Plumbing Gate Valves

gate valves
A valve with a sliding part that controls the extent of the aperture
(Gate valve) A gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid.
(GATE VALVE) A two-way valve that may be opened or closed to block the flow of fluid in a passage. Normally manually operated, but may be automated, especially for larger sizes.
(Gate valve) A valve with a circular-shaped closing element that fits securely over an opening through which water flows. A valve that utilizes a disc moving at a right angle to the flow to regulate the rate of flow. When a gate valve is fully opened, there is no obstruction to the flow.

plumbing
Used as a humorous euphemism for the excretory tracts and urinary system
(plumber) a craftsman who installs and repairs pipes and fixtures and appliances
The system of pipes, tanks, fittings, and other apparatus required for the water supply, heating, and sanitation in a building
The work of installing and maintaining such a system
utility consisting of the pipes and fixtures for the distribution of water or gas in a building and for the disposal of sewage
bathymetry: measuring the depths of the oceans