4" NH (NST) Male x 4" NH (NST) Male Adapter Aluminum HA20S25F A combination of pipe adapters

A combination of pipe adapters are recommended for low-pressure discharge and suction service for various compatible liquids and not for compressible products like air

Couplings Materials - Choose Anodized Aluminum or Brass

But this system moves so much water

1" NST (NH) Female Hose x 1" NPT Male Pipe Adapter

4" NH (NST) Male x 4" NH (NST) Male Adapter Aluminum HA20S25F A combination of pipe adaptersSpecifications Male Side 1 4 NH (NST) Male (National Hose National Standard Thread) 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