23906-0045 - 1-1/2" EB45 Double Union Threaded Pressure Regulating ValveCash Acme 23906 0045 1 1 2" EB45 Double Union Threaded Pressure Regulating Valve The EB 45 Series is a lead free1 half cartridge based pressure reducing and regulating valve with a bronze body. 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 EB 45 is assembled using modular construction