"Peggie Hall" writes:

What's to keep the screen from becoming clogged up, Lew? Tell me more
about this, 'cuz I'm having a hard time visualizing any screen in a
holding tank that wouldn't cause more problems than it solves.
snip

"Screen" may be a little bit of a misnomer.

Actually it is a 1/4" thick sheet of polypropylene with 1/4" dia holes on a
60 degree diamond pattern.

A very common coarse screening material in the chemical industry.

Anything that enters the pumpout lift tube has to get thru a 1/4" dia hole
first.

To paraphrase the story of the three bears, not to big, not to small, just
the right size for the job at hand.

HTH


--
Lew

S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland)
Visit: http://home.earthlink.net/~lewhodgett for Pictures

What's to keep the screen from becoming clogged up, Lew? Tell me more
about this, 'cuz I'm having a hard time visualizing any screen in a
holding tank that wouldn't cause more problems than it solves.

snip

"Screen" may be a little bit of a misnomer.

Actually it is a 1/4" thick sheet of polypropylene with 1/4" dia holes on a
60 degree diamond pattern.

A very common coarse screening material in the chemical industry.

Anything that enters the pumpout lift tube has to get thru a 1/4" dia hole
first.

To paraphrase the story of the three bears, not to big, not to small, just
the right size for the job at hand.

Hmmmmm... Maybe...chemicals don't have fats in 'em. I dunno why it would
be necessary as long as nothing gets flushed that shouldn't be...and if
something ever is, it won't be any more fun to clean the screen than it
is to clean out a plugged discharge fitting. But, I'll keep an open
mind, and be very interested in knowing whether you have any problems
with it over time.

Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://www.seaworthy.com/html/get_ri...oat_odors.html

"Peggie Hall" writes:

Hmmmmm... Maybe...chemicals don't have fats in 'em. I dunno why it would
be necessary as long as nothing gets flushed that shouldn't be...and if
something ever is, it won't be any more fun to clean the screen than it
is to clean out a plugged discharge fitting. But, I'll keep an open
mind, and be very interested in knowing whether you have any problems
with it over time.

It is not an original design by any means, first saw it used in a commercial
holding tank on my last boat for over 10 years.

BTW, the screen is about 36" x 42". By the time than amount of surface area
would get plugged, my ashes will long ago have been cast to the winds.


--
Lew

S/A: Challenge, The Bullet Proof Boat, (Under Construction in the Southland)
Visit: http://home.earthlink.net/~lewhodgett for Pictures