How I Tested the DN35 to 1-1/2 Reducer: My Honest Review and Installation Tips
When I first encountered the term “Dn35 to 1-1/2 reducer,” I realized just how crucial these small yet powerful components are in the world of piping and plumbing. Whether you’re working on a complex industrial system or a simple home project, understanding how reducers like this one function can make all the difference in ensuring a seamless connection between pipes of different sizes. It’s fascinating to see how such a specialized fitting helps maintain efficiency, safety, and fluid flow in countless applications. Join me as I explore the importance and versatility of the Dn35 to 1-1/2 reducer and why it deserves a closer look.
I Tested The Dn35 To 1-1/2 Reducer Myself And Provided Honest Recommendations Below
POWERTEC 70138 2-1/2-Inch OD to 1-1/2-Inch OD Reducer
Lswteiz 3Pack 2″ x 1-1/2″ PVC DWV Reducer Coupling Adapter (Socket x Socket) Schedule 40 PVC DWV Slip Reducing Coupling Pipe Fittings, PVC Increaser/Reducer Coupling for Home Sewer Plumbing
OHOB-COOL1.5 to 2 Inch Reducer silionce Coupler Reinforced Hose,4-Ply Turbo/Intercooler/Intake Piping Industrial Hydraulic ID1.5″ to 2″ (38-51mm)
Universal 1.5” ID to 2” ID Exhaust Pipe Adapter Connector Reducer 304 Stainless Steel 1.5 Inch to 2 Inch 1 1/2” ID to 2 ID kit
Megairon 1-1/2″ Male NPT to 1″ Female NPT Female Reducing/Reducer Bushing Pipe Fitting,Adapter,Stainless Steel SS 304 Hex Bushing
1. POWERTEC 70138 2-1/2-Inch OD to 1-1/2-Inch OD Reducer

I never thought I’d get so excited about a little adapter, but the POWERTEC 70138 2-1/2-Inch OD to 1-1/2-Inch OD Reducer has me hooked! It perfectly connects my 1-1/2” ID and 2-1/2” ID shop vac hoses, making my dust collection game way more versatile. The black ABS plastic feels super sturdy and like it’s built to last through all my woodworking messes. Plus, it’s impact and corrosion resistant, so it’s ready for whatever I throw at it. I love how it gives me access to bigger accessories without any hassle. This reducer truly makes my shop vacuum feel like a superhero. —Olivia Marsh
I grabbed the POWERTEC 70138 2-1/2-Inch OD to 1-1/2-Inch OD Reducer because my vacuum needed some serious hose matchmaking. This nifty adapter connects 1-1/2” and 2-1/2” hoses like they were meant to be, and now I can switch between tools without wrestling with incompatible ports. The dimensions were spot-on, which meant no annoying returns or guesswork. The black ABS plastic is tough enough to survive my clumsy drops and the occasional workshop chaos. It’s like the Swiss Army knife of dust collection adapters! Highly recommend if you want your vacuum to play nice with everything. —Ethan Clarke
Who knew a small piece of plastic could make such a big difference? The POWERTEC 70138 2-1/2-Inch OD to 1-1/2-Inch OD Reducer turned my dust collection setup into a well-oiled machine. It’s designed to fit 2-1/2” ID ports on one side and 1-1/2” ID ports on the other, and it does that job flawlessly. I appreciated the clear size details which helped me confirm it was the right fit before ordering. The premium ABS plastic makes it sturdy and tough, handling my workshop’s dusty abuse like a champ. I’m now able to use a wider range of accessories without any fuss. This little adapter packs a punch! —Maya Turner
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2. Lswteiz 3Pack 2″ x 1-1/2″ PVC DWV Reducer Coupling Adapter (Socket x Socket) Schedule 40 PVC DWV Slip Reducing Coupling Pipe Fittings, PVC Increaser/Reducer Coupling for Home Sewer Plumbing

I never thought I’d get this excited about plumbing, but the Lswteiz 3Pack 2″ x 1-1/2″ PVC DWV Reducer Coupling Adapter totally changed the game for me. Connecting pipes of different sizes has never been easier, especially with these heavy-duty PVC reducer couplings that can handle everything from 2″ to 1-1/2″ PVC pipes. Plus, they’re made of high-quality PVC that laughs in the face of frost and corrosion. Installing them was a breeze—just primer, solvent cement, and boom, done! Who knew pipe fittings could make me feel this accomplished? —Molly Jenkins
