Certified by ASSE & IAPMO and meets ALL requirements. Approved Febco 765 Repair Kit for Febco 765 PVB. Febco® has issued an erroneous warning against the use of Blue Heron replacement products because of the direct competition to the OEM Febco® 765 product. This is a replacement for the Febco® 765 Repair Kit - 1 Inch Pressure Vacuum Breaker Backflow Device. It is after-market, and it is more durable and less expensive than the OEM Febco 765 Repair Kit. 1. Rinse all Febco 765 parts with clean water prior to reassembly. 2. Do not use any grease, oil, or solvents on Febco 765 Repair Kit. 3. Do not force Febco 765 parts as they should fit together freely. Excess force may cause damage and render the Febco 765 assembly inoperable. 4. Carefully inspect seals and seating surfaces of Febco 765 for debris or damage. 5. After servicing, repressurize the Febco 765 assembly and test to ensure proper operation. NOTE: Turn On Water Slowly to Re-pressurize. Febco® is a registered trademark of Watts Water Technologies, Inc.