A:
Isn't the LG 50PV450 a 50" Plasma? If it is,then yes it should work. It come with MULTIPLE hardware components to mount any flat screen TV ranging from 32"s to 70"s. I have 3 of the Rocketfish tilting wall mounts and I have successfully mounted a:
1:) Samsung 51" Class 1080p 600Hz 3D Plasma HDTV
2:) Vizio 32" LED HDTV
3:) Vizio 32" LCD DTV
The kit had all the necessary parts to mount each TV flawlessly,so yes, after a litle research on Google this mount is compatible with your Tv as well!