Gray water is the wastewater that comes from the kitchen and lavatory sinks. This type of water holds the remnants of dishwashing and other washing activities. Gray water tanks are not always standard in RVs but are a great addition because they reduce the fill rate of your black water tank. They're also a requirement for food trucks and trailers that serve the public* to have a gray water tank for every freshwater tank in a vehicle. The gray water tank must also be larger than the freshwater supply tank to account for all waste gain to the water during usage.
Water has a significant role in the world of RVs and food trucks. It is one of the components of survival and access to the conveniences of home while you're out on the road. Part of that crucial system is the gray water tank. You can't just drain your water on the side of the road, and you need somewhere to store it while you're traveling. Make sure and outfit your rig, or food truck, with some of the best in the industry when you buy from RecPro.
*Always check local and state regulatory agencies for laws governing food trucks, storage tanks, and all standards and practices applicable*