Class A Customs Waste Water Tanks only come with the ABS outlet installed, the end user will determine where the inlet and vent will need to be placed and install.





RV WASTE TANK INSTALLATION HELP VIDEO




GROMMET INFORMATION

Grommets are not food safe so can only be used for Gray or Waste Water use they are available in sizes 1.5" and 3", no adhesives are needed for use, many customers use adhesive just as an added precaution.



Hole Saw Needed 4"


Hole Saw Needed 2.5"





Use correct size hole saw bit in order to drill a hole in the tank, smooth tank edges, and place Grommet or Uniseal in hole. Piping is then placed into fitting with no glues or adhesives necessary.

After installation of grommet into tank hole, drain pipe goes inside tank grommet and is sealed.

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.




UNISEAL FITTINGS INFORMATION

Uniseal Fittings are food safe and can be used for Fresh, Gray, or Waste Water use, they are available in size .5" to 3", no adhesives are needed for use



Uniseal® Pipe-to-Tank Seals

Uniseal® is the world's best seal, and installing it is a simple process. After cutting a hole in the wall of a tank or other surfaces, the seal is inserted. Then the pipe is coated with a slippery detergent and pushed into the seal. The Du Pont Alcryn® is the key to the liquid-tight seal. When the pipe is pushed through the rubber-like Uniseal® from the outside, the inside Alcryn® wall becomes thin enough to allow the pipe to squeeze through and then forms a liquid-tight seal. The coefficient of friction with the plastic pipe is roughly three times higher than any other material, which allows it to create a better seal than with any other material.

  • Alcryn® melt-processable rubber
  • Long-lasting
  • Resistant to acids, oils, greases, gasoline & sewage
  • Withstands pressure & suction
  • Withstands heat & cold
  • Easy installation
  • Reduced labor & material costs
  • In static conditions, the seal is good up to 65 psi
Installation Instructions and Video at Bottom

3/16" Black Uniseal® Pipe-to-Tank Seal

  • For pipe with dimensions: 3/16" ID x .250" OD
  • Hole size required: .375"

1/4" Black Uniseal® Pipe-to-Tank Seal

  • For pipe with dimensions: 1/4" ID x .375" OD
  • Hole size required: .5"

3/8" Black Uniseal® Pipe-to-Tank Seal

  • For pipe with dimensions: 3/8" ID x .675" OD
  • Hole size required: 1"
  • For pipe with dimensions: 1/2" ID x .840" OD
  • Hole size required: 1.25"

3/4" Black Uniseal® Pipe-to-Tank Seal

  • For pipe with dimensions: 3/4" ID x 1.050" OD
  • Hole size required: 1.25"

1" Black Uniseal® Pipe-to-Tank Seal

  • For pipe with dimensions: 1" ID x .1.315" OD
  • Hole size required: 1.75"

1-1/4" Black Uniseal® Pipe-to-Tank Seal

  • For pipe with dimensions: 1-1/4" ID x 1.66" OD
  • Hole size required: 2"

1-1/2" Black Uniseal® Pipe-to-Tank Seal

  • For pipe with dimensions: 1-1/2" ID x 1.9" OD
  • Hole size required: 2.5"

2" Black Uniseal® Pipe-to-Tank Seal

  • For pipe with dimensions: 2" ID x 2.375" OD
  • Hole size required: 3"

3" Black Uniseal® Pipe-to-Tank Seal

  • For pipe with dimensions: 3" ID x 3.5" OD
  • Hole size required: 4"

Instructions

1. Be sure to have recommended hole saw for selected fitting, check chart before cutting.
2. Using hole saw cut hole in wall, ensure that the hole is cut clean. Irregular holes could cause poor seating and possible leaks. File or sand the edges so there are no rough or sharp edges be sure to remove any remaining debris.
3. Insert the Uniseal with the wide surface facing out.
4. Make certain the pipe to be inserted is cut clean and square, file or sand the edges so there are no rough or sharp edges to cut the Uniseal surface.
5. Use liquid soap or Teflon lube on the pipe to be inserted. Insert the pipe into the Uniseal as far as needed to clear the inside of the seal by about 2".
6. Be sure to clean tank thoroughly prior to using removing any debris and lubricant residue.

2 Comments

Roger Leonard

Date 8/10/2022

Great video. Could you give us a part number of the Sika adhesive you used? Thanks,.

Blog

Date 8/10/2022 12:53:42 PM

The person who made this video is on Youtube, https://www.youtube.com/c/MRRVTECH, this is not our video only linked for educational purposes. Question: "What was the sealant you were using for the tank flush flange? Also, what sealant for the stool & vent ports?" Their Reply: "Sikaflex 221"

Billy Simmons

Date 11/6/2022

What size hole do you drill for3 inch pipe

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