How do I fix a sprinkler valve that leaks instead of popping up

When this particular valve (Champion Classic 3/4" As Max PSI 150 466 Max Temp 110o) turns on, a lot of water starts coming out of the the bottom part of the valve which I've highlighted in the imag

Use the right fittings for installation of pop-up sprinklers

How Much Does Sprinkler Repair Cost? (2023) - Bob Vila

Why do sprinklers have that piece that disrupts the flow and makes them sound like a sprinkler? - Quora

Fixing A Sprinkler Valve Quick Fix, No Glue

Why is my sprinkler system backflow leaking after being winterized

9 Start-Up Tips To Safely Start Your Irrigation System

Why would a sprinkler Air Valve leak after winterization? - Home

Troubleshooting — SoCal Yard Transformation

How to Adjust, Repair Lawn Sprinkler Heads

This pipe of the ground in our side yard. Was leaking so I shut it