https://www.merriam-webster.com/dictionary/univalve
UNIVALVE Definition & Meaning - Merriam-Webster
The meaning of UNIVALVE is a mollusk with a shell consisting of one valve; especially : gastropod.
univalvedefinitionmeaningmerriamwebster
https://www.univalvemarine.com/
Pressure Reducing Stainless Steel Valve - UNIVALVE
Stainless steel valves are known for their exceptional durability, corrosion resistance, and longevity, making them ideal for use in marine environments.
stainless steel valvepressure reducingunivalve