How to Install a Fresh Water Back Flow Preventer on a RV Water Heater

Question

Question:

Which end of the back flow preventer is screwed into the rv water heater stem or head for cold/hot water? Thanks!!

asked by: D G

0

Expert Reply:

The Valterra 1/2" check valve # P23415LFVP fresh water backflow preventer has an arrow stamped between the threading and the nut. It can be difficult to see, if you don't look closely. You should install the backflow preventer with the arrow pointing in the same direction as the water flow. I have attached a photo that clearly shows the correction direction.

expert reply by: Edward F

0

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The Dexstar Steel Mini Mod Trailer Wheel - 16" x 6" Rim - 8 on 6-1/2 - Black #AM20761B have a maximum air pressure rating of 110 psi and a weight capacity of 3750-lbs.

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The Dometic model B59516 is showing up as a Brisk II 15K BTU unit so the only thing you'll need to check is what style connector your current unit has. If you remove the cover for the air distribution box inside the trailer you should see the…

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Answer 4

You should only need the Valterra Check Valve for RV Fresh Water Systems #P23415LFVP at the cold inlet of your water heater. Typically you will have a total of three fresh water check valves; one at the cold inlet to the water heater, one at the city…

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Answer 5

Antifreeze leaking into the water heater could be remotely caused by a bad check valve, however, this would all depend on the location of the check valve. Generally speaking, there are only 2 check valves installed in the plumbing system for an RV.…

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Answer 6

It sounds like your system needs a backflow preventer like the Camco RV Fresh Water System Backflow Preventer - 1/2" Diameter - Brass #CAM23303. This allows water to flow only in one direction so that your fresh water tank doesn't fill up…

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Answer 7

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Answer 8

The water leaking is normal its your overflow which means that your fresh tank is now full. If you install a valve on the overflow then it needs to be open when filling and when using or else the tank could explode. It could also be that your check…

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Answer 9

We do have some check valves available from Valterra and Camco, both of which are big in the RV plumbing industry and have great reputations. The 2 most popular check valves that we have are parts #P23415LFVP, which has 1/2" MPT x MPT fittings,…

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Answer 10

Hello Dan, thanks for reaching out. You asked a good question so I went out to our warehouse and got my hands on the B&B RV Fresh Water Fill Diverter Valve and Plate Assembly #BM35RR. The threaded fittings are not bonded together, and I was…

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Answer 11

Brass fittings like the #P23415LFVP can be difficult to remove. Especially if there was thread locker or thread tape used. It's hard to say how much force you'd need but you might try heating up the fitting to release any thread locker.

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Answer 12

You'll want to replace the check valve with the part #P23415LFVP if the internal components of what you have now are coming out.

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How to Install a Fresh Water Back Flow Preventer on a RV Water Heater

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