Easier to install and remove than threaded or weld-on valves, these valves bolt to flanges. They’re often used in lines requiring frequent cleaning and maintenance, such as those for slurries. They open and close gradually, preventing system damage from sudden starts and stops in flow. Also known as gate valves.

Valves with a wheel handle open and close with multiple turns, providing more controlled, shock-resistant flow than valves with a pull handle.

Valves with a nonrising stem keep the handle in the same position whether they’re open or closed. They're often used in low-clearance locations. Ductile iron valves are stronger and more durable than cast iron valves, handling greater pressure changes without cracking.

Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.