Best Classacustoms Rv Freshwater Tanks in 2026

Fill the water tank in a fraction of the usual time.Fit Type: Universal Fit

Quarter-turn pressure-sealed valve helps to selectively control the water flow

Large 5 by8" fill tube helps to fill the water tank at or near full pressure while minimizing line backflow

55 Gallon Fresh or Gray Water Holding Tank Manufactured by Class A Customs - Made from NSF Approved Materials - Fresh & Drinking Water Safe - Can be used for Fresh or Gray Water Storage

WATER TANK MEASUREMENTS: 37.5” Longest Length (not including fittings) x 17.5” x 19.5”- Tank can sit on any side - rotate tank to change height or width Average Thickness 7/32” +/- Please view photos. (Due to the manufacturing process +/- .25" on each measurement)

TANK BUILT-IN FITTINGS: (TWO) 1.5" Female NPT Fitting - fitting is sealed and watertight, to use remove membrane with razor knife (TWO) .5" Female NPT Fitting - fitting is open DO NOT over-tighten fitting damage will occur, use plastic connecting fittings as metal will damage threads.

1-3/8" ID Fill Hose with Flats (3 Foot Length) - The last picture shows a 10 ft roll and does not represent shorter lengths - The length will be within +/- 3"

This 1-3/8" hose with flats is to be used with hose clamps to connect RV gravity water fill with the RV water tanks (no clamps included). The flats allow for easy clamping.

Made from ethylene copolymer (great flexibility with no kinking)

Assembled Tote Tank Kit: This kit is designed to make using your portable tote tank as easy and secure as possible

Compatibility: Connects your portable tote tank to any lug sewer fitting

Includes: (1) 3-foot tote tank sewer hose (1) 90-degree clear elbow with (2) swivel bayonet ends, and (2) bayonet fitting storage caps

Available in packages of (6 ea.)

Sensor – grommet (1), button-head sensor post (1), washer (1), 3/8” nut (2)

Rust-resistant post and hardware

26 Gallon Rv Fesh Water Tank

High-Impact, Non-Toxic, Food-Grade Polyethylene Construction

Tasteless, Odorless, Rust Proof And Corrosion Proof

Easy to install, fits the 3/8″ diameter holes of existing probes.Fit Type: Universal Fit

Easy to install, fits the 3/8″ diameter holes of existing probes

Compatibility with existing wiring and monitors

The city water connection will connect straight to a garden hose

Parts are constructed with UV stabilized Plastic

Connect to 1/2" threaded pipe on inside, Flange is 2-3/4" diameter

Convenient Off Road Shower Tank mounts to your tow hitch, bumper, roof rack or truck bed rail. WaterPORT’s self-pressurizing 3.8-gallon day tank, filled fast and efficiently with a garden hose. Add pressure to the system at any time via the built-in pump cap.

Large cap opening fills tank to full capacity within 60 seconds. Stay cool by adding ice to your water through the large fill cap.

Generous spray time thanks to the 8-foot hose and a high-pressure multi-pattern spray nozzle that flows for up to 15 minutes.

Made in America

Please be sure to clean tanks before use

All tanks have been pressure tested

This is NOT a disinfecting device, it simply helps you service your fresh water supply MUCH EASIER! No mess, No fuss, No spilling, No waste and No cleanup.

Maintaining your RV fresh water tank much easier.

No moving parts needed, No reduced water restrictions, No assembly, ready to use, lasts for a lifetime

This Accessory hose kit includes all the hoses required for use with a standard fresh water tank.

(1) Water fill intake with large hose fitting and cover, (1) Drainage hose spigot, (2) Large hose clamps for water fill, (5) Small hose clamps for the other hoses, and (3) Small hose fittings/barb-to-screw adapters.

