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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Water Diaphragm Self Priming Pump 3.0 Gallons/min (11.3 Lpm) 45 PSI New Rv/Marine 12 Volt Dc / 12 V Demand Fresh

Water Diaphragm Self Priming Pump 3.0 Gallons/min (11.3 Lpm) 45 PSI New Rv/Marine 12 Volt Dc / 12 V Demand Fresh

Product ID: 577955458

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Details

Brand
Seaflo
Colour
White Black
Material
Metal
Style
Diaphragm
Product Dimensions
19.9L x 12.7W
Power Source
dc

⚡12V DC power

💧3.0 GPM flow rate

🔧45 PSI pressure

Description

💧 Power your adventures with quiet, certified, and reliable water flow!

SMART DEMAND PUMP - Automatic adjustable pressure switch for hands-free, on-demand water flow.
EFFORTLESS SELF PRIMING - Up to 6 feet priming height for flexible installation anywhere.
MULTI FIXTURE POWERHOUSE - Supports up to 4 water fixtures simultaneously without pressure drop.
QUIET SMOOTH OPERATION - Vibration-dampening mount keeps noise low for peaceful RV or marine life.
CERTIFIED SAFE FOR DRINKING - NSF, UL, CSA certified to ensure pure, potable water on the go.

The SEAFLO Water Diaphragm Self Priming Pump delivers a robust 3.0 GPM flow at 45 PSI with a 12V DC power source, designed specifically for RV, marine, and off-grid freshwater systems. Certified safe for potable water and backed by a 4-year warranty, it features a durable 3-chamber diaphragm, self-priming up to 6 feet, and an ultra-quiet vibration-dampening mount. Trusted by top RV manufacturers, it supports multiple fixtures simultaneously and includes an automatic pressure switch for seamless, hands-free operation.

Specifications

Brand	Seaflo
Colour	White, Black, Orange
Material	Metal
Style	Diaphragm
Product Dimensions	19.9L x 12.7W x 11.7H Centimeters
Power Source	dc
Item Weight	1.91 kg
Maximum Flow Rate	3 Gallons Per Minute
Maximum Lifting Height	6 Feet
Voltage	12 Volts (DC)
Global Trade Identification Number	00637776648008, 00647336944273, 00793945653393
Manufacturer	SEAFLO
UPC	793945653393 039923319654 647336944273 637776648008
Item model number	SFDP1-030-045-33
ASIN	B00P8BE6S8

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