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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🚿 Elevate your water game—quiet, smart, and built to perform!

RUNS QUIETLY WORKS HARD - Vibration-dampening mount keeps noise low in any setting
SMART AUTO PRESSURE SWITCH - Hands-free operation with adjustable 17-60 PSI range
CERTIFIED SAFE FOR DRINKING - NSF, UL, CSA approvals guarantee potable water safety
RELIABLE 3 CHAMBER DIAPHRAGM - Ensures smooth, consistent water flow with minimal cycling
BUILT TO LAST WITH 4 YEAR WARRANTY - Trusted by top RV brands for long-term durability

The SEAFLO 12V 3.0 GPM 45 PSI Water Pressure Pump delivers reliable, steady water flow with advanced 3-chamber diaphragm technology. Certified safe for potable water and backed by a 4-year warranty, it features an automatic adjustable pressure switch and ultra-quiet vibration-dampening mount. Ideal for RVs, boats, and off-grid living, it supports up to four fixtures simultaneously and offers self-priming and run-dry protection for versatile installation.

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Manufacturer	SEAFLO
Part number	SFDP1-033-045-33
Item Weight	1.91 Kilograms
Product Dimensions	19.91 x 12.7 x 11.73 cm; 1.91 kg
Item model number	SFDP1-030-045-33
Color	White, Black, Orange
Style	Diaphragm
Material	Metal
Power source type	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

SEAFLO12v 3.0 GPM 45 PSI Water Pressure Pump

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