3.5" NPSH Male x 3.5" NPSH Male Adapter Aluminum FM25F15F Available Threaded Sizes (Inside Diameter):

Available Threaded Sizes (Inside Diameter): 4" Female NPT (National Pipe Tapered)

Lining - Inside Rubber

Need a double female Fire Hose adapter

**UL Listed to 400 psi and FM Approved

3.5" NPSH Male x 3.5" NPSH Male Adapter Aluminum FM25F15F Available Threaded Sizes (Inside Diameter):Specifications Male Side 1 3. 5 NPSH Male (National Pipe Straight Hose) Male Side 2 3. 5 NPSH Male (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 Standards 236 8. 1 Through