The Outside Screw and Yoke valve in a sprinkler system is used for what?

The Outside Screw and Yoke valve in a sprinkler system is used for what?

• A. It Is Used To Admit Water Into The Sprinkler System, Allowing Flow
• B. It Acts As A Pressure Relief Valve
• C. It Seals The System When Closed
• D. It Is A Type Of Shut-Off With No Flow Control

Answer: (A)

Outside Screw and Yoke valves serve as the main control valves for the sprinkler system. Their job is to admit water into the system so the piping can be pressurized and the sprinklers can operate. When opened, water flows into the system; when closed, the flow is stopped and the system is isolated. The outside screw and yoke design allows you to see the valve’s position from outside—the stem and yoke indicate open or closed status. This valve is a positive shut-off and does not function as a pressure-relief device or as a flow regulator. So the primary purpose is to admit water into the sprinkler system, allowing flow.

Outside Screw and Yoke valves serve as the main control valves for the sprinkler system. Their job is to admit water into the system so the piping can be pressurized and the sprinklers can operate. When opened, water flows into the system; when closed, the flow is stopped and the system is isolated. The outside screw and yoke design allows you to see the valve’s position from outside—the stem and yoke indicate open or closed status. This valve is a positive shut-off and does not function as a pressure-relief device or as a flow regulator. So the primary purpose is to admit water into the sprinkler system, allowing flow.