Aluminum 4" Female NH to 4" Male NPT Pick One Side_5 inch and 6 inch

and 6 inch

Meets National Fire Equipment System (NFES #0416)

It's usually installed on the inlet side (Suction Side) of a water pump to keep it from losing it's prime during the off cycle

Mounting hardware not included

Aluminum 4" Female NH to 4" Male NPT Pick One Side_5 inch and 6 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. The Safe Water Drinking Act section 1417 requires "Lead Free" products to be a minimum of 99. 75% lead free. Aluminum Female to