Aluminum 4" NH to 2 1/2" NH Double Female Threads_NPSH x NPSH 11 1/2 threads per inch

11 1/2 threads per inch and male 1 1/2 inch NH

pipes or valve fittings

outside zipper pocket

Carbon Steel 3" Flange x 2 1/2" Male NH

Aluminum 4" NH to 2 1/2" NH Double Female Threads_NPSH x NPSH 11 1/2 threads per inchAluminum adapters are fabricated from seamless extruded 6061 T6 aluminum and hard coat anodized per MIL A 8625 Type III, Class 1. Threads have a blunt start Higbee cut with indicators on adjacent lugs. Part identifications are permanent and stamped prior to hardcoat. Adapters and components meet the requirements of NFPA 1963. A double swivel adapter will not swivel or rotate once both ends are tightened to the male connections. The Safe Water Drinking