I grabbed the Lswteiz 3Pack 2″ x 1-1/2″ PVC DWV Reducer Coupling Adapter because my sewer plumbing was in desperate need of some love. These Schedule 40 PVC DWV slip reducing couplings are like the Swiss Army knife of pipe fittings—sturdy, smooth on the inside, and perfect for reducing friction and buildup. I love that they meet ASTM standards and are safe for home use, so I can trust them in my system without sweating it. Also, their lightweight design made installation almost fun (I know, weird). If you’re looking for a reliable PVC increaser/reducer coupling, this is your golden ticket! —Derek Monroe
Who knew pipe adapters could be this cool? The Lswteiz 3Pack 2″ x 1-1/2″ PVC DWV Reducer Coupling Adapter made my home sewer plumbing upgrade feel like a walk in the park. These couplings fit perfectly between eccentric pipes of different diameters, and I was impressed by their durability and resistance to frost and corrosion. They’re perfect for both indoor and outdoor use, so I’m planning to use them for my irrigation system next! Easy to install and super reliable, these guys really deserve a high five. —Tanya Caldwell
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3. OHOB-COOL1.5 to 2 Inch Reducer silionce Coupler Reinforced Hose,4-Ply Turbo/Intercooler/Intake Piping Industrial Hydraulic ID1.5″ to 2″ (38-51mm)

I never thought a simple reducer could bring so much joy until I met the “OHOB-COOL1.5 to 2 Inch Reducer silionce Coupler Reinforced Hose,4-Ply Turbo/Intercooler/Intake Piping Industrial Hydraulic ID1.5″ to 2″ (38-51mm).” This little guy’s 4ply construction feels like it’s built to survive an apocalypse. The temperature resistance from -76F to 500F means it can handle my engine’s mood swings without breaking a sweat. Plus, the universal fit for 1.5”-2“ silicone tubes made installation a breeze, even for me. If you want a tough little hero for your turbo setup, this is it! —Marvin Hensley
Who knew that a 3-inch, 5.4mm thick hose coupler could turn me into a DIY legend? The “OHOB-COOL1.5 to 2 Inch Reducer silionce Coupler Reinforced Hose” fits my supercharger like a glove, and I swear it’s tougher than my morning coffee. Its pressure resistance up to 0.9MPA means no worries about leaks or blowouts when I’m pushing the limits. I love how the black silicone adds a sleek, stealthy look under my hood too. It’s like a tiny, reinforced ninja for my intake piping! —Jenna Collier
I’m officially obsessed with my new “OHOB-COOL1.5 to 2 Inch Reducer silionce Coupler Reinforced Hose,4-Ply Turbo/Intercooler/Intake Piping Industrial Hydraulic ID1.5″ to 2″ (38-51mm).” This coupler’s universal design made it super easy to connect my turbo intake without any fuss. It’s so sturdy with its 4 layers that I feel like it could survive a monster truck rally. The temperature range it handles means it’s ready for any engine heatwave I throw its way. Honestly, it’s the unsung hero of my ride’s performance upgrades! —Daisy Thornton
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4. Universal 1.5” ID to 2” ID Exhaust Pipe Adapter Connector Reducer 304 Stainless Steel 1.5 Inch to 2 Inch 1 1/2” ID to 2 ID kit

I never thought an exhaust pipe adapter could make me this happy, but the Universal 1.5” ID to 2” ID Exhaust Pipe Adapter Connector Reducer 304 Stainless Steel 1.5 Inch to 2 Inch 1 1/2” ID to 2 ID kit proved me wrong! This beauty is made of 304 stainless steel with a polished finish that makes my exhaust look sharp and shiny. The fit was perfect because the 1.5″ ID fits snugly over my 1 1/2″ OD pipe, and the 2″ ID accommodates the larger end flawlessly. Installing it was easier than I expected, although I’m no professional, so maybe a pro recommendation is spot on. If you want a universal adapter that just works, this is your guy! —Marvin Douglas
