Aluminum 4 1/2" NH to 4" NPT Double Female Female Threads_NH Approx hole size 1" x

Approx hole size 1" x 1/2"

Compatible part number - SF400F

2 1/2 inch is more common than 3 inch hoses

For use up to 175 PSI (water only) at 70° F

Carbon Steel 4" Flange x 4 1/2" Male NH

Aluminum 4 1/2" NH to 4" NPT Double Female Female Threads_NH Approx hole size 1" xAluminum 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