The Lasco 429-010 Schedule 40 PVC coupling is designed for compatible plumbing applications using 1 inch slip connections on both sides. A coupling like this is useful because it joins two sections of PVC pipe in a straight run, making it a common fitting for repairs, extensions, and layout adjustments.This type of fitting is often used when a damaged section has been cut out or when additional pipe length needs to be added to the line. Using the correct Lasco coupling can help create a cleaner connection and improve assembly consistency.This Schedule 40 PVC coupling is a practical fitting for pool, spa, irrigation, and general plumbing systems that need dependable straight-line 1 inch pipe joining. Lasco Schedule 40 PVC coupling 1 inch slip x 1 inch slip connection Helps join two sections of PVC pipe in a straight run Useful for repairs, extensions, and new plumbing work Supports cleaner and more dependable pipe alignment