Posted by on 5/25/2023 to
Fresh and Gray Water Tanks
I need a clean-out hole for my tank.
We do not offer clean-out ports at this time but there are many options online that allow you to install the needed clean-out port.
We do not offer clean-out ports at this time but there are many options online that allow you to install the needed clean-out port.
You could install a Uniseal fitting into your tank and as long as you have a smooth sided deck mount this could be fitting into the Uniseal.
You will need to verify if items will fit your application, such as being food safe, we are not aware of this.
Dometic Universal Holding Tank Clean-out Kit
8 inch Boat Hatch Cover Deck Plate Hatch,White 8 inch Non Slip Inspection Hatch w/Detachable Cover
Can I have the fittings moved?
Can you add extra fittings to the tank?
Class A Customs no longer offers custom fittings unless you are ordering 50 or more of the same tanks per order.
We offer Uniseal fittings that allow the end user to place a fitting anywhere in the tank. Installation video and sizes.
Search Uniseal in top search bar or look in Plumbing Category.
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. 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
Search Uniseal in top search bar or look in Plumbing Category.
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.
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
|
Uniseal® Part No |
Uniseal® Size Sch 40 Pipe I.D. |
|
Pipe O.D. Size *2 |
|
Holesaw Size Required |
|
|||
|
|
Imperial |
Metric |
|
Imperial |
Metric |
|
Imperial |
Metric |
|
|
U018 |
3/16" |
4.75mm |
|
0.250" |
6mm |
|
0.315" |
8mm |
|
|
U025 |
1/4" |
6.5mm |
|
0.375" |
9.5mm |
|
0.5" |
12.7mm |
*1 |
|
U0312 |
5/16" |
8mm |
|
0.40" |
10.5mm |
|
0.5" |
12.7mm |
*1 |
|
U038 |
3/8" |
9.6mm |
|
0.675" |
17mm |
|
1.0" |
25.4mm |
|
|
U050 |
1/2" |
12.7mm |
|
0.84" |
21mm |
|
1.25" |
31.7mm |
*1 |
|
U075 |
3/4" |
19.2mm |
|
1.050" |
27mm |
|
1.25" |
31.7mm |
*1 |
|
U100 |
1" |
25.4mm |
|
1.315" |
33mm |
|
1.75" |
44.4mm |
|
|
U125 |
1 1/4" |
32mm |
|
1.66" |
42mm |
|
2" |
50.8mm |
|
|
U150 |
1 1/2" |
38mm |
|
1.9" |
48mm |
|
2.5" |
63.5mm |
|
|
U200 |
2" |
51mm |
|
2.375" |
60mm |
|
3" |
76.2mm |
|
|
U275 |
2 3/4" |
70mm |
|
2.913" |
74mm |
|
4" |
101.6mm |
*1 |
|
U300 |
3" |
76.2mm |
|
3.5" |
89mm |
|
4" |
101.6mm |
*1 |
|
U400 |
4" |
102mm |
|
4.5" |
114mm |
|
5" |
127mm |
*1 |
|
U400-SDR35 |
4" |
102mm |
|
4.33" |
110mm |
|
5" |
127mm |
*1 |
*1 - Uniseals U025 and U0312, Uniseals U050 and U075, Uniseals U275 and U300, Uniseals U400 and U400-SDR35 require the same sizes of holes.
The difference is made up in the thickness of the Sarlink 4165 rubber.
*2 - Always measure the Outside Diameter (O.D.) of your pipe. This is the most important size to match into the Pipe O.D. hole size of the Uniseal to create your seal.
Search Uniseal in top search bar or look in Plumbing Category.
For my application I am not using a fill dish.
You
can place a larger fitting such as a PVC elbow into the per-installed
tank fitting and just rest the garden hose / pressurized line in this
fitting, Do not make a
secured/sealed connection as this would then be pressurized and would
damage the tank. This would then be a gravity fed fill, you can make the
same type of fitting set-up for your vent.
- Be sure to
have an additional fitting open at the top of the tank to let air in/out
when using the tank, this would be your vent.
- You can cap the fitting (a) and vent (b) when transporting to prevent water from spilling.
- Be sure to uncap the vent when removing or adding water to the tank.
- It is best to have a screen over the vent fitting to prevent anything from entering the tank.
We do not sell these products, examples only, verify what items you are needing.
