BearBranch, those aren't exactly what I was talking about. I worked in the poultry industry for 19 years and I've never seen any exactly like you posted. The ones I'm talking about hang straight down. What kind are those?

These are what I'm talking about. I've seen them screwed into the bottom of 5 gallon buckets, or used on PVC like this:

https://www.qcsupply.com/hanging-tube-waterer-6-nipples.html?utm_medium=cpc&utm_source=google&utm_campaign=Google|Shopping|NB|All_Products|ALL|ALL|ALL|FM&utm_content=490958302923&utm_term=&gclid=Cj0KCQjw98ujBhCgARIsAD7QeAhi9VjYKRsBVAAOIKOyDOan6X01nBDUsL4XFCjdZXbCEBtGpd1G0ewaAufIEALw_wcB


If my people, who are called by my name, will humble themselves and pray and seek my face and turn from their wicked ways, then will I hear from heaven and will forgive their sin and will heal their land. 2 Chronicles 7:14