STRAIGHT-FIT valves from Mainline Backflow Products come in 3-, 4- and 6-inch sizes and are available in both PVC and ABS. They have a body that is extendible to whatever depth required. The gate can be extended for easy extraction as well. They have a Smart CURVE gate designed to allow a sewer snake to feed and retract without catching on the gate itself. A cleat insert in the body eases the feeding and retrieval of a snake without hanging up, reducing excessive wear on the body. An optional test gate can be used to pressure test the system or isolate the property. 877/734-8691; www.backwatervalve.com.