Kulkul, for your valuable answer.