It's a double sided NPT threaded valve so NPT-to-barb adapter. I have some on order and will edit them in once they come in. These ones are the same size barb as the original (3/8): https://www.amazon.com/gp/product/B07NB4PPKX/ref=ox_sc_act_title_1?smid=A2Q5DK7IXTJEDM&psc=1