Aluminum 4 1/2" NH to 4" NPT Double Female Female Threads_NH Special reverse construction to reduce

Special reverse construction to reduce friction loss and a lighter hose

Approx hole size 1" x 1/2"

The design of the flushing elbow is made to divert the main water force away from traffic and ground cover

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

Brass is commonly chosen for corrosion resistance

Aluminum 4 1/2" NH to 4" NPT Double Female Female Threads_NH Special reverse construction to reduceAluminum 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