Duck Bill Valve replacements - Vacuflush

they're one size fits all.. boatfix or any chandlery should have them in stock. you need 2 pairs per pump.
 
yep, what Pascal said
Items number 10 in this pic
Vacpump.jpg
 
You need 4 not 2. Pain in the butt. Look at the drawing.
 
I read somewhere some great advice. Before you tackle this job make sure you first flush a cup of laundy detergent with a full bowl of water. Then flush a cup of bleach with a bowl of water. If you take these steps, the job is almost pleasant.....not really, but it's way less horrible
 
It's not that difficult to change all 4; the hardest part is usually just getting into position to work on the damn things [I'm less limber each time I have to do this]. Otherwise, the only difficulty is in removing the clamps, pulling the hose, then putting it back together without it leaking. I did the last one about a month ago - took about 15 minutes.
 
they are usually sold by pairs, that's why i said TWO PAIRS. the macerator uses the same DBs, but jsut two.. the vac pump uses four.

they're easy to replace,, just unclamp the hose and unscrew the fittings. it's a quick and easy job. clean up the fittings and when reinstalling put a little bit of liquid soap on the flanges so that they dont bind and get deformed when to screw the fittings. dont' overtighten.

now, if when you bought the boat you paid more attention to drink holders and flat screens than serviceabilty, then ... you may need to learn yoga first! :)
 
" ... first flush a cup of laundy detergent with a full bowl of water. Then flush a cup of bleach with a bowl of water. " -- The_Mayor

Instead of dumping that stuff "down the drain", you should instead flush down a gallon of ( the cheapest, bargain store brand ) white vinegar. This will control the odor, and not introduce problematic chemistry into the system. Likely cheaper, too. Bleach is definitely not going to benefit your system.
 
White vinegar is used to dissolve mineral buildup that accumulates inside the hoses. It won't have much, if any, effect on odor.
 
Awesome all! Much appreciated. Although my searches on the net seem to come up empty. May need to call Boatfix directly and see what they have. Glad to hear a simple job, hoping this stops the constant "ka-chunking" every 15 minutes... and yes, I checked the bowl for leaks, none.
 
Oh, question...

Seeing as we will be winterizing in about 4 weeks, should I wait to replace these until spring or do them now, or doesn't it matter really?
 
quote:
Originally posted by JimPend

I've never seen them sold in pairs.

Click to expand...
I've only seen OEM Sealand Duckbills sold in pairs.
 
Thanks captainwjm. I finally found them online... must have been mistyping the search or something. $25 per pair, although there looks like there is 2 types, so need to check what model I have. I assume the Sealand Duckbills work with the older vacuflush's?
 
Alright, so small problem, looks like the tag that would tell me what model pump I have it no longer on it. Any suggestions? I measured the width of the pipes and they are 1.5 inches. Anyone know if the regular version of the valve is 1.5 inches wide?
 
Here ya go:

http://www.boatfix.com/shop3/store/viewItem.asp?idProduct=28711

They come (2) in a pack. For the VacuFlush vacuum pump, you need (2) packs - (4) duckbills total - two on the inlet side and two on the discharge side. For the "T" series pump to empty out your holding tank, you only need one pack - (2) pieces, one on the inlet side and one on the discharge side.

They're basically a one size fits all - they'll fit Dometic, SeaLand, and Mansfield vacuum pumps (all used for VacuFlush toilets), as well as the "T" series discharge pump.
 
Awesome, thanks for that! When I switch these out, do I need to worry about any "fluid" draining back out in the bilge? I read someone say that only do one side at a time. Anything I need to know about the canister?
 
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