Cash Acme 1/2 in. Push to Connect Bronze Pressure Regulating ValveCash Acme pressure regulating valves are designed to reduce incoming water pressure to a safe pressure to protect plumbing components. They also helps to prevent pressure surges from entering the household from the main line. High pressure can cause damage to appliances and plumbing. A pressure regulator should be installed after the main line to help protect plumbing. The Cash Acme EB 45 is a half cartridge based pressure reducing and regulating