Easy to repair, effectively solve the problem of water leakage.Compatible with 3/4-1inch 975XL and 975XL2 Reduced Pressure Backflow Preventer.Contains: (1) O-ring compatible with relief valve stem, (1) 1 check spring, (1) 2 seal rings, (1) relief valve seal ring, (1) diaphragm, (2) O-rings compatible with check cover, 2 check spring and (1) relief valve spring.Note: Please clean up the debris in the pressure reducing valve during installation to avoid water leakage caused by inability to seal.Colour: as shownMaterial: MetalPackage Contents:1 * Backflow Preventer Repair KitOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.