Spears 457-015 - 1-1/2 PVC UNION SOCXSOC BUNA SCH40The Spears 457 015 1 1 2 PVC Union SOCXSOC BUNA SCH40 is a straight union pool plumbing replacement part that will help complete the flow of water to and from the pool. This PVC part is inert to most mineral acids, bases, salts and paraffinic hydrocarbon solutions, which means it will hold up to all pool sanitizing systems. Use the union style plumbing part to ensure that your system will work efficiently under any conditions. Type: Standard Schedule