Valves

An OS&Y valve is a type of gate valve used in sprinkler and standpipe systems as a control valve. Read this guide to when and why they are used.

Learn when to use indicating valves on fire protection systems and how NFPA standards governing these devices have changed.

Learn the difference between backflow preventers vs. check valves, and why backflow preventers offer the best protection against water contamination.

Backflow preventers stop harmful contaminants from polluting municipal drinking water. Learn more about backflow and when backflow preventers are required.