Assembly replacement help

[Faf]

Hello,
I have pool feed line connected to a hose bib, I believe was not installed properly and therefor is corroded.
There is a copper pipe coming out of the wall and a galvanized (i think) tee connected to it with valves connected to the tee. Both valves and the vacuum breaker are corroded and leaking. Here are some images of the assembly:

https://drive.google.com/open?id=0B_PuNfI-toO0VHlxbFNFQ1NSSjctTzM1SnBzWjBlSk5odFdv
https://drive.google.com/open?id=0B_PuNfI-toO0S0RlX1Q4YzhOR3p1UDhES2o2YlRRTGdUbndn

I have a couple of questions:
1. Where do I even start to uninstall everything. Maybe a stupid question, but I don't see how to uninstall the tee...
2. What should I use to replace the assembly? (all brass, galvanized with bielectric connection?)

Thanks in advance for any help!

 

[Geofd]

that's a worn out pool feed.....
remove it all redo in copper
if you want the highest level of protection at your hose supply
you could install a testable backflow that your state requires when dealing
with possible cross connection between pool water(pool chemicals) and your
water main/public water main...or check with the dept of enviormental protection.....they will tell you what device you can use in any situation

 

[Mr_David]

see photo for disassembly.
Then replace with same but use brass fitting and nipples, not galvanized steel.
You can use and irrigation zone valve with a vacuum breaker, or a better quality testable back flow valve with valves already incorporated with it.
Photos of some examples I found on Google
If you rebuild with same type of vacuum breaker use a ball valve instead of a gate valve












This one has to many valves. 3 valve on one line is a bit redundant

 

[Faf]

Thank you Mr_David and Geofd for the quick replies. This is great help.