The Apollo RP4A 2" Complete Internals Kit (4A-008-10) supplies genuine replacement components to service one 2" RP4A/RPLF4A reduced-pressure backflow preventer. Designed for field repairs, the kit restores check assemblies, relief valve performance, and sealing surfaces using factory parts so you can return the unit to reliable operation. Complete rebuild parts: first and second modular check assemblies, reversible silicone seat discs, and check seat O‑rings for both checks. Relief valve service: relief valve module with diaphragm, RV seat, RV seat O‑ring, RV bushing face O‑ring, and sensing passage O‑ring. Seals & consumables: cap O‑rings, body O‑ring, RV stem O‑ring, and approved O‑ring lubricant to assist assembly. Genuine Apollo components: factory parts matched to RP4A/4A-200 series for correct fit and performance; made in the USA. Compatibility: intended for 2" RP4A/4A-200 reduced-pressure (RPZ) backflow preventers; fits both standard and lead-free RP4A models. Warranty & service: Apollo RP4A assemblies carry a five-year factory warranty; follow installation and maintenance guidelines to preserve coverage. Use this kit when performing a full internal service on a single 2" RP4A unit. For safe, code-compliant repairs have work performed by a licensed technician and follow the Apollo service manual and local testing requirements. Retain proof of purchase for warranty claims and consult the manufacturer parts breakdown for part-level references and diagrams.
