Brass Reducer Fitting 1 1/4" x 3/4" Threaded
Main Diameter
: 1 1/4"
Branch Diameter
: 3/4"
Thread Pattern
: Male × Female
Body
: Concentric (Flat Reducer)
About this item:
- Durable brass material – resistant and robust
- Threaded fitting 1 1/4" AG x 3/4" IG – flexible transition
- Perfect for heating and plumbing – professional quality
- Corrosion-resistant – ideal for long-term use
- Easy installation – for DIYers and professionals
Guaranteed Secure Checkout
| Item number | BONI-34684 |
| Brand | KLASEBO |
4.84
No images or videos found in reviews
Christine Liede
Good quality, fits exactly as described. Ideal for heating and plumbing installations.
Ulf Irmler
Fits great! The threads are high quality, easy to turn by hand, and hold securely. No slipping. Exactly what I was looking for.
Ulrich Elbers
Ich nutze es, um Schläuche für alles Mögliche anzuschließen - von Wasserhähnen bis zu Boilern und Toiletten. Die Qualität ist gut, bisher keine Probleme.
Sascha Holst
Passt genau wie beschrieben. Gute Verarbeitung und sitzt perfekt auf die entsprechende Größe.
Erhard Timm
Passt perfekt da, wo ich es brauchte.
Ronny Schaffarc
BONI-34474
Main Diameter
:
1 1/4"
Branch Diameter
:
1"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
Good product, I would recommend it.
BONI-34474
Main Diameter
:
1 1/4"
Branch Diameter
:
1"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
Olaf Bröcker
BONI-34453
Main Diameter
:
1"
Branch Diameter
:
3/4"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
Works perfectly for my needs. Everything is fine and already in use.
BONI-34453
Main Diameter
:
1"
Branch Diameter
:
3/4"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
Zhiguo Chen
BONI-34871
Main Diameter
:
1 1/2"
Branch Diameter
:
1"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass fitting works well for connecting different pipe sizes in my plumbing system. The threads fit securely and it handles both hot and cold water without issues. Good for basic installations.
BONI-34871
Main Diameter
:
1 1/2"
Branch Diameter
:
1"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Gerhard Traut
BONI-34870
Main Diameter
:
1 1/4"
Branch Diameter
:
3/4"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass reducer does exactly what it's supposed to do—connects different pipe sizes securely. The threads fit well without any leaks in my plumbing setup. Works as expected for basic water line adjustments.
BONI-34870
Main Diameter
:
1 1/4"
Branch Diameter
:
3/4"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Lena Franke
BONI-34447
Main Diameter
:
1"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
This brass reducer fitting works well for connecting different pipe sizes in my plumbing setup. The threads fit securely, and I haven't noticed any leaks so far. It seems sturdy enough for regular water pressure applications.
BONI-34447
Main Diameter
:
1"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
Klaus Stüwe
BONI-34452
Main Diameter
:
3/4"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
This brass reducer fitting works great for connecting different pipe sizes securely. It handled both hot and cold water without any issues, and I haven’t experienced any leaks so far. The corrosion-resistant material seems reliable for long-term use.
BONI-34452
Main Diameter
:
3/4"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
Nadine Petersen
BONI-34423
Main Diameter
:
1"
Branch Diameter
:
3/4"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass reducing nipple works well for connecting different pipe sizes in my plumbing project. The threads fit securely, and it feels solid when installed. I appreciate that it’s suitable for drinking water systems, which gives me peace of mind. It hand...
BONI-34423
Main Diameter
:
1"
Branch Diameter
:
3/4"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Andreas Mattes
BONI-34424
Main Diameter
:
1 1/4"
Branch Diameter
:
1"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass nipple worked well for my plumbing project. The threads fit securely and it felt sturdy when tightening. No leaks so far, which is what I needed.
BONI-34424
Main Diameter
:
1 1/4"
Branch Diameter
:
1"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Alfred Toporows
BONI-42377
Main Diameter
:
1 1/4"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
This brass reducer does exactly what it's supposed to do. The threads fit perfectly with standard plumbing connections, and the brass construction feels solid. I used it to connect different pipe sizes in my heating system, and it's holding up well under p...
BONI-42377
Main Diameter
:
1 1/4"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
Pam Schaab
BONI-42374
Main Diameter
:
1/2"
Branch Diameter
:
3/8"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
Here’s the translated review:
At first glance, it meets my expectations. I’ll install it soon and check the quality; looks very good!!!
