I guess they cheaped out on my coach as I havn't ever seen any brass on my piping at all, and I have been behind my hot water heater as the cheap plastic fitting cracked and leaked and had to be replaced. Even winnebago could not get the correct part for me to replace. Home Depot to the rescue. And yes it is tight quarters.
2001 32-V Suncruiser,Ford V-10, 310 HP, 4 Koni FSD's, KVH Tracvision,trickle charge, awning travel lock, 1 dinning room slide; no roof leaks, 03malibu toad sometimes, Blackhawk all terrain towbar, Roadmaster brake Pro,1 wife,1 westy, life is good!