SEAFLO 33 Series Water 110V AC Pressure Pump - 115V AC, 3.3 GPM, 45 PSI, Self Priming, Smart Pressure Switch, for RV/Caravan/Marine/Industrial Use-NSF, CE & Rohs Certified, UL Listed, 4-Year Warranty
Condition: New
Buy Now, Pay Later
As low as
$13.33
/ mo
Learn more
- – 6-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Nov 2 – Dec 3
Recently Viewed
Features
- [ SPECIFICATIONS ]: Model: SFDPA1-033-045-33 | Voltage: 115V | Flow Rate: 3.3 GPM (12.5 LPM) | Shut-Off Pressure: 45 PSI (3.1 BAR) | Max Draw: 1.0A | Self-Priming Lift: 6 ft | Ports: 1/2"-14 MNPT | Max Temperature: 140F (60C) | Diaphragm: Santoprene | Valves: EPDM | Certifications: NSF/ANSI/CAN 61 & 372, NSF 24, UL 778, CSA C22.2 No. 108 | 4-Year Warranty
- [ INCLUDED COMPONENTS ]: Includes the SEAFLO 33-Series Pump, 50 Mesh Inlet Strainer, (2) 1/2" Barbed Hose Fittings, Wall Plug for 115V AC Power, Mounting Hardware, and User Manual for a complete plug-and-play setup. Perfect for DIY installs in RVs, marine applications, cabins, and household systems with minimal tools required.
- [ NSF UL CSA CERTIFIED FOR RV POTABLE WATER ]: Tested and certified to NSF/ANSI/CAN 61 & 372 (Potable Water Safety), NSF 24 (RV Plumbing), UL 778 (Motor-Operated Water Pumps), and CSA C22.2 No. 108 (Liquid Pumps). Safe for drinking water and compliant with RV and marine plumbing standards across North America.
- [ BACKED BY A 4-YEAR WARRANTY ]: Covered by SEAFLOs 4-Year Limited Warranty, this pump is built for long-term reliability and peace of mind. Designed for tough freshwater demands, its the perfect choice for RVs, boats, cabins, and off-grid living where consistent performance is critical.
- [ SELF-PRIMING AND RUN DRY CAPABLE ]: Self-primes up to 6 feet and can run dry without damage, giving you flexibility to install above water tanks and assurance during fluctuating tank levels. The run-dry safety prevents internal wear, making this pump ideal for rugged and remote system conditions.
- [ ULTRA QUIET WITH VIBRATION DAMPENING ]: Built with a rubber mounting base that isolates vibration and sound, this pump operates at a noise level similar to a standard fan. It's the best choice for low-noise zones like boat cabins, RV sleeping quarters, or off-grid homes where silence is golden.
- [ AUTOMATIC ADJUSTABLE PRESSURE SWITCH ]: Features a smart pressure switch that activates on water demand and stops when not needed. The adjustable PSI range (1760 PSI) lets you fine-tune performance for RVs, boats, and cabins. Enjoy hands-free operation for sinks, showers, toilets, and more.
- [ EASY WALL PLUG-IN FOR INSTANT USE ]: Pre-installed with a standard 115V wall plug, the SEAFLO 33-Series is easy to install with no wiring experience needed. Just plug it into a power outlet and connect the plumbing. Ideal for cabins, small homes, boats, or RVs without onboard 12V DC systems.
- [ #1 TRUSTED OEM PUMP BRAND BY THE RV INDUSTRY ]: SEAFLO is the top OEM pump brand in the U.S. RV and marine industry, used by manufacturers like Forest River, Thor, Winnebago, Grand Design, Brinkley RV, and Rev Group. The 33-Series is factory-installed and trusted for long-term performance.
Brand: SEAFLO
Color: Black, White
Material: Metal
Style: Diaphragm Pump
Product Dimensions: 7.98"L x 5.11"W x 4.84"H
Power Source: Corded Electric
Item Weight: 4.2 Pounds
Maximum Flow Rate: 3.3 Gallons Per Minute
Maximum Lifting Height: 6 Feet
Voltage: 115 Volts (AC)
Brand: SEAFLO
Color: Black, White
Material: Metal
Style: Diaphragm Pump
Product Dimensions: 7.98"L x 5.11"W x 4.84"H
Power Source: Corded Electric
Item Weight: 4.2 Pounds
Maximum Flow Rate: 3.3 Gallons Per Minute
Maximum Lifting Height: 6 Feet
Voltage: 115 Volts (AC)
Global Trade Identification Number: 11, 97
Manufacturer: Seaflo
UPC: 793945652211 793945654697 647336948127
Part Number: SFDPA1-033-045-33
Item Weight: 4.2 pounds
Item model number: SFDPA1-033-045-33
Is Discontinued By Manufacturer: No
Size: 45 PSI
Amperage Capacity: 1.2 Amps
Item Package Quantity: 1
Special Features: Pressure switch
Included Components: Water Pressure Pump, intake strainer, fittings
Batteries Included?: No
Batteries Required?: No
Date First Available: March 16, 2016
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 2 – Dec 3
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Recived on time, all parts present. Works great for my hunting camper with shower, sink, hot water tank, and toilet.
