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a coupler is a double female while a nipple is double male) or two male or female
Couplings Materials - Choose Anodized Aluminum or Brass
but that doesn't mean they can't still be put to good use
We take pride in being green and recycling our scrap fire hose
Industrial & Fire Grade 4” NPSH x 4
3" NH (NST) Female x 3" NPT Male 30 Degree Elbow Aluminum 1" Inch a coupler is a doubleSpecifications Female Side 1 3 NH (NST) Female (National Hose National Standard Thread) Male Side 2 3" NPT Male (National Pipe Tapered) 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
