Only one place for the Cline regulator, Cline and assc. Owned by Jim Cline. www.billsroom.com/pcfs/ There are manufacturers of pumps as well, Perry is one of them, somebody else may give you the lowdown on pumps. I havn't any personel experience with them. This regulator is my first, so far I'm happy, even with the $60.00 price tag. Joe