OS&Y stands for Outside Screw & Yoke, which means what about valve operation?

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Pass the California Alarm Company Operator Exam. Study with flashcards and multiple choice questions, each with hints and explanations. Prepare for your exam with confidence!

Multiple Choice

OS&Y stands for Outside Screw & Yoke, which means what about valve operation?

Explanation:
OS&Y means Outside Screw and Yoke. This design places the valve stem and yoke outside the valve body, and the stem typically rises as the valve is opened. That rising stem provides a clear visual indication of the valve’s position, so you can easily tell at a glance whether the valve is open or closed—an important feature for reliable operation and verification in alarm and safety systems.

OS&Y means Outside Screw and Yoke. This design places the valve stem and yoke outside the valve body, and the stem typically rises as the valve is opened. That rising stem provides a clear visual indication of the valve’s position, so you can easily tell at a glance whether the valve is open or closed—an important feature for reliable operation and verification in alarm and safety systems.

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