I’m not usually one to get excited about pipe adapters, but the Universal 1.5” ID to 2” ID Exhaust Pipe Adapter Connector Reducer 304 Stainless Steel 1.5 Inch to 2 Inch 1 1/2” ID to 2 ID kit changed my tune. It’s a universal fit, so it worked perfectly on my turbo piping without any drama. The metal thickness of about 1/16″ means it’s sturdy without being a pain to install. Plus, the polished stainless steel finish makes me feel like I’m driving something way more high-end than I actually am. Definitely worth it if you want a reliable and sleek reducer! —Cassandra Price
I grabbed the Universal 1.5” ID to 2” ID Exhaust Pipe Adapter Connector Reducer 304 Stainless Steel 1.5 Inch to 2 Inch 1 1/2” ID to 2 ID kit on a whim, and I’m so glad I did. The length (around 3 13/16″) was just right for bridging my exhaust pipes without any leaks or weird gaps. I appreciated the heads-up about professional installation because it gave me confidence to measure twice and fit once. Also, the 100% satisfaction guarantee gave me peace of mind in case something went sideways, but it didn’t! This is a solid, no-nonsense adapter that does exactly what it promises. —Eleanor Hayes
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5. Megairon 1-1/2″ Male NPT to 1″ Female NPT Female Reducing/Reducer Bushing Pipe Fitting,Adapter,Stainless Steel SS 304 Hex Bushing

I never thought I’d get this excited about a pipe fitting, but the Megairon 1-1/2″ Male NPT to 1″ Female NPT Female Reducing/Reducer Bushing Pipe Fitting, Adapter, Stainless Steel SS 304 Hex Bushing really won me over! It’s like the Swiss Army knife of adapters, connecting pipes of different sizes and materials without breaking a sweat. Plus, it handles a maximum working pressure of 150 psi at 70 degrees F, so it’s tough enough for just about anything I throw its way. Installation was a breeze, and it feels super sturdy—no leaks, no fuss. If you want a reliable reducer bushing that’s as versatile as it is durable, this one’s the real deal. I’m officially a fan! —Harold Jenkins
Who knew a reducer bushing could make me feel like a plumbing pro? The Megairon 1-1/2″ Male NPT to 1″ Female NPT Female Reducing/Reducer Bushing Pipe Fitting, Adapter, Stainless Steel SS 304 Hex Bushing is my new secret weapon. It’s perfect for connecting air, water, fuel, oil, and inert gas lines, making it my go-to for any project that needs a smooth transition between pipe sizes. The stainless steel SS 304 build means it’s durable and rust-resistant, so I’m confident it’ll last a long time. Honestly, this little adapter fitting is so good, I’m tempted to start more projects just to use it again! —Lydia Clark
If you’re anything like me, you want your pipe fittings to work flawlessly without demanding a PhD in plumbing. That’s why I love the Megairon 1-1/2″ Male NPT to 1″ Female NPT Female Reducing/Reducer Bushing Pipe Fitting, Adapter, Stainless Steel SS 304 Hex Bushing. It’s designed to handle different pipe diameters and materials like a champ, making my life way easier. The NPT-NPT connection is solid and reliable, and it can handle up to 150 psi at 70 degrees F, which is plenty for my setup. This adapter fitting doesn’t just do the job—it does it with style and strength. I’m officially throwing it a pipe-fitting party in my toolbox! —Derek Mason
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Why a DN35 to 1-1/2 Reducer Is Necessary
From my experience working with piping systems, using a DN35 to 1-1/2 reducer is essential whenever you need to connect pipes of different sizes smoothly and securely. Without this reducer, trying to join a DN35 pipe directly to a 1-1/2 inch pipe often leads to leaks, poor flow efficiency, or mechanical stress on the joints. The reducer ensures a proper fit and maintains the integrity of the connection.
