Definition

1. Noun:
   • A type of valve that controls fluid flow: A "ball valve" is a mechanical device that starts, stops, or regulates the flow of a liquid or gas. Its operation is based on a spherical ball (the "ball") with a hole through its center. When the hole is aligned with the pipe, fluid flows. When the ball is rotated 90 degrees, the solid side blocks the flow.

Usage

• Primary Function: Used to describe a common, reliable valve type for on/off control in plumbing, industrial, and manufacturing systems.
• Key Characteristic: The defining feature is the use of a rotating ball as the sealing mechanism.

Examples

• Noun:
  • The plumber recommended installing a brass ball valve for the main water line.
  • To stop the flow, simply turn the handle of the ball valve a quarter turn.

Advanced Usage

• "Full-port ball valve": A specific type where the hole through the ball is the same size as the pipe diameter, minimizing flow restriction.
  • For maximum flow, specify a full-port ball valve in the design.
• "Seating of the ball": Refers to the contact surface where the ball seals against the valve body to stop flow.
  • The leak was caused by damage to the seating of the ball.

Variants and Related Words

• Valve (n): The general category of devices for controlling flow.
• Globe valve (n): A different valve type that uses a plug and seat, often for throttling flow.
• Gate valve (n): A valve that uses a gate or wedge to stop flow, typically operated by a rising stem.

Synonyms

• Rotary valve: A broader term for valves that operate by rotating a closure member.
• Quarter-turn valve: Describes the operating motion (a 90-degree turn) common to ball valves and some others.

Related Phrases

• To actuate a ball valve: To operate or turn the valve.
  • The system is automated, using a motor to actuate the ball valve.

Noun

1. any valve that checks flow by the seating of a ball