New type ZPG Gas Valves question

[poolebybirth]

These new A RATED condensing boilers usually use Zero Pressure Governor gas valves now, so how do you tell the difference when looking at one, if it's a ZPG or a standard type? I ask as I am interested and wondered if there was an easy way to identify?
My boiler ha sthe traditional Multfunctional Gas Valve, with the perm pilot button!

 

[StevenJames]

These look similar by the ZPG type boilers usually have a radial burner. Have solenoid(s) as normal gas valves do though.

 

[ChrisR]

They work by the fan sucking gas through the gas valve. Completely different from yours. The GV's don't necessarily look much different on the outside.