14 best rv black water tanks

RV black water tanks are an essential component of recreational vehicles (RVs) and motorhomes, responsible for collecting and storing wastewater from the toilet. Understanding these tanks and their maintenance is crucial for RV owners. Here's what you need to know about RV black water tanks:

  1. Purpose: The primary purpose of an RV black water tank is to store human waste and toilet paper until it can be properly disposed of at a designated dumping station or sewer connection.

  2. Location: RV black water tanks are typically located beneath the RV, usually towards the rear. They are connected to the RV's toilet through a waste pipe.

  3. Capacity: The capacity of an RV's black water tank varies depending on the size and type of the RV. Smaller trailers may have tanks with capacities ranging from 5 to 15 gallons, while larger motorhomes can have tanks with capacities of 30 gallons or more.

  4. Dumping: To empty the black water tank, RV owners need to visit a dump station specifically designed for this purpose. At the dump station, a sewer hose is connected to the RV's outlet, and the tank is emptied into a designated sewage receptacle.

  5. Maintenance: Proper maintenance is essential to prevent odors and blockages in the black water tank. This includes using RV-specific toilet paper that breaks down easily, regularly adding tank treatment chemicals to control odors and facilitate waste breakdown, and flushing the tank thoroughly after each use.

  6. Tank Sensors: Many RVs are equipped with tank level sensors that indicate how full the black water tank is. These sensors can sometimes become inaccurate due to buildup on their surfaces, so it's important to visually inspect the tank and not rely solely on sensor readings.

  7. Dump Valve: The black water tank is equipped with a dump valve that allows you to control when and where the waste is released. This valve should be kept closed until you are ready to dump the tank.

  8. Rinsing Systems: Some RVs are equipped with built-in tank rinsing systems, often called black tank flush systems. These systems use water to rinse the inside of the tank after dumping, helping to keep it clean and odor-free.

  9. Dumping Etiquette: It's important to be courteous when using dump stations. Always follow posted rules, be patient if there is a line, and ensure that you completely empty your tank to avoid future issues.

  10. Freezing Concerns: In cold weather, it's crucial to prevent the black water tank and associated plumbing from freezing. Use insulated hoses and heat tape as needed to protect the tank and pipes.

Understanding how to properly maintain and use an RV black water tank is essential for a comfortable and odor-free RVing experience.Regular care and responsible disposal practices are key to preventing issues and ensuring that your RV's sanitation system operates smoothly.

Below you can find our editor's choice of the best rv black water tanks on the market
  

Class A Customs 14 Gallon RV Waste Black Water Holding Tank WT-1400

Based on 70 reviews Check latest price

Product description

14 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-1400 Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER MADE WITH Medium Density Polyethylene (MDPE) Resin SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant TANK MEASUREMENTS 40” Length (not including pipe) x 14.50” Width x 7.98” Depth at largest point INSTALLATION & PLUMBING 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur MOUNTING & BRACING Brace to prevent tank from moving during transit Do not hang tank by straps Do not place weight on tank

  • 14 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-1400
  • Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
  • MADE WITH Medium Density Polyethylene (MDPE) Resin
  • SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
  • TANK MEASUREMENTS 40” Length (not including pipe) x 14.50” Width x 7.98” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur

User questions & answers

Question: Does it have a predrilled hole in top center
Answer: No. It does not have predrilled holes.
Question: Does mounting braces come with it
Answer: No
Question: Why can't this be used for drinking water? Does it leach chemicals? Goes against code? Or some other reason
Answer: Class A Customs Black Water Hold Tanks are made from the recycled material (DOW NSF International NSF/ANSI Std 61 approved Medium Density Polyethylene (MDPE) Resin) that the fresh/gray tanks are made from, the recycled material is no longer pure in form and is not food grade approved. Class A Customs does not recommend using the black water tanks for drinking water.
Question: Does anyone know where I can get a cap for the end of the pipe? Its outside diameter is 3-7/8". I want to seal it off completely
Answer: With my experience, I'd say check with a plumbing supply house. I got fittings for my tank from a shop that works on RV's.

