Essentially a sump pump encased in a concrete volute to reduce noise and vibration. These are desirable for high volume, continuous use applications.
A sump is a pit that gathers liquids. In wet sumps, oil is stored in the oil pan while in dry sumps, oil is stored outside the engine in a tank.
A dry sump is not submerged under water as a wet sump is. a dry sump uses a resivoir to hold the oil much like the brake fluid. a wet sump has the oil sump bolted to the bottom of the engine block :D
space, cost, practicality
Whenever you have an area which is below surface ground level and is capable of retaining water. For example: A basement or crawl space beneath a home or building, a pitched driveway delivery dock and even a low spot in the yard can utilize a sump pump. Sump pumps to need to be replaced over time, but the frequency is not easily gauged. Some models up sump pumps are made from materials which prefer to be kept "wet" (most common) while others don't do well while being constantly submerged.
Only wet sump engines have drain holes. Two strokes and four strokes with oil tanks do not, they are dry sump engines.
Wet sump with 1.6-quart capacity.
"The first thing, if you don't already have a sump pump, is to get at least one or two pumps that can sit on the surface of your basement and pump water out. Also, remove everything from the basement that hasn't been wet so it does not mold. When all the water is out, start cleaning!"
Unfortunately, we are learning the hard way after Hurricane Irene that insurance does not cover for damages caused by sump pump failure due to a power outage. NOT happy about it, but we continue to work with the wet vac and fans, de-humidifiers. After some research, I have found that some insurance companies do offer a separate clause for this. Generators or battery back-ups for sump pumps seem to be the way to go. That will be our next investment after replacing what we will end up losing.
Call the person who deals with the tank to ask
it is when you get some wet and you get some dry and pit it all on! :-)
wet dog food
One advantage of a dry sump is that the stored oil is contained into a separate tank. Another advantage is that there is an increase engine reliability. The third advantage of a dry sump is that the excess air is removed from the crankcase leaving the oil pan dry. The fourth advantage is the horsepower has also increased because there is less viscous drag.