ValveMode - Prototype Docs

ValveMode :: union

Defines the mode of operation for a ValvePrototype.

`"one-way"`	Fluid will flow if input level > output level.
`"overflow"`	Fluid will flow if input level > ValvePrototype::threshold and input level > output level.
`"top-up"`	Fluid will flow if output level < ValvePrototype::threshold and input level > output level.

Type used in