Gizmo Vent Cap VC-M-1.5 - Male Thread - 1.5"
Blank Tanks mean no fittings are installed in tank. You will need to verify the lead time on Blank Tanks as we spin the fittings into our tanks as soon as they are made.
If we are currently making a tank we can get you a Blank Tank very quickly, shipping the next business day, however, if we are not currently making a tank it can take up-to several weeks to get a tank.
You can call or use the contact us form to ask about lead times on the Blank Tank you are needing.
When ordering a Blank Tank place the tank(s) you are needing in your cart and at check-out in Customer Comments specify what tanks are to be Blank:
EXAMPLE:
Part # is a BLANK TANK
All Tanks Are BLANK
How To Order Blank Tanks
- Place item in cart
- You will be taken to the Shopping Cart Page
- Proceed to Checkout Button (located on Right Side of Page)
- Fill-out the Email, this is to email your Order Confirmation and Shipping Details (you do not have to create an account but if you want to see the order later you will need an account)
- Fill-out the Shipping Methods Address Information - VIEW PAYMENT INFORMATION BELOW
- Click Check Box I have read and agree to the 30 Day Return Policy and 14 Day Damaged/Missing Item Policy.
- Click the Proceed to Shipping Calculation
- Select Shipping Methods - Free Shipping - View item page for shipping method
- Click the Proceed to Payment Information
- Customer Comments Section
When ordering a Blank Tank place the tank(s) you are needing in your cart and at check-out in Customer Comments specify what tanks are to be Blank:
EXAMPLE:
Part # is a BLANK TANK
All Tanks Are BLANK
Payment Information
Unfortunately at this time to stop online fraud we can only ship to addresses that you have registered with your credit card / bank as an approved ship-to address. This will show on the checkout page as Shipping Address.
Address must be complete and completely match what you have registered with your credit card / bank, most companies check only the zip code, our system checks the entire address.
We do not see your PayPal Billing Address, therefore you can use this to have items shipped to any location you like.
The Billing & Shipping Address on the order page of classAcustoms.com will then become your shipping address only and will need to match the Ship-to address you put on the PayPal payment.
Class A Customs Fresh and Gray Water Tank Installed Fittings
Class A Customs only installs the following fittings into our Fresh / Gray tanks at this time
1.5" NPT Female - fitting is closed
.5" NPT Female - fitting is open
1.25" Outer Diameter x 2" Long Smooth Pipe / Boss Fitting - Spout
1.5" NPT Female - fitting is closed
.5" NPT Female - fitting is open
1.25" Outer Diameter x 2" Long Smooth Pipe / Boss Fitting - Spout
For information on custom fittings or placements please use the Water Tank Build Form, please note this option is only available when order 50+ of a tank on single order.
1.5" NPT Female - fitting is closed
use a razor knife to cut membrane out, easiest when cut in halves
use a razor knife to cut membrane out, easiest when cut in halves
Fittings and Hoses We Offer That Fit 1.5" NPT Tank Fitting
Can be used with 1.5" Fitting on tank to connect to 1.375" Hose
Can be used with 1.5" Fitting on tank to connect 1.5" PVC Pipe for draining fresh or gray water tank
1.375" (1-3/8") Food Grade Water Hose
1.375" hose can be used with the fill dishes and the Loose Fitting / Fixture - 1.5" Thread x 1.25" Hose Barb Fitting - Gray
1.375" hose can not be used with spouts on tanks.
1.375" hose can be used with the fill dishes and the Loose Fitting / Fixture - 1.5" Thread x 1.25" Hose Barb Fitting - Gray
1.375" hose can not be used with spouts on tanks.
.5" NPT Female - fitting is open
Fittings and Hoses We Offer That Fit .5" Tank Fitting
Can be used with .5" Fitting on tank with .5" Hose for Fill Dish Vents and Water Pumps
.5" Hose can be used with the fill dishes vents and the water pumps we sell.
1.25" Outer Diameter x 2" Long Smooth Pipe / Boss Fitting - Spout
glues does not stick to pipe, it can not be sealed or capped
you will need to use the 1.25" Hose with Clamp
glues does not stick to pipe, it can not be sealed or capped
you will need to use the 1.25" Hose with Clamp
Hose We Offer That Fit 1.25" Tank Fitting
1.25" (1-1/4") Food Grade Water Hose
1.25 hose hose can be used with the gravity dishes and spouts/boss fittings on tanks.
