2.5" NPSH Female Pipe Lightweight Aluminum Fire Cap 4" Inch NH (NST) 2-1/2" hose is the most

2-1/2" hose is the most popular size hose because of it's easy handling and large water flow capabilities

4" NPTF Male (National Pipe Tapered Fuel)

Male Side 2 – 4” NH (NST) Male (National Hose / National Standard Thread)

1" Aluminum Maroon Fire Hose Nozzle For Industrial & Firefighting Use

2.5" NPSH Female Pipe Lightweight Aluminum Fire Cap 4" Inch NH (NST) 2-1/2" hose is the mostSpecifications Female Side 2. 5 NPSH Female (National Pipe For 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 8. 2 USDA Standards 5100 190C Tables 1 4 Origin