3.5" NH (NST) Female Swivel x 2.5" NPSH Female Rigid Adapter Aluminum FM25F25T and a polyurethane treated inner

and a polyurethane treated inner coating

makes it "water tight"

Industrial & Fire 2” NPSH Female x 1" NPT Male Fitting Anodized Aluminum

without couplings

You don't need any special tools to operate camlock adapters

3.5" NH (NST) Female Swivel x 2.5" NPSH Female Rigid Adapter Aluminum FM25F25T and a polyurethane treated innerSpecifications Female Side 1 3. 5 NH (NST) Female (National Hose National Standard Thread) Female Side 2 2. 5" NPSH Female (National Pipe Straight Hose) 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