Lousy house pressure, if I connect outlet of garden faucet to inlet of this pump will I get better outlet pressure to drive an impact type sprinkler?

No it will not do anything for you... This is also 12V not 110 so maybe you should look into your houses old plumbing or contact city about your low water pressure

Yes it has a pressure switch that shuts it off when you shut the flow of water off

What is the power usage for this motor? Amp hours would be best, but pretty much any measure would be helpful.

This is a 12V DC water pressure pump. The max amperage draw is 7.5 Amps. All technical specifications on the pump can be found here: http://seaflo.com/en-us/product/detail/609.html

What is the wattage need when using a power supply

On the placard for the product that I bought, as well as in the product specs, the amperage is listed as 3.5A, with a maximum of 7.5A(presumably when the pump starts). Ohm’s law states that P=VI, so this yields an average of 12V*3.5A = 42W with a worst case of 12V*7.5A=90W.

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42 Series On Demand Water Pressure Pump 12V 3.0 GPM 55PSI, with Bypass for Reduced Cycling, Self-Priming, For Marine/RV/Off-Grid, CE & Rohs Certified, UL Listed, 4-Year Warranty

42 Series On Demand Water Pressure Pump 12V 3.0 GPM 55PSI, with Bypass for Reduced Cycling, Self-Priming, For Marine/RV/Off-Grid, CE & Rohs Certified, UL Listed, 4-Year Warranty

Product ID: 26770777

Details

Brand
SEAFLO
Color
Orange
Item Weight
4.8 Pounds
Maximum Flow Rate
3 Gallons Per
Maximum Lifting Height
6 Feet
Power Source
DC

⚡12V DC power for efficient energy use

💧3.0 GPM flow rate for steady water delivery

🔧Self-priming up to 6 ft for versatile installation

619.30 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚿 Elevate your water game—quiet, reliable, and ready wherever life takes you!

RELIABLE 3 0 GPM FLOW - Consistent water pressure at 55 PSI keeps your marine or RV system running smoothly without interruptions.
PLUG PLAY INSTALLATION - Standard 1/2"-14 MNPT ports and mounting footprint make setup seamless in boats, RVs, and tiny homes.
ENERGY SMART 12 V OPERATION - Optimized for low power draw (7.0A), perfect for off-grid and mobile lifestyles demanding efficiency.
QUIET SMOOTH PERFORMANCE - Internal bypass reduces cycling and noise, ensuring peaceful water flow in tight living spaces.
BUILT TO LAST WITH 4 YEAR WARRANTY - Industry-leading durability backed by CE, RoHS, UL certifications, and a 4-year limited warranty for peace of mind.

The SEAFLO 42 Series On Demand Water Pressure Pump delivers a robust 3.0 GPM flow at 55 PSI powered by 12V DC, designed for marine, RV, and off-grid applications. Featuring self-priming up to 6 feet, an internal bypass for reduced cycling, and a quiet Santoprene diaphragm, it ensures smooth, efficient water delivery. Certified safe for potable water and backed by a 4-year warranty, this pump combines durability, easy installation, and energy efficiency for modern mobile lifestyles.

Specifications

ASIN	B01CQ7DD0S
Best Sellers Rank	#3,724 in Automotive ( See Top 100 in Automotive ) #3 in RV Water Pumps & Accessories
Brand Name	SEAFLO
Color	Orange
Customer Reviews	4.4 4.4 out of 5 stars (2,250)
Flow Rate	3 Gallons Per Minute
Included Components	51S01 Filter, 51F01 Fitting
Item Dimensions L x W x H	7.97"L x 4.92"W x 4.37"H
Item Weight	4.8 Pounds
Manufacturer	SEAFLO
Manufacturer Part Number	SFDP1-030-055-42
Material Type	Pump head: nylon. Pump head cover: PPS. Motor housing: polypropylene. Valves/seals: EPDM. Diaphragm: Santoprene
Maximum Lifting Height	6 Feet
Model Number	SFDP1-030-055-42
Power Source	DC
Product Style	3.0 GPM - 55 PSI
Specific Uses For Product	Marine, RV, Off-Grid
UPC	647336945584 715934427631
Unit Count	1.0 Count
Voltage	12 Volts (DC)

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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619.30 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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