OEM-quality two-stage combination propane regulator from Cavagna Group — a leading factory-installed RV propane regulator supplier. 1/4" FNPT inlet x 3/8" FNPT outlet. Stage 1 reduces to 10 psi; Stage 2 maintains 11" WC. 160,000 BTU/hr. For single vertical or horizontal RV tank. No shut-off valve. RVIA vent covers included.
The Cavagna 52-A-490-0018 is a two-stage combination propane regulator from Cavagna Group (also marketed under the Kosan brand) — one of the world's leading manufacturers of propane regulators and valves, supplying many major RV manufacturers as an OEM component. This compact two-stage design is widely used as a factory-installed unit and as a direct OEM replacement in RVs equipped with single-tank propane systems using a vertical or horizontal tank configuration.
As a combination (two-stage) regulator, the first stage reduces the variable cylinder outlet pressure to 10 psi, and the second stage further reduces that to a stable 11" WC — the standard delivery pressure for all RV propane appliances. The compact form factor fits in tight regulator compartments where larger designs won't. No built-in shut-off valve — gas is shut off at the tank. RVIA-required plastic vent covers are included.
• 1x Cavagna 52-A-490-0018 two-stage regulator • RVIA plastic vent covers • Hose not included Cavagna variant with POL inlet and shut-off valve: • 52-A-490-0022 — POL inlet, 3/8" FNPT outlet, shut-off valve, excess flow device Kit version with RVIA vent covers boxed: • 52-A-490-0008B — Same regulator, horizontal vent, kit packaging
Founded in 1949 in Northern Italy, Cavagna Group is one of the world's largest manufacturers of propane regulators, valves, and fittings — supplying RV manufacturers, propane distributors, and gas equipment companies in over 145 countries. Their products meet AGA, ASME, CGA, IAS, and UL standards per ANSI and NFPA requirements. Many RV owners replacing an OEM propane regulator will find a Cavagna unit already installed — the 52-A-490-0018 is the standard compact two-stage unit commonly found as original equipment.
All two-stage, 1/4" inlet x 3/8" outlet, 11" WC, 160K BTU — key differences: • 52-A-490-0018 — Compact, 1/4" FNPT inlet, no shut-off valve (this item) • 52-A-490-0008B — Same, horizontal vent, kit-boxed with RVIA covers • 52-A-490-0019 — With shut-off valve • 52-A-490-0022 — POL inlet, shut-off valve, excess flow device If your existing RV regulator is Cavagna, match the part number suffix to your unit's features (shut-off valve presence, inlet type) when ordering a replacement.