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RV Sewer Hose Fittings - Reducer Couplers

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RV Sewer Hose Fittings with Reducer Couplers

Built to handle size changes in your RV plumbing, reducer couplers let you step between common 3" and 1-1/2" lines for gray or black water hookups. Installation typically uses ABS solvent cement for a solid seal; if you're replacing a cemented fitting, removal usually means cutting the pipe after loosening any clamps.
Yes, reducer couplers are available to go from 3" to 1-1/2". Confirm whether you need an inline coupler or a tank reducer that fits a 3" opening and steps down to 1-1/2". Check if your connection is hub or spigot and verify the pipe OD. This setup is commonly used at a 3" Y to tie in a 1-1/2" line.