Can you adjust the "shut-off" pressure down from 45 PSI?

Locate the allen screw on the pressure switch located on the front of the pump, use an allen key to turn it clockwise to increase pressure or counterclockwise to decrease pressure.

Can you hook up to 3/4 pex?

The output is 1/2" MNPT. You would need a 1/2"FNPT to 3/4" Pex Fitting

could this pump, pump water up 6 feet

Yes, this pump will both pull and push water up 6 feet.

Why will my pump make noise but not pump water. It has been dry for 5 days of travel. Now we are parked and it’s not working.

2 possible problems come to mind. The pump is self priming, as long as there is water in the tank getting to the pump it should work. There is a possibility that it was installed the wrong way, there is an intake opening and an output opening. Check that, it could be the problem. The pump could also be defective if there is water getting to it and it is installed correctly but still not working...

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Seaflo 12V DC 1.2 GPM 35 PSI 21-Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine, Black

Seaflo 12V DC 1.2 GPM 35 PSI 21-Series Diaphragm Water Pressure Pump for Caravan/RV/Boat/Marine, Black

Product ID: 252226061

Details

Brand
SEAFLO
Colour
Black
Material
Plastic Metal
Product dimensions
16.5L x 9.7W x
Style
Diaphragm Pump

⚡12V DC power efficiency

💧1.2 GPM high flow rate

🔄Auto start/stop pressure switch

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€ 106.48

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Pump up your water game with seamless power and smart control!

EFFORTLESS FLOW - Delivers a steady 1.2 gallons per minute for all your water needs.
SMART AUTOMATION - Built-in 35 PSI pressure switch starts and stops pump automatically.
COMPACT POWERHOUSE - Sleek design fits tight spaces without sacrificing performance.
DURABILITY MEETS SAFETY - Thermal protector allows dry running without damage—built to last.
WHISPER QUIET OPERATION - Smooth, silent pumping keeps your environment peaceful and professional.

The Seaflo 12V DC 1.2 GPM diaphragm pump offers efficient, automatic water pressure management with a built-in 35 PSI pressure switch and thermal protection. Compact and quiet, it’s engineered for marine, RV, and caravan use, delivering reliable flow with low power consumption and durable, professional-grade construction.

Specifications

ASIN	B00DLKT4OO
ASIN	B00DLKT4OO
Best Sellers Rank	#12,889 in Sporting Goods ( See Top 100 in Sporting Goods ) #14 in Boat Plumbing
Brand Name	SEAFLO
Color	Black
Customer Reviews	4.4 4.4 out of 5 stars (1,755)
Customer reviews	4.4 4.4 out of 5 stars (1,755)
Date First Available	23 July 2013
EU Spare Part Availability Duration	4 Years
Flow Rate	1.2 Gallons Per Minute
Global Trade Identification Number	00637776645502, 00640674580349, 00787721093749, 00810039498149, 06410038780111
Is Discontinued By Manufacturer	No
Item Dimensions L x W x H	16.5L x 9.7W x 6.4H centimeters
Item Weight	680 g
Item model number	SFDP1-012-035-21
Manufacturer	SEAFLO
Manufacturer	SEAFLO
Manufacturer Part Number	SFDP1-012-035-21
Material Type	Plastic Metal
Maximum Lifting Height	4 Feet
Model Number	SFDP1-012-035-21
Power Source	DC
Product Dimensions	16.51 x 9.65 x 6.35 cm; 680.39 g
Product Style	Diaphragm Pump
UPC	640674580349 787721093749 615200881986 637776645502
Voltage	12 Volts (DC)

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