The 9 Best Rv Gravity Water Fill Caps (2022 reviews)

Compared with other caps in this category, the Valterra Rv Gravity Water Fill Cap has a design with broader appeal. The Valterra rv gravity water fill cap allows for a perfect fit, fits perfectly and it looks like an original. It has a 1/2" air vent for faster fill rates. And, the cap is durable and it is designed for a great price.

Above all, the valterra rv gravity water fill cap fits a 3.5" cut out.

Most customers found that the cap fits loosely but better than nothing or a rag, etc. Further, they also found that the cap is a perfect replacement for aged fill hatch.

Top Customer Quotes:

Parts are constructed with UV stabilized plastic.
This is constructed with UV stabilized plastic.
This has a very cheap platicky feel.
4.5" wide and fits a 3.5" cut out.

Best For Simpler Rv Water Systems: Recpro Rv Gravity Water Fill Cap

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The recpro rv gravity water filling cap's superior materials makes sure that it ages well with use. The Recpro Rv Gravity Water Fill Cap is perfect and it is durable. With this durability, aesthetics, and convenience, this gravity fill hatch is just the thing you need to fill up your water tanks. And, the cap allows for a perfect fit and it is resistant.

Lastly, the recpro rv gravity water fill cap is perfect for simpler rv water systems and most models of rvs.

Almost all customers agree that the fill is perfectly and performed exactly as described.

Why We Like This:

Don't wait until your current hatch becomes cracked and faded.
Lot of satisfied buyers.

Best For Stainless Steel: Iztor Rv Gravity Water Fill Cap

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The Iztor line of caps comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Iztor Rv Gravity Water Fill Cap is made of healthy food-grade plastic pp injection molding, which can be locked (two keys), taking into account the health effects on the human body. Make sure this fits by entering your model number. The gravity water inlet is equipped with a bayonet cap, and the 75.

The cap has vent holes, so there will be no water flow back spray phenomenon during the water filling process, and it is safer to use. Also, this is designed with industrial arc lines and is marked with a clear nozzle mark. Most importantly, the iztor rv gravity water fill cap design is convenient for water to enter without overflow.

Why We Like This:

This is simple and generous and blends perfectly with the rv body.
This is tighter, does not leak water, is waterproof and leak-proof and prevents loosening.
This is good for stainless steel and it is white.

Best For Electrical Enclosures: Kuayi Rv Gravity Water Fill Cap

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Kuayi is known for creating pragmatic and minimalist caps for people on the go, and its line of Kuayi Rv Gravity Water Fill Caps definitely falls in line with that reputation. The kuayi rv gravity water fill cap functions properly and it is lockable. Make sure this fits by entering your model number. In addition, the cap includes a round gravitywater inlet filled dish hatch lock with 2 pieces of keys, ensure use of water safely. Most importantly, the kuayi rvgravity waterfill cap fits snugly for leak proof, is ideal for center console doors, It is great for fast shipping and has a sealed ring design.

One customer says - "It allows you to add water really well. ". Most buyers found that the cap comes with its own foam seals and screws.

Why We Like This:

Spring and sealed ring design,leak proof and anti - loosening.
Large diameter for faster fill rate,easy to installation.
High quality food grade pp stabilized plastic.

Best For Center Console Doors: Kuayi Locking Cap

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Compared with other fill in this category, the Kuayi Locking Cap has a convenient design. The kuayi locking cap is perfect and it is very quick. Make sure this fits by entering your model number. Also, the cap is good for leak proof, is suitable for center console doors, it is great for electrical enclosures and has a sealed ring design.

Above all, the kuayi locking cap includes a round gravity water inlet filled dish hatch lock with 2 pieces of keys, ensure use of water safely.

Most customers opine that the cap is smaller than the stock standard for of the regular cap/ring that comes on most rvs. Also, they say that the fill looks and works great and will not work for city water hookup. In addition, a few say that the freshwater port does not have threads needed for a hose connection.

Why We Like This:

High quality food grade pp stabilized plastic.
Spring and sealed ring design,leak proof and anti - loosening.
Large diameter for faster fill rate,easy to installation.
This is made for easy install and it works well.

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Best For Leak Proof: Machswon Rv Gravity Water Fill Cap

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Next on the list, we've got yet another cap that manages to win our hearts. It's the Machswon Rv Gravity Water Fill Cap and it's widely considered as one of the most convenient caps you can buy. The machswon rv gravity water fill cap is best for leak proof and it is great for electrical enclosures. Large diameter for faster fill rate, easy to installation. In addition, this includes a round gravity water inlet filling dish hatch lock with 2 pieces of keys, ensure use of water safely. Most importantly, the machswon rv gravity water fillcap is good for center console doors, It is white and has a sealed ring design.

Why We Like This:

Large diameter for faster fill rate,easy to installation.
High quality food grade pp stabilized plastic.
Spring and sealed ring design,leak proof and anti - loosening.

Best For Good Quality: Flameer Rv Gravity Water Fill Cap

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The Flameer Rv Gravity Water Fill Cap might be a relatively new release, but it's still nothing short of impressive this year, thanks to multiple price cuts and added new features over the past few months. The flameer rv gravitywater fill cap fits perfectly, It fits perfectly and has a sealed ring design. Make sure this fits by entering your model number. Also, the fill is lockable and it is black.

Above all, the flameer rvgravity water fill cap is durable and it has a cutout diameter.

Almost all customers quickly discovered that the fill would not be a good hiding place for a rock or a dirt clod or a stick, etc. In addition, a few also found that the fill is a perfect replacement for the original, non-locking waterfill assembly. In conclusion, buyers found this to be one of the best things for daily purposes.

Why We Like This:

Spring and sealed ring design,leak proof and anti - loosening.
Cutout diameter: approx. 85 mm/ 3.34 inch.
It has a 1/2" air vent for a faster fill rate and a 1.36" barn connection.
This can be trusted for good quality and it fits snugly for leaks -.

Best Exhaust Hole Design: Gorgeri Rv Gravity Water Fill Cap

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The Gorgeri rv gravity water fillcap should be able to handle its purpose and duties with ease. The Gorgeri Rv Gravity Water Fill Cap is locked to ensure water safety. Make sure this fits by entering your model number. The fill tank lock cover is made of food - grade plastic pp for use in fresh water systems.

Lastly, the Gorgeri rv gravity water fill cap is suitable for most rvs, yachts, campers, and trailers.

Customers also found that its wise to buy a rv gravity water fill cap, along with this fill.

Why We Like This:

This is 1 x filler, 2 keys and 3 screws.
This is designed with a spring and sealing ring to prevent leakage and loosening.
This fits in sizes 4.3 x 4.3 x 3.1 inches.
This is designed with an exhaust hole to prevent water spraying when adding water.

Best For Purchase With Confidence: Fydun Rv Gravity Water Fill Cap

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The Fydun Rv Gravity Water Fill Cap should be able to handle its purpose and duties with ease. The fydun rv gravity water fill cap is designed with a spfor ring and sealing for the ring to prevent leakage and loosening. The records of every quality control link in product production are very strict, so you can buy with confidence. Moreover, the fill can be matched with rv, rv, rv, boat, and car.

Lastly, the fydun rv gravity water fill cap offers it for purchase with confidence and it is fitment.

Why We Like This:

This comes with a venting holes design, which can prevent water spraying when water is added.
This has good compatibility, high quality, wide range of uses, simple and generous appearance.
Lot of satisfied buyers.