Series 3000SE Double Check Detector Assembly is ideal for space restricted retrofit installations. It's long life 300 Series stainless steel housing, along with the cartridge check assembly substantially reduces the need to service or repair the assembly. This model is 100% lead free through the waterway. The 3000SE provides positive drip-tight closure against the reverse flow of non-potable liquids caused by a cross-connection. It is designed for use in irrigation system, fire protection systems and other systems requiring non-health hazard protection. Maximum Working Pressure: 175psi (12.06 bar).