With the pins removed the valve body can be pulled out.

If you wish to further disassemble it you can unscrew the section shown.

This can be done by taking a long flat piece of metal and use it like a flat head screw driver. The best way to hold the other half is with a vice. Try to avoid using anything that will leave a mark or bend the metal.

Once the cap piece has been removed the following piece can be found inside.