Wavin Osma Overflow Reducer - White - 32x21.5mm
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Product Information
Full details
This Wavin Osma Overflow Reducer is designed for plumbers and DIY enthusiasts needing to connect a 21.5mm overflow pipe to a 32mm solvent weld waste system. Its key benefit is providing a secure, permanent joint for safely removing overflow water from condensing boilers and cisterns. A potential caveat is its specific solvent weld application, requiring appropriate primers and cements for installation.
All features
| Model Part Number | 695666 |
|---|---|
| Brand | Wavin |
Extended Product Information
FAQs
What materials is this overflow reducer made from?
The fittings are manufactured from ABS and the pipe component is made from PVC-U.
What size pipe does this reducer connect to?
It connects a 21.5mm pipe into a 32mm solvent weld waste socket.
What is solvent welding?
Solvent welding is a process that uses a solvent cement to fuse two plastic pieces together, creating a permanent and strong bond. It involves applying a primer to clean and soften the surfaces, followed by a cement that chemically welds the materials.
Can I use this with push-fit fittings?
No, this product is specifically designed for solvent weld systems and is not compatible with push-fit or compression fittings.
What is the purpose of this overflow reducer?
It is used to safely channel overflow water from appliances like condensing boilers or from cisterns and tanks into a larger waste pipe system.
Is this product suitable for hot water systems?
This product is designed for overflow water and is not intended for high-pressure or high-temperature applications. Always consult product specifications for temperature and pressure ratings if using in non-standard applications.
Where can I find BS EN 1455-1 and BS EN 1566-1 standards?
These are British and European standards for plumbing fittings. You can typically access them through official standards organizations or relevant industry bodies.
Troubleshooting
Joint is leaking after installation.
Ensure proper surface preparation (clean, dry, de-greased) and adequate application of primer and cement. Check that the pipe was fully inserted and held in place during the setting period. Solvent weld joints are permanent; if a leak occurs, the section may need to be cut out and replaced.
Pipe does not fit into the reducer socket.
Verify that you are using the correct size pipe (21.5mm) and socket (32mm). Ensure the pipe end is not damaged or deformed. Slight chamfering of the pipe end can aid insertion.
Difficulty achieving a secure joint.
Ensure you are using the correct type and brand of solvent weld primer and cement recommended for ABS and PVC-U. Follow the application instructions precisely, including the hold time for setting.
Pros and Cons
Pros
- Provides a reliable and permanent connection for overflow water.
- Manufactured to recognized industry standards.
- Specifically designed for use with Wavin Osma condensate fittings.
- Durable ABS and PVC-U construction.
Cons
- Requires solvent weld primer and cement for installation.
- Limited to specific pipe sizes (21.5mm to 32mm).
- Not suitable for applications requiring push-fit or compression fittings.
Setup, Compatibility & Care
Setup:
- Ensure both the 32mm waste socket and the 21.5mm pipe are clean, dry, and free from grease.
- Apply Wavin Osma solvent weld primer to the outside of the 21.5mm pipe end and the inside of the reducer's 21.5mm socket.
- Apply Wavin Osma solvent weld cement to the same surfaces.
- Immediately insert the pipe into the socket with a slight twisting motion until it bottoms out.
- Hold the joint firmly for 30 seconds to prevent movement while the cement sets.
- Allow adequate curing time before exposing the joint to water or pressure, following the cement manufacturer's instructions.
Compatibility:
- Compatible with 21.5mm pipes.
- Designed to fit into 32mm solvent weld waste sockets conforming to BS EN 1455-1 and BS EN 1566-1.
- Specifically compatible with Wavin Osma condensate fittings.
Care:
This product is designed for permanent installation and requires no specific ongoing care beyond ensuring the connected systems are functioning correctly. Regular checks of the associated overflow system for blockages are recommended.