Reviewed in the United States on August 25, 2025 by Stephen
Product works great hooked it up to a three base sink and diverted hose to a one single sink and pumps very well
Reviewed in the United States on August 17, 2025 by Mathew Avalos Mathew Avalos
I am not a plumber, but consider myself pretty handy. This is the 4th and final pump I got from Amazon as part of the camp shower build process (NOT defective, just trying different options). Here's what I learned, hopefully this will be helpful to others who are building outdoor camping showers. 1. The pumps plastic male fittings don't match box store brass fittings. They likely won't leak in plastic-on-plastic installations, but if you're screwing a metal female fitting onto the pump's plastic male fittings, they won't fit and will leak, even though technically both will say 1/2". I used flexible 1/2" hose and some hose clamps to make it work and avoid brass to plastic fittings. 2. This is an on-demand pump. You plug it in, and it will sense if water is being requested anywhere in your system and start pumping. Plan to build a system that's as leak-free as possible or this pump will continue to cycle periodically. I built a prototype garden hose system, which was full of leaks, and this pump kicked on for a second every 15-20 seconds because it assumed I was requesting water (even though it was just leaks). If your system is leak-free, the pump will stay off and silent until you open a valve somewhere in the system. 3. I bit the bullet and bought the $70 PEX crimp tool, which greatly simplified building my shower system. You'll need the crimp tool, some metal ring clamps, and a few baggies of elbows, tees, splicers, and shut-off valves. I was able to build my system with zero leaks. If you're doing this, get white PEX 1/2" line, it can be used for hot/cold/any water, in other words, blue cold line, red hot line, and white neutral line are all identical and differ only cosmetically. Don't think you need to buy red line to run hot water, there's nothing inherently special about color lines - they are all the same, and the only reason they are colored is to tell them apart. 4. The pump is not silent and will vibrate, which means you'll need to attach it to some kind of a solid substrate very firmly. Mine is outside and the noise is not a problem, but if you're doing an RV/interior build, you'll definitely hear it kick on and work, especially if it's bolted to a hollow surface, like under the stairs. Find a way to bolt it to a cinder block or an anvil to dampen the vibration. 5. My system includes a shower and a sink for washing hands (same line, split via a T connector), and this pump is pretty amazing at supplying strong pressure across 10-15 yards through 1/2" PEX lines. You'll be able to take on-demand showers with serious pressure. My wife is still freaking out about the awesomeness of taking pressurized showers in the middle of nowhere. Apparently, gravity/solar showers are huge bummers with ladies who wish to wash their hair, who knew. Overall, if you also grab some flexible reinforced tubing with clamps to bypass brass-to-plastic size fitting size issue, you'll be able to build whatever you need. Strongly recommend.
...
show more
Reviewed in the United States on July 17, 2019 by M. Y
Exactly what I ordered and received. This little pump works great
Reviewed in the United States on August 31, 2025 by Mr T
Bought this for my Moms cabin. It started out great but died after 6 months. I think the everyday, multiple times a day usage and the low flow faucet causing it to cycle on and off was too much for it. When I installed it there were no leaks or issues with it. I think it would be best for the pump to buy the accumulator tank to install with it. It would cycle less helping the longevity of the pump. The company was great to work with and actually reached out to me based on my initial review of the product to help me with the warranty. This company definitely stands behind thier product. I added a star for how helpful they were.
...
show more
Reviewed in the United States on May 14, 2025 by tsmith
UPDATE April 2023: screw this thing! It’s in the garbage now. Went out of town for a weekend and came home to a flooded kitchen. The pump kept cycling on and off until enough pressure built it sprung a leak around a hose clamped vinyl tube fitting going into my hot water heater. Eventually it failed completely and the pump emptied 350 GALLONS of water into my kitchen 🤬 there were absolutely no leaks in the entire system, I checked, triple checked, quadruple checked, checked a million 🤬 times; NO LEAKS EVER. Absolutely no reason the pump should’ve been cycling without a faucet open. CHEAP GARBAGE. Haven’t even had it for a year! DO NOT BUY unless you can put it somewhere it’s not gonna flood your entire kitchen! After a couple of months of using this pump it started cycling on and off every few minutes. Checked for leaks and there wasn’t one anywhere in the plumbing system. Used it this way for a month or so, figuring it must just be how it functions. This morning I woke up and turned on the water, turned it off and it wouldn’t stop cycling. Pulled it apart and discovered TONS of plastic white shavings throughout the pump. Inspected each piece and didn’t discover anywhere in the mechanics that could’ve been grinding these white shavings inside the pump. Only thing I can think of is that these white shavings have been there from the beginning from the manufacturing process. One of these shavings had lodged itself inside the impeller and prevented the pump from working. Pulled all of the white shavings out, reassembled it and now it works alright. I will say that they did make the pump fairly easy to pull apart and service though. Frustrating that a factory defect caused the pump to fail. They include a sediment filter to keep stuff from getting into the pump so they are clearly aware that any fine grained material entering the pump can cause issues so it’s frustrating that they would allow a defect such as this to occur. Other than this issue it has been a fine pump. Only other complaint I have is that it is very loud and obnoxious while operating, but from my research that’s how the majority of these on demand pumps are, so I guess I can’t complain. Beats not having running water at my off grid cabin, I guess.
...
show more
Reviewed in the United States on November 23, 2022 by Chandler Holgate
Great Pump. I use it to pump my 55 gal water drum. It's Automatic: Controlled by pressure switch; which I did not see when I bought it. I highly reccomend. Buy the braided, flexible tubing online. couldn't find them ins store at least minimum 45psi, recommended 60 psi food grade.
Reviewed in the United States on August 21, 2025 by Bdog
Fantastic, works perfect 👌🏼
Reviewed in the United States on July 14, 2025 by Sebastian Martinez