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Sonosailor · 22-06-2004, 05:48

I was flushing the glycol out of my tanks last night, when my water pump failed again. I now have 5 Flo-Jet pumps all in a row that do not work. They are all the 4-piston type.

They all make the right noise, and some even pump up to an accumulator or pressure tank to give that great first burst at the tap. But they soon stop pumping. The noise continues, but the water slows to a trickle.

I've taken them apart, cleaned them, watched the pistons move under power, checked each diaphragm, reassembled; and still they work the same. They even have a slight positive head on the suction side.

I have gone through 4 pumps in two short Canadian seasons. They have not frozen, nor have they been used with tough service. The boat only has two sinks and a shower.

Granted, there was some grit/coral particles in the tank, but now I have a good filter catching that. No chance that the filter is holding back water.

Any ideas? Anybody experienced in fixing or renovating these pumps?

22-06-2004, 05:48	#1
Sonosailor Registered User Join Date: Mar 2003 Location: Fredericton, NB, Canada in the summer and fall; Caribbean in winter and spring aboard Cat Tales. Boat: FP Tobago 35 - Cat Tales Posts: 356	Drinking Water Pumps I was flushing the glycol out of my tanks last night, when my water pump failed again. I now have 5 Flo-Jet pumps all in a row that do not work. They are all the 4-piston type. They all make the right noise, and some even pump up to an accumulator or pressure tank to give that great first burst at the tap. But they soon stop pumping. The noise continues, but the water slows to a trickle. I've taken them apart, cleaned them, watched the pistons move under power, checked each diaphragm, reassembled; and still they work the same. They even have a slight positive head on the suction side. I have gone through 4 pumps in two short Canadian seasons. They have not frozen, nor have they been used with tough service. The boat only has two sinks and a shower. Granted, there was some grit/coral particles in the tank, but now I have a good filter catching that. No chance that the filter is holding back water. Any ideas? Anybody experienced in fixing or renovating these pumps?