English to French Other Mechanics / Mech Engineering

Hi all,

I am translating some golf machinery material...

Here it's about a sprayer, and I have this segment without much context

LT & Hose Disconnect Relay

Please see picture

https://i.postimg.cc/q7KRZdxK/LT.jpg


My problem here of course is the meaning of LT...


Thanks in advance for your help