*PLUMBERSSTOCK EXPERT* responded:
No, the Febco 905212 Bonnet Poppet Repair Kit will not fit. For Febco 765 3/4" Pressurized Vacuum Breaker, you will need the Febco 905211 Bonnet Repair Kit. Check out the link and order it now by clicking Add To Cart then fill in the required fields and you're good to go! If desired, you may view this Maintenance Manual. Page 3 holds information on other parts that you might need. Should you have further questions, please let us know. Thank you for shopping with plumbersstock.com – the perfect site to find high-quality products at low, low prices!