My in-line water shut-off 3/4" gate valve («КАЗ») in Istanbul

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The image shows a standard manual shut-off valve.
This type of valve is commonly used to control the flow of water in plumbing or heating systems.
The red turn handle indicates that the valve is designed for fully opening or closing the flow.
The "3/4" marking refers to the thread size, which is three-quarters of an inch, a standard size for many residential systems.

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The abbreviation on the valve seems be to «КАЗ» (using Russian letters), which likely stands for «Казанский Арматурный Завод», which refers to the Kazan Armature Plant.

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Valve Description:

  • Type: Manual shut-off gate valve
  • Thread Diameter: 3/4 inch
  • Location: Stairwell outside my apartment in Istanbul
  • Purpose: To shut off the water supply to my apartment
  • Manufacturer: Kazan Armature Plant
  • Marking on the valve: "КАЗ", which stands for Kazan Armature Plant, a well-known manufacturer of valves and fittings in Russia.
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What are the differences between 3/4" gate and ball water valves?