Cash Acme EB45 Single Union Threaded 3/4 in.The lead free EB45 water pressure regulator features a half cartridge design that offers the performance of a high end, cartridge based valve and the price of a traditional regulator. The valve construction is similar to a traditional regulator in that it retains a separate spring chamber and adjusting screw, but offers the simplicity and maintenance benefits of a cartridge based valve. The EB45 pressure regulator valve comes factory set at 60 psi but