Class A Customs 27 Gallon RV Waste Black Water Holding Tank WT-2700

Based on 49 reviews Check latest price

Product description

27 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-2700 Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER MADE WITH Medium Density Polyethylene (MDPE) Resin SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant TANK MEASUREMENTS 35” Length (not including pipe) x 17” Width x 10” Depth at largest point INSTALLATION & PLUMBING 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur MOUNTING & BRACING Brace to prevent tank from moving during transit Do not hang tank by straps Do not place weight on tank

  • 27 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-2700
  • Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
  • MADE WITH Medium Density Polyethylene (MDPE) Resin
  • SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
  • TANK MEASUREMENTS 35” Length (not including pipe) x 17” Width x 10” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur

User questions & answers

Question: Can you make a wt-2700 that is only 8" deep (27" x 35" x 8")? with less capacity of course
Answer: Class A Customs can make custom tanks however you would need to purchase a mold which can be rather costly, there may be other suppliers online with the dimensions you are needing.
Question: Is it equipped with a guage to let you know when it's full
Answer: No, this tank is not equipped with a gauge. You can use monitor probes and a monitor panel, KIB is an example, the sticky probes will not stick to this tank material so drilled probes are recommended.
Question: How you drain the thank
Answer: INLET & VENT INSTALLATION Customer will measure and determine where inlet/vent will be placed on Black Waste Tank. Use correct size hole saw bit in order to drill a hole in the tank and place rubber grommet in hole. Rubber grommet will secure inlet/vent pipe with no adhesives needed. DRAIN 3" PVC Fitting is installed on tank, connect plumbing pipe to tank and dump valve to end of plumbing pipe (dump valve typically does not connect directly to tank) helpful installation video can be found online https://www.youtube.com/watch?v=PQvtaBg0j_A&feature=youtu.be
Question: doe's this tank use solvent glue abs fittings
Answer: Class A Customs Black Water Hold Tanks are made from the recycled DOW NSF International NSF/ANSI Std 61 approved Medium Density Polyethylene (MDPE) Resin, being recycled the material becomes very hard typical spin weld fittings will not work on this material and glue does not adhere to this material. Grommets with no glue needed are used to install fittings into black water tanks, a helpful video on this can be found here - https://www.youtube.com/watch?v=PQvtaBg0j_A&feature=youtu.be

Class A Customs 40 Gallon RV Waste Black Water Holding Tank WT-4000

Based on 55 reviews Check latest price

Product description

40 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-4000 Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER MADE WITH Medium Density Polyethylene (MDPE) Resin SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant TANK MEASUREMENTS 56.50” Length (not including pipe) x 24.50” Width x 9” Depth at largest point INSTALLATION & PLUMBING 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur MOUNTING & BRACING Brace to prevent tank from moving during transit Do not hang tank by straps Do not place weight on tank

  • 40 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-4000
  • Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
  • MADE WITH Medium Density Polyethylene (MDPE) Resin
  • SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
  • TANK MEASUREMENTS 56.50” Length (not including pipe) x 24.50” Width x 9” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur

User questions & answers

Question: Are there sensors on the tank
Answer: No
Question: How is it mounted to rv
Answer: It needs to use brackets(cross members) across your fram
Question: What is the measurement from the top of the tank to the lip
Answer: 9 1/2”
Question: This tank showes an imput hole in the top. How big is it I couldn't find anything in the discription
Answer: The top is a mold mark in the tank. In order to fill the tank you will need to use a hole saw bit and drill a hole into the tank where needed for your unit. Then place a plastic grommet to snug the pipe in, we also sell the grommets in 3" and 1 1/2". Thank you, Class A Customs Elkhart, Indiana

