TDB Compression Female Straight Coupling 312
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About this product
Description
The TDB Compression Female Straight Coupling 312 is a brass compression coupling for joining two sections of copper pipe with a matching female thread at both ends, sized to fit standard Irish imperial pipework. Manufactured from CW617N brass and certified to I.S. EN1254-2, it forms a watertight seal without soldering or an open flame, making it a straightforward repair or extension fitting for domestic plumbing.
Key features
- Full brass compression fitting for imperial copper pipe
- NSAI-certified to I.S. EN1254-2 for plumbing and heating use
- Compression joint needs no soldering, flux or open flame
- Female thread at both ends for straight in-line connections
- Suitable for hot and cold indoor water systems
- Choose your size from the options above
| Fitting reference | 312 – Female Straight Coupling |
| Material | CW617N brass |
| Connection method | Compression, no solder required |
| Standard | I.S. EN1254-2, NSAI certified |
| Recommended use | Indoor plumbing and heating pipework |
Irish plumbing installations often mix imperial and metric pipe runs, especially in older housing stock across Wicklow and the wider county, and a correctly sized imperial coupling avoids the need for an adaptor at every joint. Assembly is straightforward: slide the nut and olive onto the pipe, insert the pipe fully into the fitting body, and tighten the nut by hand before finishing with a spanner.
This brass compression coupling is suitable for joining two sections of copper pipe of the same size, repairing a damaged run, or extending an existing pipe without cutting into a wall. If you are replacing pipework during a bathroom or kitchen job, the compression joint gives a secure connection without a blowtorch or solder. Choose your size from the options above to match the pipe on the job.
Please refer to the product packaging for complete technical specifications before fitting. Brass compression fittings are not suitable for underground or buried use. For advice on the right coupling for your pipework, call Total DIY on 01 201 8798.
Additional information
| Weight | N/A |
|---|---|
| Option | ½", ¾", 1", 1" x ¾" |
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FAQs
Of course! Choosing the right paint depends on the surface, location, and finish you’re after. For interior walls, we recommend quality emulsions from Crown or Johnstone’s. For exterior masonry, Sandtex and Dulux Weathershield offer excellent protection against Irish weather. Wood projects benefit from Sadolin or Ronseal for long-lasting results. If you’re unsure, call us on 01 201 8798 or visit our Kilcoole store where our team can advise on the best products for your specific project.
Yes! Through our Total Nature range, we offer high-quality grain-free dog food and cat food, natural pet treats, and a selection of wild bird seed blends. We believe pets deserve quality nutrition, which is why we’ve carefully selected our pet food range. You can shop online or visit our Kilcoole store to browse the full selection. We’re happy to help you find the right food for your pet’s needs.
Total DIY is a family-owned hardware store in Wicklow offering a wide range of products for home improvement, trade, and garden projects. Our main categories include interior and exterior paints from trusted brands like Crown, Sadolin, Sandtex, and Blackfriar, as well as plumbing supplies, electrical fittings, hand tools, power tools, building materials, and home & garden essentials. We’re also proud to be local pet food experts, stocking quality grain-free pet food and wild bird seed. Whether you’re a DIY beginner or a seasoned tradesperson, you’ll find everything you need in-store or online.
We offer delivery across Ireland with rates depending on your location and order size. Standard delivery to most areas is available, with larger or heavier items quoted individually. Delivery times are typically 2-5 working days, though during busy periods this may be slightly longer. For full details and current delivery times, please visit our Delivery Information page or contact us directly on 01 201 8798.
Yes, our Click & Collect service is completely FREE. Simply place your order online, select Click & Collect at checkout, and we’ll prepare your items at our store in Kilcoole, Co. Wicklow. You’ll receive an email when your order is ready, and you can collect during our opening hours. It’s a convenient way to shop online and pick up locally without any delivery wait.
We accept returns within 15 days of delivery, provided items are unopened and in their original packaging. If you’ve changed your mind or ordered the wrong item, simply contact us to arrange your return. For full terms and conditions, please see our Returns Policy page. If you have any questions, our team is happy to help.
We’re sorry if something has arrived damaged or incorrect. Please contact us within 48 hours of receiving your order, and include photos of the damage or the incorrect item. We’ll arrange a replacement or refund as quickly as possible. You can reach us by phone on 01 201 8798 or through our Contact Page. We’re committed to making things right.
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