4" X 4-1/2" 304/304L Stainless Steel Pipe Nipple - Schedule 40 Cast Iron Fittings 4 Class 125 NPT threads

4 Class 125   NPT threads on fittings conform to ASME B1

PEX Pipe size:_ 3/8"

Groove Dimension Conforms to AWWA C606

1 Air Eliminators at the end of the short main or the main running to the warm side of the building

4" X 4-1/2" 304/304L Stainless Steel Pipe Nipple - Schedule 40 Cast Iron Fittings 4 Class 125 NPT threadsmaterial: Stainless Steel connection: Threaded Thread Type: Male Features: Forged stainless steel material conforms to ASME A182 Forged stainless steel fitting dimensions conform to ASME B16. 11 NPT threads conform to ASME B1. 20. 1 Socket weld fittings conform to ASME B16. 11 Forged stainless union conform to MSS SP 83 Forged stainless outlets conform to MSS SP 97 Forged stainless socket weld Inserts conform to MSS SP 79 Manufacturing facility is ISO