Hi, PHANANHTUAN

Welcome to RE,

Quote Originally Posted by PHANANHTUAN View Post
Re: What's PM3 valve? i can't understand it, help me ! please.
thanks !
your post is in wrong thread but try here:

http://www.ra.danfoss.com/ra/Product...-5972d837cf1a}
http://www.ra.danfoss.com/ra/Product...-5972d837cf1a}
http://www.ra.danfoss.com/TechnicalI...CA27f172A5.jpg

but you can search complete site to learn something more
http://www.danfoss.com/Products/Categories/
under Refrigeration and A/C
Hope this will help.

Best regards, Josip