Help in machine room

[blackwolf]

I'm in the machine room, and there's a door that has a "crude lock" preventing me from passing it. And there's a valve that's stuck that I can't turn.

Any hints of what I'm supposed to do to get through the door?

[RedHeadLover]

Spoiler below!

find the pipe nearby and drag it to the lock, then grab it and force the lock open with a quick sideways movement of the pipe