Dump station info

[MartyS62]

Can someone please help me understand what is what. #1 thru #3
Thank you in advance.
2017 Fuzion 417

[Dhuhn]

one is fresh water connection, two is black tank flush connection , three is fresh water tank fill valve,

[MartyS62]

So #3 only opens the fresh water tank ? I thought that the black tank has a sprinkler head inside ? Am I wrong.

[Brentw]

1 is fresh water connection. #3 will select whether fresh water is pressuring the rv system ( normal)or filling the fresh water storage tank.
#2 is black tank flush, yes there are sprayers mounted in the tank.

[Dhuhn]

number three when turned on will divert water to fill fresh water tank so you can fill tank. you can always pull water from your tank weather this is on or off with water pump.

[JRTJH]

A word of caution about operating the city/tank water fill switch: The valve behind the panel is "filled with O-rings"... Those O-rings have a potential to dislodge when the valves are operated under pressure. If they dislodge, your entire assembly becomes inoperable. So, ALWAYS use a quality water pressure regulator adjusted to somewhere around 45-55 PSI and NEVER twist any of the valves with pressure on the system. In other words, turn off the water before twisting the valve to fill the fresh water tank, and turn it off again to switch back to city water. Same with the winterization valves and the water heater bypass valve....

While you may never have an issue with a torn or dislodged O-ring, if you do, it's a $150-200 repair bill, just for the replacement valve, if you can find one... It's a "sure-fire way to ruin a weekend camping trip".....

[MartyS62]

Thank you to everyone for your knowledge and info.