SEAFLO 33 Series DC Diaphragm Pump – 4-Year Warranty! 12V, 3.0 GPM, 45 PSI, Self-Priming, Run Dry Safe, Built-In Pressure Switch | Ideal for Marine, RV, and Water Systems

My truck has a short bed so I had to compromise and take out my spare tire. I originally had a pressurized water tank in the bed, but took it out because it took up too much of what little space available and I blew the tank when I put too much pressure. But that's another story.I am running a SeaFlo 33 series pump with an accumulator tank. I have a two switch set up. One in the cab and another in the bed by the passenger side tail light. I like to be able to cut off the power from the cab.I did not come up with this design, but was inspired by Sponsored By Wifey's YouTube Channel. I based my build on his video "A look at my onboard water system on my Toyota 4Runner" .I am two water tanks. A 4 gallon mounted above the receiver hitch and a 3 gallon right behind the differential and near the crossmember. Both tanks are 6" PVC. They connect to the SeaFlo 33 Series via a garden hose splitter. I am able to control which tank I am drawing water from.The intake is also the outflow and controlled by a 4 faucet manifold. This allows me to fill either or both tanks with little trouble. Had to do some leakage mitigation; just a minor inconvenience.The pump and accumulator is mounted between the two tanks and is also connected to the manifold.After much trial and error, my system works well.Now for the review of the pump. The SeaFlow series by itself is a good pump. To be honest, I have not operated the pump without an accumulator. Based on the the recommendations I bought the pump and accumulator and installed both at the same time. The flow is strong. The self priming feature is great and The fact that I do not have to worry about the pump running dry is a relief.The pump itself is hefty. I feels durable. My only concern are the plastic fitting for connecting your hose line to. Other than that, it seems durable and well made.The pump has been working well and with the accumulator is very quiet. I am very happy with this pump.

Only 2 months in, so durability not evaluated yet.Overall whilst I haven't experienced any measure of longevity yet, the "fit, form and function" of this fresh pump seems to be quite the value for basic needs such as mine. Surely not the same total experience as a higher flow pump with multiple diaphragms and increased noise abatement, but for those who don't need such a premium experience (with quite dear costs) this pump is quite nice and presents much better value IMO.Bottom line:- Noise level: Not measured, but quite acceptable to me. With it mounted directly under the berth I *do* hear it throughout the boat, however at absolutely minimal volumes that I don't foresee waking anyone except the lightest sleeper. If the tank goes empty and it starts pushing air it will hammer a bit. Some day I'll break out the db meter and measure this.- On demand sensing works great - when I turn on the faucet, water is there and continues to be there. This is perhaps the most important aspect to creating an "at home" experience - no footswitches or pumps, not buttons, just a regular ole faucet.- No hammering or surging even with just a single diaphragm until water gets low - if it starts drawing air then it hammers. To be frank I like this as I don't have a gauge in my fresh tank, so this acts as my alert that water if very low.- While I have only two faucets, the flow is quite sufficient. Wash dishes, even rinse down cabin floor or countertop without any problem.- Same install as any other pump, quite easy particularly when combined with pex.I have to remind myself to take some photos / videos for everyone. I used this to replace a manual freshwater plumbing system in my sailboat and honestly I kind of hate the maritime industry, so when I saw an item that was more appropriately priced for it's design and manufacturing costs, I decided to give it a try.I'm very glad I did, this little guy so far is proving itself out very nicely. I've already recommended it to several rag haulers who are still pumping faucets.

This pump is AWESOME. Works way better then the old one. Wish I had put it in long ago, even before the old one stopped working. install was a snap, they give you about every fitting you could ever need.

So first off. This pump replaced a freeze casualty. Long story. So now it is directly next to the sink. I was paranoid after the loss of the last one, again long story. I wanted to know when the pump was kicking on and off. Well even with it out in the open, I can barely hear it. Sometimes I have to touch it to confirm it’s on.The only negative is it does seem weaker than advertised PSI. I haven’t tested it yet as it has performed well enough for my needs. And the quiet part is amazing. Most definitely will be returning to this company. Heard good things and if longevity is there. I’ve found my pumps!So after a few months of service. It is weaker than advertised psi. I should have written it down but it maxed at 29 psi with 12 v even at the motor.The new discovery is that it can only handle 5-10 minutes on then 5-10 minutes off. I scoured the Amazon page looking for the posted duty cycle. Did not find it. But it’s on the motor. 5 on 10 off. Still a good pump but maybe not enough thermal dissipation for the motor. I’ll keep it, but I need a better duty cycle one.

Just installed it. So far, works great and is very quiet.

Works great, easy to install, quiet operation. Installed in my camper, exactly what we needed