Waterway 8" Round Vinyl Liner Main Drain Mounting Plate [Grey] (642-2097) poolparts Gate valves are useful because

Gate valves are useful because they help isolate plumbing lines for service or controlled operation

Waterway 5 inch Power Storm jet

Matching those specific details helps make the replacement more accurate and reduces the risk of fitment problems during service

Unions are useful because they allow plumbing lines or connected components to be separated more easily for service or replacement

Generic Buna-N O-ring using the O-101 reference

Waterway 8" Round Vinyl Liner Main Drain Mounting Plate [Grey] (642-2097) poolparts Gate valves are useful becauseThe Waterway 642 2097 vinyl liner main drain mounting plate is designed for compatible 8 inch round drain applications and features a gray finish. In vinyl liner systems, the mounting plate is a key component because it helps secure the drain assembly correctly while contributing to the visible finish around the drain area. The gray tone makes this plate especially appealing where a neutral finish blends more naturally with the surrounding pool