Different Types of Valves in Plumbing Plumbing materials Plumbing tools Plumbing drawing Plumbing drains Pvc pipe fittings Types Of Valves Used In Plumbing Systems: Gate Valve These are the most used valves in plumbing systems Ball Valve Ball valves use a metal ball with a hole bored through the center, sandwiched between two seats to control … [Read more...] about Plumbing Tools: Different Types of Valves in Plumbing