4" NPSH Female x 4" NH (NST) Male Adapter Aluminum DMH6045F you would need a standard

you would need a standard electrical box at your local hardware store

The working pressure for the hose is 250psi for working pressure and 500psi for testing

3" Male Camlock To Male Pipe Adapter

Test Pressure - 250 psi

4" NPSH Female x 4" NH (NST) Male Adapter Aluminum DMH6045F you would need a standardSpecifications Female Side 1 4 NPSH Female (National Pipe Straight Hose) Male Side 2 4 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 Standards 236