Dave,

as much as it pains me to say, this time I am in complete agreement
with you :)

I replaced mine years ago and wondered why I did it. And just last
week, I broke the hose barb off it (cabinets outside the van, stove
top sink unit removed from cabinet, moving it around and
bumped...grrr) so now I can make something up and get rid of the p trap.

alistair

On 26-Jun-10, at 2:38 PM, Dave Mcneely wrote:

And why do these campers have a p-trap at all?  They do not connect
to a sewer, they drain right out to the outside only.  there isn't
even any provision for connecting to a sewer.  When I'm out in the
boonies, I usually just let the sink drain onto the ground.  The
water is gray water, but not very dirty.  At a developed campground,
I put a bucket under the drain, and empty that in an appropriate
place (usually into a bush or onto grass, if there is no reason not
to -- which is what I would do with dish washing or hand washing
water if I were doing outside what I do in in the camper sink).

A trap just seems like unnecessary complication when something
eventually goes wrong (and maybe promotes something going wrong, as
mentioned with bio-growth in the post below).

DMc