Fairview GR-9984 RV Camper LP Propane 2-Stage Automatic Chan
✅ PROS
- True two-stage regulation delivers stable appliance pressure even as tank temp drops
- Automatic changeover with clear indicator window — no more guessing which tank is empty
- Brass body with weather-resistant coating holds up to road grime and rain
❌ CONS
- Pigtail hoses sold separately — adds $20–30 to total install cost
- Indicator window can frost over in sub-freezing conditions, obscuring the red flag
- Mounting bracket bolt holes don't line up perfectly on some RV frames
The Verdict
If you’ve ever been halfway through a shower in an RV park when the water goes icy cold, you know the pain of a dead propane tank. The Fairview GR-9984 aims to end that misery with automatic changeover — and for most buyers, it delivers exactly that. Here’s the full breakdown after digging through 220 ratings and the technical specs.
What’s Actually in the Box
You get the two-stage automatic changeover regulator itself, a mounting bracket, and hardware. That’s it. No pigtail hoses — you’ll need to grab those separately (typically 12-inch or 18-inch lengths depending on your tank setup). The unit is compact at roughly 6 inches across and 4 inches tall, with 1/4-inch NPT female connections on both tank sides and a 3/8-inch flare outlet for your low-pressure line. The brass body has a gray powder-coated finish that resists the corrosion you’d expect from years of road exposure.
Real-World Performance
The two-stage design is the headline feature here. Unlike single-stage regulators that let appliance pressure drift as the tank empties, this maintains a steady 11 inches of water column to your furnace, water heater, and stove. Customers consistently report better flame stability — one reviewer noted, “My oven actually bakes evenly now instead of cycling hot and cold.” That’s the practical benefit of paying for two-stage over a cheap single-stage unit.
The automatic changeover works as advertised. When your primary tank runs dry, the internal mechanism flips to the reserve tank without you touching a valve. The green indicator window shows a red flag when the primary is empty. It’s simple, mechanical, and reliable — no electronics to fail.
What Buyers Consistently Praise
The build quality gets frequent mentions. One camper with a fifth-wheel wrote: “Installed this on my 2021 Grand Design and it fit right in. Solid brass, heavy duty — you can tell it’s not a cheap import.” Multiple reviewers noted the regulator handles cold weather better than OEM units, with fewer pressure drops when temperatures fall below freezing.
The changeover mechanism itself earns high marks for reliability. The internal valve design is straightforward and doesn’t stick — a common failure point on cheaper regulators.
Where It Falls Short
The indicator window is the weak spot. In freezing conditions, moisture can frost over the lens, hiding the red flag. You’ll still know the tank is empty when the furnace sputters, but the convenience factor drops in winter camping.
The mounting bracket also draws complaints. The bolt holes are spaced for a standard RV frame, but several buyers report needing to drill new holes or use a universal adapter plate for older trailers. It’s a five-minute fix with a drill, but worth knowing before you start.
Who Should Buy This
- Weekend campers who are tired of checking tank levels by weight — this ends the guesswork
- Full-time RVers who want steady appliance pressure without babysitting tanks
- Cold-weather campers who need reliable propane delivery when temps drop
- DIY installers comfortable with basic wrench work — no special tools required
Skip it if you only run one tank and don’t need automatic changeover, or if you’re on a tight budget and can tolerate single-stage pressure swings.
FAQ
Q: Will this fit my RV? A: It fits standard 20- or 30-pound vertical tanks with 1/4-inch NPT pigtail connections. Most trailers from 2010 onward will accept it, but measure your existing regulator’s mounting pattern first. Some older frames need bracket modification.
Q: Is two-stage really worth it over single-stage? A: Yes, if you use multiple propane appliances. Single-stage regulators let pressure fluctuate, causing uneven flame and poor furnace performance. Two-stage holds steady pressure until the tank is nearly empty.
Q: How do I know which tank is the primary? A: The regulator is marked with an arrow. The tank connected to the side pointing at the “primary” label drains first. When the red flag appears, swap the empty for a full one and flip the changeover lever back.
The Verdict
Buy it if you want dependable automatic changeover with solid brass construction and stable two-stage pressure. It’s a direct upgrade over most OEM regulators and will outlast cheap single-stage alternatives.
Skip it if you’re a fair-weather weekend camper who doesn’t mind manual tank switching, or if you’re not prepared to buy pigtail hoses and possibly adapt the mounting bracket.
Rating: 4.2/5 — The Fairview GR-9984 does its primary job excellently. The frost-prone indicator and bracket fitment quirks keep it from a perfect score, but for the price, it’s a reliable upgrade that solves a genuinely annoying RV problem.
Where to Buy
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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.