Class A Customs 48 Gallon RV Waste Black Water Holding Tank 56 x 30 x 9 WT-4800

Based on 13 reviews Check latest price

Product description

48 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-4800 Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER MADE WITH Medium Density Polyethylene (MDPE) Resin SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant TANK MEASUREMENTS 56” Length (not including pipe) x 30” Width x 9” Depth at largest point INSTALLATION & PLUMBING 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur MOUNTING & BRACING Brace to prevent tank from moving during transit Do not hang tank by straps Do not place weight on tank

  • 48 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-4800
  • Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
  • MADE WITH Medium Density Polyethylene (MDPE) Resin
  • SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
  • TANK MEASUREMENTS 56” Length (not including pipe) x 30” Width x 9” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur

User questions & answers

Question: what is the height at the narrow end
Answer: 6”
Question: What is the dimension from top of tank to ledge of ledge (not the bottom of tank
Answer: The Ledge or lip at the top is 3" long x 1" wide.
Question: Is there an outlet (hole) on the top? I cannot tell from pictures
Answer: No you have to drill out.
Question: What type of caulking or sealant is used at clamped transition fitting coming out of tank
Answer: just regular medium orange cpvc cement and works great

Alpha Systems (VB22548H 22" x 54" x 8" Holding Tank

Based on 98 reviews Check latest price

Product description

ALPHA SYSTEM HOLDING TANK - Alpha's revolutionary blow molded holding tanks are the most reliable in the industry. 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 holding tanks (waste water) have standard configurations with the option to customize fittings. Alpha Systems backs all of the tanks with a 12-month warranty from the date of purchase. Alpha tanks are built to standards specified by IAPMO (International Association of Plumbing and Mechanical Officials) and the Canadian Standards Association. 20677. 22 inch Width x 54 inch Length x 8 inch Height Holding Tank 33- Gallon, Blow-molded with 3 Inch Coupling; (A: 2.439. B:5.976. C:0.312. D:10.732. E:21.463. F:3.537. G:7.878. H:7.878. I: 3.804. J:56.805. K:54. L:21.463. M: 5.356).

  • 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
  • Alpha Systems backs all of the tanks with a 12-month warranty from the date of purchase; Alpha tanks are built to standards specified by IAPMO (International
  • Association of Plumbing and Mechanical Officials) and the Canadian Standards Association
  • 22 Width x 54 Length x 8 Height Holding Tank 33 - Gallon, Blow-molded with 3 Inch Coupling
  • 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

User questions & answers

Question: can this tank be used as a black tank or just grey water
Answer: This is a black water tank
Question: What do you recommend securing it with ? Steel straps ? The side is almost perfect also what size porting does it come with? If so wheres the location
Answer: In my application I am using steel straps with a rubber seal to prevent the strap from rubbing through the plastic. I'm not sure what you are referring to as far as porting, but it has a 3" outlet. Alpha systems does make a installation kit for their tanks. It includes a 3" grommet , 2 1/12 " grommets and extra sensors. This kit does not include straps or mounting hardware, though. Hope this helps!
Question: Is the tank drain on the right or left side of the deep end
Answer: Middle of the deep end.
Question: is it receeded
Answer: I'm not sure what you mean by receded. The top part laid flat. It had two ledges on both sides that you could use to strap it on.

Custom Roto-Molding H85 RV Holding Tank

Custom Roto-Molding

Based on 24 reviews Check latest price

Product description

50 Gal Holding Tank

  • Waste Water Supplies 50 Gal Holding Tank H-85 Custom Roto-Molding, Inc.

User questions & answers

Question: How many gallons will this tank hold
Answer: the one i purchased was rated for 50 gallons
Question: Could you put this tank on a cement pad for above ground septic
Answer: I don't see why not, we just put it on a pallet in the back of it pickup. We're using it as a portable for our RV since the Portable we bought broke. This one is a lot more sturdy.
Question: what type of plastic is it
Answer: Looks like a black ABS type
Question: Is this safe/can this be used for potable/fresh water applications? The dimentions are perfect for my needs and I haven't found a good fresh tank
Answer: I would ask your he as lth d we put. I think they are ed CV plot codes for health safety reasons I do t know if the type of plastic can be used for potbke or not. Sorry....