BONI-42374
Main Diameter
:
1/2"
Branch Diameter
:
3/8"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
Roberto Metz
BONI-42382
Main Diameter
:
1"
Branch Diameter
:
3/8"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass reducing nipple works well for connecting different pipe sizes in my plumbing setup. The fit is secure and I haven't noticed any leaks. It's reassuring to know it's safe for drinking water systems.
BONI-42382
Main Diameter
:
1"
Branch Diameter
:
3/8"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Andreas Gelius
BONI-34472
Main Diameter
:
3/4"
Branch Diameter
:
1/2"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
This brass reducer does exactly what it's supposed to do. The threads fit perfectly with standard plumbing connections, and I appreciate that it's approved for drinking water systems. Works well for basic plumbing adjustments.
BONI-34472
Main Diameter
:
3/4"
Branch Diameter
:
1/2"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
Wolfgang Isense
BONI-42369
Main Diameter
:
1/2"
Branch Diameter
:
3/8"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
Works perfectly, exactly what I needed.
BONI-42369
Main Diameter
:
1/2"
Branch Diameter
:
3/8"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
Claudia Mößner
BONI-34877
Main Diameter
:
1"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass reducing nipple is a solid choice for plumbing projects. It connects different thread sizes seamlessly, and the brass construction feels reliable. I appreciate its versatility for various systems like heating and water lines. It handled the pres...
BONI-34877
Main Diameter
:
1"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Heike Necke
BONI-34473
Main Diameter
:
1"
Branch Diameter
:
3/4"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
Everything is perfect, the coupling matches what I needed, and the quality seems great.
BONI-34473
Main Diameter
:
1"
Branch Diameter
:
3/4"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
Alfred Keding
BONI-42370
Main Diameter
:
3/4"
Branch Diameter
:
3/8"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
This brass coupling does exactly what it's supposed to do - connects different pipe sizes securely. I appreciate that it's certified safe for drinking water systems. The threads fit well and it feels solid in hand.
BONI-42370
Main Diameter
:
3/4"
Branch Diameter
:
3/8"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
Rosemarie Schla
BONI-42378
Main Diameter
:
1 1/2"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
This brass reducer fitting works well for connecting different pipe sizes in my plumbing setup. The threads fit securely, and it seems sturdy enough for standard water pressure. I used it for a hot water line, and it hasn't leaked so far. Just remember to ...
BONI-42378
Main Diameter
:
1 1/2"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
Frank Baumgartl
BONI-42388
Main Diameter
:
1/2"
Branch Diameter
:
3/8"
Thread Pattern
:
Female × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass fitting is a solid choice for plumbing projects. It works well for both hot and cold water lines, and the corrosion-resistant material ensures durability. The installation was straightforward, and it feels sturdy once connected. It’s great knowi...
BONI-42388
Main Diameter
:
1/2"
Branch Diameter
:
3/8"
Thread Pattern
:
Female × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Jeronimo Imke
BONI-34422
Main Diameter
:
3/4"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass fitting does exactly what it's supposed to do - connects different pipe sizes securely without leaks. The brass construction feels solid and gives me confidence in my plumbing setup, especially knowing it's safe for drinking water systems. The t...
BONI-34422
Main Diameter
:
3/4"
Branch Diameter
:
1/2"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Hubert Veit
BONI-42387
Main Diameter
:
2"
Branch Diameter
:
1 1/4"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass fitting does exactly what it's supposed to. The threads fit perfectly when connecting different pipe sizes in my plumbing project. I appreciate that it's approved for drinking water systems - gives me peace of mind about water safety. The solid ...
BONI-42387
Main Diameter
:
2"
Branch Diameter
:
1 1/4"
Thread Pattern
:
Male × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Sebastian Ellbr
BONI-34685
Main Diameter
:
1 1/2"
Branch Diameter
:
3/4"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
A great fitting! It would be even better with cross grooves, but it works perfectly for installing reverse osmosis and a small faucet. Exactly what I needed.
BONI-34685
Main Diameter
:
1 1/2"
Branch Diameter
:
3/4"
Thread Pattern
:
Male × Female
Body
:
Concentric (Flat Reducer)
Jürgen Schäffne
BONI-34446
Main Diameter
:
2"
Branch Diameter
:
1 1/2"
Thread Pattern
:
Female × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass fitting works well for connecting different pipe sizes in my plumbing setup. The threads fit securely without leaks, and the brass construction feels solid. It handled both hot and cold water lines without issues.
BONI-34446
Main Diameter
:
2"
Branch Diameter
:
1 1/2"
Thread Pattern
:
Female × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Franz Hauser
BONI-34442
Main Diameter
:
3/4"
Branch Diameter
:
1/2"
Thread Pattern
:
Female × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass fitting feels solid and well-made. It threaded smoothly into my plumbing setup without any leaks. Handles hot water connections just fine so far.
