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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💦 Power Your Adventures with Quiet, Certified Confidence!

RELIABLE 3 CHAMBER DIAPHRAGM - Engineered for smooth, consistent water flow without cycling interruptions
ULTRA QUIET VIBRATION DAMPENING - Noise-reducing mounts keep your RV or boat peaceful and serene
CERTIFIED SAFE FOR DRINKING WATER - NSF, UL, and CSA certifications guarantee potable water safety and RV compliance
SELF PRIMING RUN DRY PROTECTION - Flexible installation with up to 6 feet priming and damage-free dry runs
SUPPORTS MULTIPLE FIXTURES SIMULTANEOUSLY - Delivers steady pressure to up to 4 water outlets without drop-offs

The SEAFLO 12V 2.8 GPM 45 PSI Water Pressure Pump is a top-tier, NSF/UL/CSA certified diaphragm pump designed for RVs, boats, and off-grid living. Featuring a robust 3-chamber design, automatic adjustable pressure switch, and ultra-quiet vibration dampening, it delivers reliable, steady water flow to multiple fixtures simultaneously. Backed by a 4-year warranty, it offers self-priming up to 6 feet and run-dry protection, making it the trusted choice for professional-grade portable water systems.

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Manufacturer	SEAFLO
Part Number	SFDP1-033-045-33
Product Dimensions	19.91 x 12.7 x 11.73 cm; 1.91 kg
Item model number	SFDP1-030-045-33
Colour	Black
Style	Thermal
Material	EPDM, Santoprene
Power Source	dc
Voltage	12 Volts
Item Package Quantity	1
Flow rate	3 Gallons Per Minute
Special Features	Automatic pressure switch
Included Components	(1) SEAFLO 33-Series Diaphragm Pump (1) Set of Instructions (2) 1/2" Barbed Hose Adaptors (1) 50 Mesh Inlet Strainer
Batteries included?	No
Batteries Required?	No
Item Weight	1.91 kg

Seaflo 12v 2.8 GPM 45 PSI Water Pressure Pump by Seaflo

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