Apollo RP4A 2" Complete Internals Kit (4A-008-10)

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.