BONI-34442
Main Diameter
:
3/4"
Branch Diameter
:
1/2"
Thread Pattern
:
Female × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Annett Jonas
BONI-42389
Main Diameter
:
3/4"
Branch Diameter
:
3/8"
Thread Pattern
:
Female × Male
Body
:
Sleeve (Doppelnippel / Muffe)
This brass adapter does exactly what it's supposed to do - connects different pipe sizes securely. I've used it in my home plumbing system and haven't had any leaks. The threads fit well and it seems solidly made.
BONI-42389
Main Diameter
:
3/4"
Branch Diameter
:
3/8"
Thread Pattern
:
Female × Male
Body
:
Sleeve (Doppelnippel / Muffe)
Irmfried Becker
BONI-42371
Main Diameter
:
1 1/2"
Branch Diameter
:
1"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
This brass reducing coupling works well for connecting pipes of different sizes in my plumbing setup. The female threaded design ensures a secure fit, and the brass construction feels sturdy. It’s great knowing it’s safe for drinking water and handles pres...
BONI-42371
Main Diameter
:
1 1/2"
Branch Diameter
:
1"
Thread Pattern
:
Female × Female
Body
:
Sleeve (Doppelnippel / Muffe)
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4.8
228 reviews
Reviews (228)
Christine Liede
Good quality, fits exactly as described. Ideal for heating and plumbing installations.
Reliable Brass Reducer Fitting for Versatile Installations
Looking for a dependable solution for connecting different pipe sizes? This high-quality brass reducer fitting is perfect for heating, plumbing, and air conditioning systems. It ensures a seamless transition between various thread sizes, providing a durable and leak-proof connection. Whether you're a professional installer, a dedicated DIY enthusiast, or just starting out, this reducer fitting is the ideal choice for your projects.
Product Features and Benefits
This brass reducer fitting offers a multitude of benefits for your installations:
- High-Quality Brass: Made from CW617N brass conforming to standards, ensuring a long service life and resistance to corrosion. You can rely on a safe and dependable connection.
- Versatile Applications: Suitable for plumbing, heating, air conditioning, and solar technology. You can use the reducer fitting flexibly in different areas.
- For Various Media: Usable for cold and hot water, as well as liquid and gaseous media (not suitable for salt water and water containing chlorine). This provides you with a broad range of applications.
- Suitable for Vacuum Applications: Also suitable for use in vacuum environments. You benefit from additional flexibility in your projects.
- Pressure Resistance: Suitable for pressure ranges up to 16 bar. You get a secure connection, even under high-pressure loads.
- Durability: Rust-free and corrosion-resistant, ensuring a long service life. You save costs in the long term, thanks to low wear.
Advantages
- High Corrosion Resistance: Brass is naturally corrosion-resistant, guaranteeing a long lifespan for the reducer fitting.
- Safe for Use with Drinking Water: The brass used complies with drinking water regulations, so you can use it safely in potable water installations.
- High Pressure Resistance: The reducer fitting withstands high pressure loads, providing a secure connection.
- Easy Installation: The precisely manufactured threads ensure easy and quick installation.
- Versatile Applications: Suitable for various applications in plumbing, heating, and air conditioning systems.
- Long Service Life: Thanks to the high quality of the material and careful workmanship, a long service life of the reducer fitting is guaranteed.
- Low Maintenance: Brass reducer fittings are low-maintenance, offering a cost-effective solution.
How to Use
- Step 1: Preparation: Thoroughly clean the threads of the pipes to be connected. Make sure there is no damage.
- Step 2: Sealing: Use a suitable sealant, such as PTFE tape or hemp, to seal the threads. Wrap the sealant around the male thread in the winding direction.
- Step 3: Installation: Screw the brass reducer fitting onto the prepared threads. Be careful not to overtighten the threads.
- Step 4: Verification: Check the connection for leaks. If necessary, tighten the connection slightly.
Technical Specifications
| Material: | CW617N Brass |
| Thread: | 1 1/4" AG x 3/4" IG |
| Pressure Range: | Up to 16 bar |
| Area of Application: | Plumbing, Heating, Air Conditioning, Solar |
EU-Responsible Name: Boni-Shop GmbH; Hr. Stanislav Maer
EU-Responsible Street: Wissmannstraße
EU-Responsible House No: 58
EU-Responsible Post Code: 27755
EU-Responsible Town: Delmenhorst
EU-Responsible Country: Germany
EU-Responsible Email: [email protected]
EU-Responsible Phone Number: +49(0)4221 45 777 00
GPSR attachment:
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