ITEM NAME:Drain Sewer Waste Valve Assembly with Connector Adapter for RV Trailer 50mm Description: - Replacement valve for your RV's gray-water tank. - This is made of a durable, hard plastic construction. This waste valve will replace a broken or warn out one on your RV's black water tank. - It is used to stop or allow the flow from the tank. You notice when you open it, it has a 50mm diameter passage which will allow waste to travel freely when it's open. - When you do close it, there are seals in there, which will tightly seal off the black water pipes when it's closed. - The waste valve body, which is this whole section right here, with the handle on it,It is used to open or close the tube opening on the waste valve. Specification: - Material: Plastic - Waste Valve Size: Approx 170x100x70mm/7x4x2.8 Inch - Connector Adapter Size: Approx.110x110x30mm/4.3x4.3x1.2 Inch Package Included: 1 Piece RV Dump Valve 1 Piece Drain Valve Connector.1 Piece RV Dump Valve. - It is used to stop or allow the flow from the tank. - This is made of a durable, hard plastic construction. This waste valve will replace a broken or warn out one on your RV's black water tank.