Standartpark oil/water/sand separators are a great addition to plumbing needs. Mostly used in car washes - gas stations - auto repair facility where water and oil and even dirt and sand are mixed together and need to be removed for biological reasonings in your out spout. Our oil / water / sand separators are made from 100% fiberglass shell making them super light for installation underground. They are provided with a brass interior piping for no corrosion. Water and sand / oil mixture will enter the system and separate within it. Allowing clean output of water and leaving sand / oil within the system to be pumped out and removed. Please contact us with any questions. These are currently in stock and ready to go when you are...