Step-by-Step Instructions and Pictures for Types of Plumbing Valves

By the experts at The Family Handyman
Comparing stop, gate and ball valves for use as water-supply shutoff valves. Read an overview of types of plumbing valves.
From The Family Handyman
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Ball Valves
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Ball valves contain a finely machined stainless steel ball with a hole drilled through the center that pivots in plastic bushings. Like the gate valve, it’s a full-flow valve. The hard steel allows this valve to be partially open without wearing out. In the closed position, the lever is perpendicular to the pipes; in the open position it's parallel, so a glance will tell you if it's open or not. The downside? If the pipes are tight against the wall, you may not be able to operate the lever.
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