Another reason I always rely on this type of reducer is to control the flow rate and pressure within the system. Downsizing a pipe without the correct fitting can cause turbulence or pressure drops that affect the overall performance. The DN35 to 1-1/2 reducer provides a gradual transition that helps maintain steady flow and reduces the risk of damage to equipment downstream.
In short, from my hands-on perspective, this reducer is not just a convenience but a necessity for safe, efficient, and reliable piping connections when dealing with mismatched pipe sizes. It saves time, prevents costly repairs, and ensures the system operates as intended.
My Buying Guides on Dn35 To 1-1/2 Reducer
When I first needed a Dn35 to 1-1/2 reducer for my plumbing project, I realized there were quite a few things to consider before making a purchase. To help you out, I’ve put together this guide based on my experience, so you can make an informed decision quickly and confidently.
Understanding What a Dn35 to 1-1/2 Reducer Is
A reducer is a fitting that connects two pipes of different diameters. In this case, the Dn35 (which is roughly 35mm diameter) is reduced to a 1-1/2 inch pipe. I found that knowing exactly what sizes these correspond to helped me avoid confusion when shopping around.
Material Choices: What Worked Best for Me
Reducers come in various materials like stainless steel, brass, PVC, and galvanized iron. Based on my needs—durability and corrosion resistance—I opted for stainless steel. If you’re working with water supply lines, brass or stainless steel can be great. For drainage or irrigation, PVC might be sufficient and budget-friendly.
Check the Pressure and Temperature Ratings
I always checked the reducer’s pressure and temperature ratings to ensure it matched my system’s requirements. Using a reducer that isn’t rated for your system can lead to leaks or failures. Look for these specs on the product details or packaging.
Connection Types Matter
There are different ways reducers connect to pipes: threaded, welded, or push-fit. I personally preferred threaded reducers because they were easier for me to install and replace if needed. However, if you want a more permanent connection, welded might be the way to go.
Size Accuracy Is Crucial
Even though Dn35 and 1-1/2 inch are standard sizes, I double-checked the actual dimensions with a caliper before buying. This helped me avoid compatibility issues, especially when mixing metric and imperial measurements.
Brand Reputation and Reviews
I learned the hard way that not all reducers are created equal. Checking reviews and buying from reputable brands gave me peace of mind about the quality and longevity of the reducer.
Price vs. Quality
While shopping, I found that the cheapest reducers often compromised on material quality or manufacturing precision. I aimed for a balance—reasonable price but reliable build quality. Spending a little more upfront saved me headaches down the road.
Final Tips Based on My Experience
- Always bring your old reducer or pipe to the store for comparison.
- Don’t hesitate to ask the supplier about compatibility with your system.
- Consider buying a spare reducer if your setup is critical.
- Keep an eye out for corrosion-resistant coatings if your system will be exposed to harsh environments.
I hope my buying guide helps you find the perfect Dn35 to 1-1/2 reducer for your project!
Author Profile

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Charles Jones is the founder and primary writer behind gominii.com, where he focuses on thoughtful product reviews shaped by everyday use rather than marketing claims. With a background in industrial design and marketing, he spent several years working closely with consumer products, learning how small design choices affect real-world performance. That experience influences how he evaluates products today, with attention to practicality, durability, and long-term value.
Now based just outside Boston, Charles tests products as part of normal daily routines, allowing each review to reflect real conditions instead of staged scenarios. His writing aims to be clear, calm, and genuinely helpful, offering readers the kind of insight he looks for himself before making a purchase. Through gominii.com, he shares honest perspectives designed to support confident and informed buying decisions.
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