New tank has 1 large over flow with 2 drains and 2 returns in it. Don't know what everyone uses now a days for drain stand pipes or are Durso stand pipes still the main use?
ACE Hardware at Broadway and Rural has gate valves for like $14 (1.25"). Also, any ACE will order them for you with a short wait time.
Gate valves are almost a must for this application IME!