Field glossary

Head

Pressure expressed as the height of a water column; 10 ft of head is about 4.3 psi at the bottom

Used across 3 Anvilfield field guides, most in Plumbing.

Also defined as

Landscaping: The vertical lift plus friction a pump must overcome, in feet; flow drops as head rises
Pressure expressed as feet of water; about 2.31 ft equals 1 psi

Where this shows up