(1) 60" long clear hose is used for air and drainage, (1) 36" large ribbed hose is for water filling, (1) 18" reinforced hose goes to your water pump

[✅Exclusive Technology] Facon’s world-famous Tank Heater Pads. Heater Pads are Designed and Engineered to protect RV holding tanks, pipes and steps from freezing. Winter convenience of Today’s RV’er. Provides water for RV, Camper, Trailer, Mobile home, Boat, Marine in winter.

[✅Thermostat Controlled] Simply turn "ON" the power switch when the outside temperature is near to freezing. The heat will transfer to the tank immediately to starts protecting your holding tank from freezing up. Built-in thermostat is set to turn Itself on at 45°F(±5 degrees) and turn itself off at 68°F( ±5 degrees). The heater pad will not heat the tank if the temperature is not near freezing. Turn "OFF" the switch when the outside temperature remains above freezing, or RV is not in use.

[✅Application] Voltage: 12Volts DC, 78Watt, 5.8A, 2-wires design without plug - convenience for fixed place installation. Red wire=positive (+); white wire=negative (-). Pad size L 25'' x W 7-1/4'' works efficiently up to 50 gallon holding tanks, such as fresh water tanks, grey water tanks and black water tanks.

This 42 gallon water tank measures 39" x 18" x 14" (not including fittings)

All tanks come with (1) 1.25" water fill inlet and (3) 3/8" NPT connections. Non-Pressurized Tank - The tank must be vented

These rotational molded fresh water tanks are made from a high quality durable polyethylene material.

Perfect for RV, camper, and more — install as an inlet or outlet, horizontally or vertically

Use as tank-fill or a hook up to city/shore water connections

Hydrant “locked” without a hose connector, simply push and twist for instant, leak-free water access

WATER SENSOR - Wirelessly monitor the level of all RV grey and potable holding tanks. Any flat bottom water tank up to 48" will work.

EASY INSTALL - Mounts to bottom using included mounting collar. Strong adhesive will not fall off your RV propane tanks, even on bumpy roads, yet it is still easy to replace.

IMPROVED BATTERY LIFE - Battery on the Pro Check Water Sensor lasts 2 years with updates every 3 seconds. Configurable update rate can extend life even further

51 Gallon Fresh Water Tank for RV and Campers

Blank water tank: Fully customizable DIY RV water tank

Made in America

1-1/2" ID Fill Hose (3 Foot Length) - The length will be within +/- 3"

This 1-1/2" hose is to be used with hose clamps to connect RV gravity water fill with the RV water tanks (no clamps included).

Made from ethylene copolymer (great flexibility with no kinking)

【Applicability】The RV fuel tank filler cap has a wide range of applications, suitable for most RVs, yachts, campers, and trailers, about 11 x 11 x 8 cm/4.3 x 4.3 x 3.1 inches, providing you with the greatest convenience.

【Special design】The fuel tank filler cap is made of food-grade plastic PP for use in fresh water systems. The cap is locked to ensure water safety. After a special design, it is durable and can reach the best condition when used.

【Excellent performance】The RV tank filler cap has excellent performance. The cap is designed with springs and sealing rings to prevent leakage and loosening.

Made in America

Please be sure to clean tanks before use

All tanks have been pressure tested

Inlet: 2" Long

Inlet: 7/8" Internal Diameter (smooth barrel)

Outlets: Internal diameter 3/8"

More adaptation scenarios:The water inlet has a wide range of applications and is very suitable for assembling large transport vehicles for RVs, RVs and yachts. You will get: 1 x Water Filler Cap, 2 x Keys, 3 x Screws.

Gravity Water Inlet RV Water Filling:The RV water inlet adopts a new type of spring and sealing ring to design a 12V / 24V cigarette lighter socket, which is more convenient for charging. There is no need to wire when using a submersible pump to pump water, avoiding pulling the wire from the inside of the RV to the outside of the RV. Effectively prevent leakage and loosening, this will be your good purchase choice.

Lockable:This is a pressure nozzle baffle that can be used when the door is closed without opening the door, which is convenient for the use of the pressure nozzle. The pressure water injection port can be used for pressure water injection and rapid drainage. We look forward to our products can provide protection for your RV trip, so that you have no worries.