Icon 00437 Holding Tank with Bottom Drain HT630BSBD - 22.5" x 18.5" x 6"

ICON

Based on 44 reviews Check latest price

Product description

This tank has reinforcements built right in so you can mount a toilet directly on top of it. The holding tank comes with a 3" Threaded Fitting, a 2" Slip Fitting and a 3"ID/7"OD Flange Fitting. No additional fittings are needed. All seams are solvent welded and have a 1-1/4" mounting flange.

  • Built-in reinforcements for mounting a toilet
  • Includes: 3" Threaded Fitting, a 2" Slip Fitting and a 3"ID/7"OD Flange Fitting
  • No additional fittings are needed
  • Features a bottom drain and an 8 gallon holding capacity
  • Dimensions: 22.5" x 18.5" x 6"

User questions & answers

Question: Did have the location measurement of the hole in the bottom
Answer: The hole is in the exact center measuring from front to back, and from side to side. It is also threaded.
Question: how many gallons
Answer: 10 gallon
Question: How many gallons
Answer: Comparing to others close to same size I believe it is 8 gallons.
Question: How many gallons? can we can an accurate amount not a guess
Answer: we bought one and it holds 10 gallons

Class A Customs 31 Gallon RV Waste Black Water Holding Tank WT-3100

Based on 19 reviews Check latest price

Product description

31 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-3100 Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER MADE WITH Medium Density Polyethylene (MDPE) Resin SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant TANK MEASUREMENTS 57.50” Length (not including pipe) x 24.50” Width x 8” Depth at largest point INSTALLATION & PLUMBING 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur MOUNTING & BRACING Brace to prevent tank from moving during transit Do not hang tank by straps Do not place weight on tank

  • 31 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-3100
  • Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
  • MADE WITH Medium Density Polyethylene (MDPE) Resin
  • SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
  • TANK MEASUREMENTS 47.50” Length (not including pipe) x 24.50” Width x 8” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur

User questions & answers

Question: Instructions say dont use straps, can you mount it just by the flange and is that strong enough to support it
Answer: This same style tank is mounted under a forest river R-Pod camper at my local dealer. It has z-channel brackets that span between frame rails holding up the shoulders of the tank. I called the dealer and they are able to order the brackets from the manufacturer for $38 each. I had my father in law weld me two that match before the dealer got back to me. Still working on painting and mounting them.
Question: Is it FDA approved
Answer: This is a discharge tank.
Question: Does anyone know where I can get a cap for the end of the pipe? Its outside diameter is 3-7/8". I want to seal it off completely
Answer: Any hardware store. Lowes, Home Depot, Ace, etc.
Question: There are two different lengths shown in the listing, one says 47.50" and another says 57.50". Which is it
Answer: Tank is 47.5" long. The outlet pipe adds another 4.25"

Class A Customs 30 Gallon RV Waste Black Water Holding Tank WT-3000

Based on 22 reviews Check latest price

Product description

30 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-3000 Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER MADE WITH Medium Density Polyethylene (MDPE) Resin SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant TANK MEASUREMENTS 55.75” Length (not including pipe) x 23.75” Width x 8” Depth at largest point INSTALLATION & PLUMBING 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur MOUNTING & BRACING Brace to prevent tank from moving during transit Do not hang tank by straps Do not place weight on tank

  • 30 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-3000
  • Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
  • MADE WITH Medium Density Polyethylene (MDPE) Resin
  • SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
  • TANK MEASUREMENTS 55.75” Length (not including pipe) x 23.75” Width x 8” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur

User questions & answers

Question: What is the height at the shallow end
Answer: Don’t but they ship broke products then have you pay for shipping back that costs 80% of what you paid for the product
Question: What is the best place to install the fill sensors? The top section sticks out so should the top sensor and maybe middle sensor be on that
Answer: We didn’t install any sensors. It was installed on a pontoon boat
Question: How does tank attach to rv if straps arent to be used
Answer: I used unistrut welded to bottom of bus, all thread and old bed frame to mount it
Question: is there two outlets
Answer: No inlets on tank - Inlet Installation: Customer will measure and determine where inlet will be placed on Black Waste Tank. Use correct size hole saw bit in order to drill a hole in the tank and place grommet in hole. Grommet will secure inlet pipe with no adhesives needed.