1.25 hose does not fit the Loose Fitting / Fixture - 1.5" Thread x 1.25" Hose Barb Fitting - Gray
1.25 hose hose can be used with the gravity dishes and spouts/boss fittings on tanks.
1.25 hose does not fit the Loose Fitting / Fixture - 1.5" Thread x 1.25" Hose Barb Fitting - Gray
Where are the fittings located on the tanks?
Are there fittings on both ends of the tanks?
Please look at the photos of each tank as fitting placement can vary by tank, typically fittings are all located on one end of the tank.
Are there fittings on both ends of the tanks?
Please look at the photos of each tank as fitting placement can vary by tank, typically fittings are all located on one end of the tank.
How do I get the large fitting out? Are these punch out fittings?
Each tank will come with at least one permanently mounted patch, it is from the manufacturing process, this is not a fitting and does not unscrew.
All water tanks Class A Customs carries must be gravity fed and vented, they are not pressurized tanks.
Have a certified technician install all parts to prevent product damage and personal injury.
A garden hose (a connection from your faucet indoors, etc. anything that pushes the water) is a pressurized water line, do not make a secured connection to the water tank with a pressurized line. Tanks need to be gravity feed, this allows for air to escape while the water is going into the tank. You ca use a Gravity Fill Dish located on the outside of your vehicle to fill the tank, please view the Basic Plumbing Diagram below.
"Venting" the tank lets air move in and out of the tank when in use. Tank must have a large enough opening for air to freely move in and out of tank, if tank is not properly vented tank will explode when filled or implode when emptied. Trying to use a pressurized line "half-way" to prevent damage to the tank will does not work because you can control the amount of water flowing but not the pressure in the line, leaving the tank to fill risks exploding the tank or damaging fittings.
Have a certified technician install all parts to prevent product damage and personal injury.
A garden hose (a connection from your faucet indoors, etc. anything that pushes the water) is a pressurized water line, do not make a secured connection to the water tank with a pressurized line. Tanks need to be gravity feed, this allows for air to escape while the water is going into the tank. You ca use a Gravity Fill Dish located on the outside of your vehicle to fill the tank, please view the Basic Plumbing Diagram below.
"Venting" the tank lets air move in and out of the tank when in use. Tank must have a large enough opening for air to freely move in and out of tank, if tank is not properly vented tank will explode when filled or implode when emptied. Trying to use a pressurized line "half-way" to prevent damage to the tank will does not work because you can control the amount of water flowing but not the pressure in the line, leaving the tank to fill risks exploding the tank or damaging fittings.
I am going to use a sealed pressurized line to the tank.
This will void any warranty on the tank. We can easily tell when a tank has exploded due to incorrect usage, you will split the tank or force the fittings out of the tank, again this is not covered under any warranty.
Fill Dish Information
For adding water to the Fresh / Gray Water Tank you need a Gravity Fill Dish
the food safe garden hose rests in the fill port on the fill dish - it does not screw onto the port
this is a non-pressurized fill
For using water directly from a food safe garden hose you need a City Fill Dish
The plumbing will bypass your water tank and hook directly to your water heater and faucets.
The food safe garden hose makes a sealed connection on the fill dish and the water supply is pressurized.
This is a pressurized line and can NOT hook to your water tank - pressurizing the tank will cause the tank to explode, fittings to pop-out, cracks to tank, etc.
Units that have metal water tanks can use city fill dishes because the metal tank can withstand the pressure, Class A Customs water tanks can not be pressurized.
We carry Gravity Fill-Dishes, City Fill-Dishes and Combo Fill-Dishes that have both gravity and city, the benefit of having both is you can have a water tank of fresh water but if you go to a location that supplies pressurized water (campground - fair - etc.) you do not need to use your water tank supply of water you can simply use the water provided. Be sure to look at the provided example plumbing diagram for more reference.
For my application I am not using a fill dish.
You can place a larger fitting such as a PVC elbow into the per-installed tank fitting and just rest the garden hose / pressurized line in this fitting, Do not make a secured/sealed connection as this would then be pressurized and would damage the tank. This would then be a gravity fed fill, you can make the same type of fitting set-up for your vent.
- Be sure to have an additional fitting open at the top of the tank to let air in/out when using the tank, this would be your vent.
- You can cap the fitting (a) and vent (b) when transporting to prevent water from spilling.
- Be sure to uncap the vent when removing or adding water to the tank.
- It is best to have a screen over the vent fitting to prevent anything from entering the tank.