Abstract: A solenoid adapter for a solenoid valve that permits use of different solenoids with different solenoid bowls is provided. Specifically, a reverse flow solenoid adapter enables use of a reverse flow solenoid with a forward flow solenoid bowl, while a forward flow solenoid adapter enables use of a forward flow solenoid with a reverse flow solenoid bowl. The adapters include a lower section to mount into a valve solenoid bowl, an upper portion including an adapter solenoid chamber to receive a solenoid, and flow-reversing passages that duct a vent passage flow path from the valve solenoid bowl to the adapter solenoid chamber such that the flow path transitions from a flow configuration of the valve solenoid bowl to a flow configuration required for the solenoid to function and returns to the flow configuration of the valve solenoid bowl as the path circulates back to the valve solenoid bowl.