3470AB LF Tankless Water Heater Valve Kit
Engineered for hassle-free integration with PEX F-1960 (expansion) piping, the 3470AB LF Valve Kit delivers NSF/ANSI/CAN 61/372 compliance and a rugged 600# WOG rating, ensuring leak-proof performance in residential and light commercial tankless water heaters. With virgin PTFE seats and a full-port design, this kit simplifies installations while meeting stringent safety standards for potable water and hydronic heating.
Key Features & Benefits
✔️ PEX F-1960 x FNPT Hybrid Connections – Direct compatibility with expansion PEX systems, eliminating transition fittings and ensuring secure, tool-driven connections.
✔️ 200K BTU/hr Relief Valve (RAB) – Precision overpressure protection tailored for residential and small commercial tankless units.
✔️ Full-Port PTFE Sealed Design – Maximizes flow efficiency and guarantees bubble-tight sealing, even at 600 PSI non-shock pressures.
✔️ AB1953 & NSF Dual Certification – Meets California’s AB1953 lead-free mandates and North American potable water safety requirements.
✔️ Integrated Maintenance Ports – Capped purge port and hose-end drain streamline air removal and system flushing.
Technical Specifications
- Connections: 3/4" PEX F-1960 (expansion) x FNPT (ASME B1.20.1-NPT)
- Relief Valve: 200K BTU/hr (3470RAB)
- Materials: Lead-free brass, Virgin PTFE seats
- Pressure Rating: 600 PSI WOG (non-shock)
- Standards: AB1953, NSF/ANSI/CAN 61, NSF-372
Why Choose the 3470AB LF Kit?
- Expansion PEX Expertise: Ideal for modern plumbing using F-1960 systems, ensuring leak-resistant joints without crimp rings.
- Durability Under Pressure: Blow-out-proof stem and adjustable packing withstand frequent use in high-demand environments.
- Zero Contamination Risk: Lead-free construction and PTFE seats ensure safe drinking water compliance.
Ideal Applications
- Residential tankless water heaters
- Expansion PEX plumbing retrofits
- Recirculating hot water systems
- Low-BTU commercial hydronic heating
- Solar thermal setups with PEX-al-PEX piping
Built for Reliability & Compliance
✅ 600 PSI Industrial Strength – Handles pressure surges in demanding residential/commercial systems.
✅ ¼-Turn Smooth Operation – Low-torque control for effortless adjustments.
✅ Pro-Approved Design – Trusted by installers for code adherence and long-term performance.
Engineered for Expansion PEX Systems – Reduces installation complexity while future-proofing modern plumbing projects.
PEX F-1960 | Lead-Free | Code-Compliant