Backflow Preventer Repair Kit For Zurn Wilkins 375 Series Including 375XL And 375ST One Half Inch And Three Quarters Inch Models All In One Full Internals Replacement Kit With Check Assemblies O Rings And Spring

All-in-one RK34-375 Backflow Repair Kit for 375 Series
✔️ 1 kit fits 1/2in and 3/4in models; complete internals included

This premium RK34-375 repair kit is designed to restore 375, 375XL, and 375ST backflow preventers. It includes all-in-one internals, check assemblies, O-rings, and spring for 1/2in and 3/4in valve models, making maintenance quick and reliable.

✅ Check Assembly #1 & #2 (pre-installed)
✅ Complete relief valve internals
✅ 6 premium O-rings (inlet, outlet, sleeve, relief valve seat, stem & cover)
✅ Relief valve spring and lubricant
✅ ABS, rubber & stainless steel components for durability

💡 What is a backflow preventer repair kit used for in plumbing systems?

This handy kit helps restore valve function quickly without replacing the whole unit. - Restores check and relief valve performance in 1/2in and 3/4in models - Includes check assemblies, O-rings, and spring for durable seals - Simple, tool-free installation for DIYers and pros - Extends service life and reduces repair costs