How do I take the valve cartridge out from my push and pull shower?

To remove the valve cartridge from your push and pull shower, first turn off the water supply to avoid any leaks. Use a screwdriver or an appropriate tool to remove the handle and any decorative trim. Once exposed, carefully unscrew or pull out the cartridge, following the manufacturer's instructions. If it's stuck, applying a bit of lubricant can help loosen it.