4.5" NPSH Female (Rigid Long Handle) x 2.5" NH (NST) Male Adapter Aluminum DMH4040 but can be added on

but can be added on to your solar panel array) can be found at 12 volts and are rated for very low wattage

this is the best bang for your buck

5” NPT x 2” NPT Double Male Fitting Anodized Aluminum

Change Threads From 1" NPSH Pipe To 1" NPT Pipe Hex

A pipe coupling can be stepped or reduced in internal diameter to accept pipes of different sizes

4.5" NPSH Female (Rigid Long Handle) x 2.5" NH (NST) Male Adapter Aluminum DMH4040 but can be added onSpecifications Female Side 1 4. 5 NPSH Female (National Pipe Straight Hose) Male Side 2 2. 5 NH (NST) Male (National Hose National Standard Thread) Working Pressure 300PSI Max Test Pressure 1000PSI Max Material T 6061 Aluminum (Aircraft Grade) Finishing Anodized (99. 9% Lead Free) NFPA Standards 1963, 4. 12, 5. 1 5. 6. 4 (Corrosion Resistance) Military Standards MIL A 8625 Type III, Class 1 Industrial Standards International ASTM B221 UL Labs