Yong heng water pump brass elbows

take the broken elbow to the hardware store, & use it to find the correct size threads, dont be bashful if you cant find it , ask for help from a employee, also buy an easy out to remove the broken part , good luck

PS, you may be SOL, on the threads , Steve = Humdinger on this forum is really good on threads & compressors pm him 

I'm fairly certain that the thread size is 1/8 BSPP and the barb is 8mm. It may sound a little odd having imperial threads when most of the other fittings being metric but the makers tend to use whatever is readily available and these general use spigots universally have imperial pipe threads. If you can't find anything local this might help. https://www.aliexpress.com/item/32900354511.html?spm=a2g0o.detail.1000013.15.499649cehv26RO&gps-id=pcDetailBottomMoreThisSeller&scm=1007.13339.169870.0&scm_id=1007.13339.169870.0&scm-url=1007.13339.169870.0&pvid=b312ddb9-34a5-450d-942a-4375b9742649&_t=gps-idcDetailBottomMoreThisSeller,scm-url:1007.13339.169870.0,pvid:b312ddb9-34a5-450d-942a-4375b9742649,tpp_buckets:668%230%23131923%230_668%23808%233772%2396_668%23888%233325%237_668%232846%238112%23576_668%232717%237559%2317_668%231000022185%231000066059%230_668%233468%2315614%23536

I have 2 yong hengs and bought extra parts . https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20201129155213&origin=y&SearchText=yongheng