The Davant 40mm x 21.5mm Solvent Waste to Overflow Reducer is a handy, space-saving fitting that allows you to connect a smaller 21.5mm overflow pipe into a 40mm solvent weld waste system. It’s a smart solution when you need to direct overflow or condensate water—such as from a cold water tank, boiler, or appliance—into a larger household drainage pipe.
Designed to fit securely and neatly, this reducer is ideal for use in bathrooms, kitchens, utility rooms, or plant rooms. Available in both black and white, it can be matched to your existing pipework for a tidy, professional look in either indoor or sheltered outdoor installations.
This reducer is part of a solvent weld system, which means it’s designed to form a permanent and watertight bond when used with solvent cement. Once joined and cured, the connection will resist leaks and provide long-lasting reliability, even under regular use.
Whether you're a professional plumber or tackling your own home project, this reducer makes the job of adapting pipe sizes easier and more efficient.
Frequently Asked Questions
What is the main purpose of this reducer?
It’s used to connect a 21.5mm overflow pipe into a larger 40mm solvent weld waste fitting—perfect for combining smaller drain lines, like condensate or overflow pipes, into a main waste outlet.
Do I need solvent cement for this fitting?
Yes, solvent cement is required to create a strong, permanent seal. Apply it to both the inside of the fitting and the outside of the pipe before inserting them together and allowing it to set.
Can this be used outdoors?
Yes, it can be used in sheltered outdoor locations. For external use, the black version is recommended as it offers better resistance to UV exposure compared to white.
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