Before you start

• I searched existing issues and this has not already been reported.
• I am using the latest version of the mod for my Minecraft version.

What happened?

我在仅仅包含机械动力和本模组的游戏中测试竖直传输流体，发生了崩溃。下图为崩溃时我正在建造的部分。

I tested vertical fluid transport in a game that only included Create and this mod, and it crashed. The picture below shows the part I was building when it crashed.

crash-2026-09-16_13.31.07-client.txt

Steps to reproduce

1, put a creative fluid tank
2, put a horizontol pipe
3, put a vertical pump and some pipes

Pipes n Physics version

3.2.1

Create version

6.0.10

Minecraft + NeoForge version

1.21.1 neoforge 21.1.250

Other relevant mods

Logs / crash report