The uniform thickness of the tanks makes them much more durable than the traditional rotational molded and thermoformed varieties

Alpha Systems blow-molded HDPE tanks are an integral component to all recreational vehicles

These RV freshwater tanks (potable water) have standard configurations with the option to customize fittings

【RV City Water Inlet Hatch】 Gravity Water Inlet & Fresh Water Fill Hatch with Lock, used for filling the water holding tank with gravity or a city water threaded connection with a garden hose.

【FITS INLET】suitable for most fresh water inlets on motorhomes caravans and boats.

【SIZE】1/2" MPT, 1-1/4" barb connection and 1/2" air vent

Fresh Water Inlet; Used For RV And Marine Fresh Water System; Fill Spout With Hinged Cover; For 1-3/8 Inch Tubing; Built-In Vent Port; Colonial White; With Retail Packaging

1-3/8 Inch Tubing. Colonial White Color

Built-In Vent Port. Hinged Cover Protects And Keeps Fill Clean

【Widely Application】 Off-road shower tank perfect for overlander,camper. Pressurized water tank is ideal for on-the-go showers, cleaning and rinsing equipment after beach trips and surfing,camping,Overlanding,Hunting,Off-road racing,Emergency preparedness, fishing, hiking,BBQ,motocross,mud race,trail riding,scuba or any time you need pressurized water.

【Muti Installation Option】Camping shower water tank can mount to Roof Rack Mounts，Hitch Mounts，Bumper Mounts，Roll cage mounts are perfect for those who have a roll cage installed on their vehicle.

【Super Durable Design】This road shower is made of high-strength aluminum and magnesium alloys,high quality hardware,which is strong and durable, It is very suitable for the use of complex field environment.

【Widely Applicaiton】--- Entrance of the gravity water filling hatch for caravan towing car. For doors, bait well lids, hatches, center console doors, tackle units, drawer units, electrical enclosures.

【High-Quality Materials】--- The RV's water injection cover is made of high-quality food-grade ABS material, which has good durability and strength, abrasion resistance, is not easy to age, durable and has a long service life.

【Leakproof And Anti‑Loosening】--- Spring ring and sealing designed, leakproof and anti‑loosening. Gravity water inlet features bayonets‑style lid, 0.4in air vent for faster fill speed, and 1.6in barn connection.

- High-Quality PVC Water Storage Bladder ---> The water carrier/bag is made of high-density PVC canvas composite, with good sealing, strong flexibility, strong environmental adaptability, light weight, anti-fall, soft and foldable, the thickness of the fabric is about 1mm also has high toughness in winter, can bear heavy load, adapt to temperature -50~+60℃, and can be used repeatedly for many years.

- Easy to Use for Winter Summer Water Storage ---> Comes with water inlet and outlet valves. When in use, close the lower valve and fill with water. When transporting to other places, put it on the transport vehicle in advance, and then fill it with water. After being transported to the destination, directly open the lower valve to complete the watering by gravity, or connect the water pipe to increase its irrigation area. Gardens or fields that cannot be reached by large waterwheels can be

- Foldable and Easy to Move: This water bag can be folded and rolled up when not in use, offering a perfect solution for transporting and storing non-potable water.

【Perfect Design】Featured by a bayonet style cap and magnetic attraction, this gravity water inlet effectively prevent from being opened due to road bumps during driving. Also keeps water clean for easy using.

【Premium Material】Made of high quality ABS, cold and heat resistant, anti-corrosion, soild, durable and has a long service life.

【Lockable】Comes with necessary keys, this gravity water inlet ensure using water safely.

Fleck 9100 Twin Tank Replacement Control Valve Automatically switches between dual tanks

9100 valve to fit on twin tank softener, heavy duty construction for long life, 5 year

5 cycles water softener replacement valve, easy to use, dependable