Air lock in water circulation system of coaches

[@fasilkaruthedth]

Thank you sir for this valuable informative video ❤

[@user-ep8yg3yg3t]

Thank u for uploading the video sir, really informative

[@arunraj-fw2ow]

Informative video bro

[@infoypr1858]

Thanks

[@sanjaybehera2913]

Very good🎉

[@infoypr1858]

👍

[@RamMilanYadav-lw9gc]

Good sir

[@infoypr1858]

☺️

[@sudhakarraju1490]

Good

[@infoypr1858]

Thanks

[@naveengowda.knaveen6124]

❤

[@learnfromsyed]

Amendable working principle ❤

[@infoypr1858]

OK

[@RamMilanYadav-lw9gc]

Sir,economy class sliding door maintenance video

[@anneswarrao2706]

Excellent video sir.❤❤❤

[@infoypr1858]

😊

[@himanshusaxena8639]

Where this valve is located ? In Overhead 30ltr tank ?

[@infoypr1858]

Yes