End item model tm 1800 aircraft deicer
No other part numbers with same form, fit, and function found.
A fitting in the form of the letter y with each branch usually fixed at 45 degrees (0.78539 radians) to the run. It has identical flanged ends.
NSN 6620-01-134-7387
NSN 5905-01-310-7629
NSN 6320-00-857-4073
NSN 5835-01-463-2334
NSN 6150-01-236-5818
NSN 6610-01-150-7018
NSN 5915-01-438-0578
NSN 4140-01-633-4037
NSN 5998-01-576-9430
NSN 5910-01-633-9963
NSN 2925-01-183-2897
NSN 6610-01-106-5012