4" NPT Female x 3" NH (NST) Male Adapter Aluminum SM400F The NPSH male side can

The NPSH male side can hook into NPSH only

5" NPT Pipe To 2" NPSH Pipe Hex

Couplings - NH / NST (Fire Hose Threads) or IPT / NPSH (Straight Pipe Threads)

5" NPT Male Pipe Pin Lug Adapter

4" NPT Female x 3" NH (NST) Male Adapter Aluminum SM400F The NPSH male side canSpecifications Female Side 1 4 NPT Female (National Pipe Tapered) Male Side 2 3 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