I use one of these. http://www.branick.com/core/products_brake_bleeder.php I think Moog is made my Branic. I didn't buy any adapters from them. I just use an old MC cap and drill and tap it for a quick connector. I have known guys that had the check valve type bleeders, but either they they didn't know what they were doing or something went wrong. I finally blew the air out of their system with my Branick so they got a hard pedal. I think a Branick is almost a must with hydrovac.