Stem O-ring tell-tale hole is located on which part of the SOPV?

• A. Side of valve body on SOPV
• B. Top of the pump
• C. Under the service tank
• D. Inside the control panel

Answer: (A)

The tell-tale hole is a visual indicator built into the valve body to show leakage past the stem O-ring. Its placement on the side of the valve body allows any fluid that escapes around the stem packing to vent directly to the outside where it can be seen during inspections. If the hole were up on top of the pump, under the service tank, or inside the control panel, a leak could go unnoticed, delaying maintenance. The side of the valve body provides quick, visible indication, making it the correct location.