3" NPSH Male x 4" NH (NST) Male Adapter Aluminum HA4525F Change Threads From 1" NPT

Change Threads From 1" NPT Pipe To 1" NST (NH) Fire Hose Hex

Threaded Size (Inside Diameter): 3/4" Male NPT (National Pipe Tapered)

Change Threads From 3" NPT Pipe To 3" NST (NH) Fire Hose Hex

Can be attached to all 6" outlets (pipe threads NPSH/NPT

Then you can simply use your hose as a "camlock hose"

3" NPSH Male x 4" NH (NST) Male Adapter Aluminum HA4525F Change Threads From 1" NPTSpecifications Male Side 1 3 NPSH Male (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 8. 1