Class A Customs 38 Gallon RV Waste Black Water Holding Tank WT-3800

Based on 17 reviews Check latest price

Product description

38 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-3800 Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER MADE WITH Medium Density Polyethylene (MDPE) Resin SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant TANK MEASUREMENTS 56” Length (not including pipe) x 24.25” Width x 8.90” Depth at largest point INSTALLATION & PLUMBING 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur MOUNTING & BRACING Brace to prevent tank from moving during transit Do not hang tank by straps Do not place weight on tank

  • 38 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-3800
  • Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
  • MADE WITH Medium Density Polyethylene (MDPE) Resin
  • SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
  • TANK MEASUREMENTS 56” Length (not including pipe) x 24.25” Width x 8.90” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur

User questions & answers

Question: Do these tanks have the level sensors pre-installed before delivery
Answer: There were no sensors included with this tank
Question: is there a vent on this tank
Answer: Inlet & Vent Installation Customer will measure and determine where inlet / vent will be placed on Black Waste Tank. Use correct size hole saw bit in order to drill a hole in the tank and place grommet in hole. Grommet will secure inlet / vent pipe with no adhesives needed.
Question: Is the 3” outlet pvc or abs
Answer: It is a black plastic tank with a 3" outlet. There is an ABS fitting that has an "O" ring part way up the portion that slides into the female outlet of the tank. It is also clamped by a hose clamp. The other end of the fitting will receive 3" ABS pipe.

RecPro 45 Gallon Black Waste Water RV Holding Tank with Sensors 54" x 32" x 7" | Fitting Kit Included

Based on 1 reviews Check latest price

Product description

Color: Black Capacity: 45 gallons Durable high-density plastic walls Low-profile Front-facing port Length: 54” Width: 32” Depth: 7” Front lip depth: 3” Port: 4” OD and 3.75” ID Multiple depth sensors

  • Capacity: 45 gallons
  • Durable high-density plastic walls
  • Low-profile
  • Front-facing port

Class A Customs 24 Gallon RV Waste Black Water Holding Tank WT-2400

Based on 67 reviews Check latest price

Product description

24 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-2400 Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER MADE WITH Medium Density Polyethylene (MDPE) Resin SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant TANK MEASUREMENTS 42.50” Length (not including pipe) x 23” Width x 9.25” Depth at largest point INSTALLATION & PLUMBING 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur MOUNTING & BRACING Brace to prevent tank from moving during transit Do not hang tank by straps Do not place weight on tank

  • 24 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-2400
  • Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
  • MADE WITH Medium Density Polyethylene (MDPE) Resin
  • SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
  • TANK MEASUREMENTS 42.50” Length (not including pipe) x 23” Width x 9.25” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur

User questions & answers

Question: Can ypu recommend metal straps that I could buy to bolt/mount this tank under a conversion bus
Answer: I used mobile home tie down from Lowe’s. It is heavy gauge galvanized strapping 1-1/4” sold in 25 ‘ length with no holes. I used three straps, and added foam camper weather stripping also from Lowe’s good luck
Question: How do i mount it
Answer: Side flanges
Question: Does this tank have a hole for the vent
Answer: No, it only has the dump fitting installed. Customer will need to determine where entry hole will be and use a hole saw to cut the tank and then install rubber grommet. For an example you can watch a helpful video online at https://youtu.be/miKZMpbCBgc
Question: Does it come with a hole already in it for the toilet to hook up or just the drain fitting
Answer: This comes with just the drain fitting allowing you to decide the placement of the toilet hook-up location on the tank.

