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decodeddiesel · 11-08-2001, 10:33 AM

Nope, actually 1/4" NPT has the same ID as 1/2" barbs. 3/8" is actually a reducer. think of it this way, 1/2" barbs are designed to fit into 1/2" ID, so the OD of the barbs is just a hair over 1/2". NPT refers to the ID of the fitting. Therefor 3/8" NPT is 3/8" ID and about 3/4" OD. It is kinda confusing, but not that difficult.

11-08-2001, 10:33 AM	#6
decodeddiesel Cooling Savant Join Date: Oct 2001 Location: classified Posts: 534	Nope, actually 1/4" NPT has the same ID as 1/2" barbs. 3/8" is actually a reducer. think of it this way, 1/2" barbs are designed to fit into 1/2" ID, so the OD of the barbs is just a hair over 1/2". NPT refers to the ID of the fitting. Therefor 3/8" NPT is 3/8" ID and about 3/4" OD. It is kinda confusing, but not that difficult. __________________ ...i hurt... do me a favor, disconect me... they can re-work me but i'll never be top of the line again ...i'd rather be nothing...