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

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Seaflo42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V/24V 3.0GPM 55PSI (12 Volts)

Seaflo42 Series Diaphragm Pump with Bypass for Reduced Cycling 12V/24V 3.0GPM 55PSI (12 Volts)

Q: 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

Q: 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

Q: 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.

Product ID: 205500056

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Details

Brand
Seaflo
Colour
Orange
Material
Polypropylene
Style
Diaphragm
Product dimensions
20.2L x 12.5W
Power source
Adaptors

⚡12V/24V dual voltage power

💧3.0 GPM high flow rate

🔄Bypass tech reduces cycling

Description

💧 Pump smarter, last longer — the Seaflo42 sets the flow standard!

READY FOR ANYTHING - Self-priming and run-dry capable for ultimate reliability
CONFIDENCE BUILT IN - Industry-leading 4-year warranty for peace of mind
FLOW THAT KEEPS PACE - 3.0 Gallons Per Minute ensures efficient, steady water delivery
SMART CYCLING FOR LONGEVITY - Bypass technology minimizes pump cycling, extending lifespan
POWER THAT ADAPTS TO YOUR NEEDS - Dual 12V/24V compatibility for versatile use anywhere

The Seaflo42 Series Diaphragm Pump delivers a robust 3.0 GPM flow at 55 PSI, powered by flexible 12V/24V input. Featuring advanced bypass technology to reduce cycling, it ensures durability and efficiency. Certified UL 778 & CSA 22.2, self-priming, and run-dry capable, this polypropylene and stainless steel pump is backed by a 4-year warranty, making it the reliable choice for professional-grade water pumping needs.

Specifications

Manufacturer	SEAFLO
Part Number	SFDP1-030-055-42
Product Dimensions	20.24 x 12.5 x 11.1 cm; 2.18 kg
Item model number	SFDP1-030-055-42
Size	12 Volts
Colour	Orange
Style	Diaphragm
Material	Polypropylene (PP), Stainless Steel
Power Source	Adaptors
Voltage	12 Volts
Item Package Quantity	1
Flow rate	3 Gallons Per Minute
Included Components	51S01 Filter, 51F01 Fitting
Batteries included?	No
Batteries Required?	No
Item Weight	2.18 kg

Have a Question? See What Others Asked

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?

Automatic shut off?

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

What is the wattage need when using a power supply

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