Is Sealant Required for the Replacement Rubber Grommet for RV Black Water Tanks  

This is an unexpected configutation with the valve connected directly to the black tank. Nevertheless, it seems that a Valtera #F02-2106 Replacement Rubber Grommet would fix you right up. I think I would spring for some new Valterra #H03-0018 hose…

I don't see any reason why you can't add a sight glass to the 24-gallon Valterra RV Water Tank #R8048. These aren't something we offer or have experience with in regards to installation, so you may need to find a way to fabricate or…

The Valterra Rubber Tank Grommet #F02-2106 can fit a variety of floor or wall thicknesses as it's designed to mount to a toilet floor flange that gets mounted to the floor under the toilet. This grommet does not fit directly to the floor or…

The Dometic 310 Part-Timer RV Toilet #DOM57FR water inlet is a 1/2" NPT fitting. You should be able to easily find a tee to connect to the water supply line and water inlet on the toilet, just make sure you determine the bidet's fitting size…

The Dometic RV toilets like the part #DOM29FR that you referenced use the standard 1/2 inch thread size for the supply line like most toilets do.

The Dometic 311 Part-Timer RV Toilet #DOM67FR does not come with the hand sprayer but you can add it with the Installation Kit #DOM75FR. I confirmed this with my contact at Dometic.

You can use the Loctite RTV 598 High-Performance Silicone Gasket Maker #LT37467 as a sealant. You'll just want to put this sealant in between the two surfaces.

The grove of the replacement Rubber Grommet for RV Black Water Tanks, #F02-2106 that you linked to is about 1/4". If your tank is 3/8", this will work, providing a tight seal.

I believe I have a solution for you. What you can do is use the LaSalle Bristol Toilet Floor Flange w/ Spigot for RV #3446336347 with the Valterra DWV Adapter for RV Sewer System - ABS Plastic #D50-2929. The #3446336347 is 1-1/2" tall but when…

The LaSalle Bristol Toilet Floor Flange w/ Spigot for RV - ABS Plastic - 3" Hub x 4" Diameter #3446336347 will use the LaSalle Bristol ABS Solvent Cement - Black - 1/2 Pint #3447530889. You will simply then just need the length of 3 inch…

Basically, one friction-style sway control can be used for trailers with up to 6,000-lb GTW. If your trailer's GTW is between 6,000 lbs and 10,000 lbs, you will need two sway-control units, one on each side of the trailer. You will also want to…

To install the 3 inch grommet part #F02-2106 you'd need to drill a hole that is 3-7/8 inches in diameter. The 1-1/2 inch grommet part #F02-2105 requires a 2-1/2 inch diameter hole.