Class A Customs 28 Gallon RV Waste Black Water Holding Tank WT-2800

Based on 13 reviews Check latest price

Product description

28 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-2800 Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER MADE WITH Medium Density Polyethylene (MDPE) Resin SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant TANK MEASUREMENTS 46” Length (not including pipe) x 22” Width x 8.5” Depth at largest point INSTALLATION & PLUMBING 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur MOUNTING & BRACING Brace to prevent tank from moving during transit Do not hang tank by straps Do not place weight on tank

  • 28 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-2800
  • Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
  • MADE WITH Medium Density Polyethylene (MDPE) Resin
  • SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
  • TANK MEASUREMENTS 46” Length (not including pipe) x 22” Width x 8.5” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur

User questions & answers

Question: Does anyone know where I can get a cap for the end of the pipe? Its outside diameter is 3-7/8". I want to seal it off completely
Answer: The easiest way would be to glue in a short piece of 3 inch ABS pipe and then glue a 3 inch cap on the pipe. Or if you want a drain, glue a slide shutoff on the pipe. You could also message them directly and they would probably send you a tank without the drain hole.
Question: can this be permanently installed in the ground
Answer: I would have to know why. Are you using it as a septic tank? If so there are better options.
Question: how does this tank mount? Cant a bracket be made to hold it up by the top edge / lip that runs the length of the tank
Answer: I did by welding 2 pieces of 1 1/2 inch angle iron together to make a zee. But I have a welder. A welding shop could make you one very easily.
Question: I dont see a hole in the top coming from the rv
Answer: Customer will measure and determine where inlet/vent will be placed on Black Waste Tank. Use correct size hole saw bit in order to drill a hole in the tank and place rubber grommet in hole. Rubber grommet will secure inlet/vent pipe with no adhesives needed. This is a helpful installation video online https://www.youtube.com/watch?v=PQvtaBg0j_A&feature=youtu.be

Class A Customs 18.5 Gallon RV Waste Black Water Holding Tank WT-1850

Based on 30 reviews Check latest price

Product description

18.5 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-18.50 Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER MADE WITH Medium Density Polyethylene (MDPE) Resin SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant TANK MEASUREMENTS 34” Length (not including pipe) x 16.50” Width x 11” Depth at largest point INSTALLATION & PLUMBING 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur MOUNTING & BRACING Brace to prevent tank from moving during transit Do not hang tank by straps Do not place weight on tank

  • 18.5 Gallon Black / Waste Water Holding Tank Manufactured by Class A Customs Part# WT-1850
  • Black Water Tank Used for Human Waste or Gray Water - DO NOT USE FOR FRESH/DRINKING WATER
  • MADE WITH Medium Density Polyethylene (MDPE) Resin
  • SEAMLESS One piece seamless construction, no seams to burst RESISTANT Stain, Corrosion and Rust Resistant
  • TANK MEASUREMENTS 34” Length (not including pipe) x 16.50” Width x 11” Depth at largest point - 3” PVC Female Pipe Adapter DO NOT over-tighten fittings damage will occur

User questions & answers

Question: How far does the drain pipe stick out
Answer: About 3 or 4 inches, I think.
Question: Does this mount under the vehicle
Answer: Yes it mounts under the vehicle. It has a lip about 2 to 3 inches from the top that you can make a bracket to grip into. Worked great for me. Make sure to put your inlet in the correct location and save the bushing from the old tank to install in this hole. I also installed the liquid level indicators by reaching through the outlet hole. You may need to find someone with a small hand and arm to help with this. Take your time and measure several times before you drill the holes.
Question: what is the top fill inlet size
Answer: With this tank the customer would need to cut the hole, either 3" or 1 1/2" in location needed, then use a grommet to secure inlet pipe. For more information you can check out our blog post. https://classacustoms.blogspot.com/2019/03/rv-waste-water-holding-tank-black-rv.html
Question: Does this tank have water level sensors preinstalled
Answer: No, it does not have pre-installed water level sensors.

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