This tech page contains helpful documents:
https://www.holley.com/support/resources/#Plumbing
especially "Plumbing Systems - Plumbing Basics".
Hose & Hose End Quick Reference Guide:
http://documents.holley.com/earls_guide.pdf
https://www.holley.com/support/resources/#Plumbing
especially "Plumbing Systems - Plumbing Basics".
Hose & Hose End Quick Reference Guide:
http://documents.holley.com/earls_guide.pdf