Gate valves (also known as knife valves or slide valves) are linear motion valves in which a flat closure element slides into the flow stream to provide shut-off. They are one of the most common ...

often called an angle stop valve. I've been slowly upgrading the plumbing in my older home. As part of that, I'm replacing the old gate valves at each fixture with quarter-turn valves, otherwise known ...

Parallel gate valves are slide valves with a parallel-faced gate-like closure member. This closure member may consist of a single disc or twin discs with a spreading mechanism in between. Typical ...