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FaucetsAir QualityAir ToolsAll Garage StorageBathroom HardwareBathroom PlumbingBrackets and Angle IronsConduits and FittingsDeckingDimmers, Switches, and Wall PlatesElectrical ToolsFastenersFireplacesGarage Shelves and RacksGuttering & DrainageHand ToolsHVAC Ducting and VentilationKitchen PlumbingOutletsPipes, Fittings & AccessoriesPlumbing Tools & AccessoriesPower Tool AccessoriesRoofingShop Plumbing BrandsShop Plumbing by FixtureStovesValves & Valve RepairWater Filtration & Water SoftenersWater Heaters
Pipe Reducer(1000+)
Uses item details. Price when purchased online
Van Enterprises 2" to 1.5" Reducer Male Nipple Fitting Adapter - Octagon - MNPT - Schedule 80 $8.25

Sponsored
$825
current price $8.25Van Enterprises 2" to 1.5" Reducer Male Nipple Fitting Adapter - Octagon - MNPT - Schedule 80
Repa Market 6" to 4" Round Plastic Duct Reducer - PVC Pipe Increaser, HVAC Exhaust, Intake From $7.95

Sponsored
From$795
Repa Market 6" to 4" Round Plastic Duct Reducer - PVC Pipe Increaser, HVAC Exhaust, Intake
Unique Bargains 3.5" OD to 5" OD Mandrel Exhaust Bend Elbow Concentric Reducer 201 Stainless Steel Pipe Adapter 5 inch Length Silver Tone $23.89

Sponsored
$2389
current price $23.89Unique Bargains 3.5" OD to 5" OD Mandrel Exhaust Bend Elbow Concentric Reducer 201 Stainless Steel Pipe Adapter 5 inch Length Silver Tone
Repa Market 4" to 3" Inch Round Galvanized Steel Duct Reducer - Pipe Increaser Reducer From $12.95

Sponsored
From$1295
Repa Market 4" to 3" Inch Round Galvanized Steel Duct Reducer - Pipe Increaser Reducer
Imperial GV1749 HVAC Duct Pipe Taper Reducer, Galvanized, 24 Gauge, 6 x 3 In. - Quantity 1 $20.48

$2048
current price $20.48Imperial GV1749 HVAC Duct Pipe Taper Reducer, Galvanized, 24 Gauge, 6 x 3 In. - Quantity 1
5 out of 5 stars
All Tool Depot Brass Reducer Hex Bushing Threaded Pipe Fitting 1/2" NPT Male x 1/4" NPT Female Adapter (1 Pack) $7.98

$798
current price $7.98All Tool Depot Brass Reducer Hex Bushing Threaded Pipe Fitting 1/2" NPT Male x 1/4" NPT Female Adapter (1 Pack)
5 out of 5 stars
Genova Products 70142 Charlotte 2 x 4 Pipe Increaser Reducer DWV (Drain, Waste and Vent) (1 Unit Piece), 4" x 2" $17.21

$1721
current price $17.21Genova Products 70142 Charlotte 2 x 4 Pipe Increaser Reducer DWV (Drain, Waste and Vent) (1 Unit Piece), 4" x 2"
TAISHER 5PCS 304 Stainless Steel Reducer Hex Bushing, 3/4" NPT Male x 1/2" NPT Female, Reducing Pipe Adapter Fitting From $11.49

7 options
Available in additional 7 optionsFrom$1149
TAISHER 5PCS 304 Stainless Steel Reducer Hex Bushing, 3/4" NPT Male x 1/2" NPT Female, Reducing Pipe Adapter Fitting
3 out of 5 stars
Imperial Manufacturing Group Furnace Pipe Reducer - Galvanized Steel - 5 in x 6 in $19.67

$1967
current price $19.67Imperial Manufacturing Group Furnace Pipe Reducer - Galvanized Steel - 5 in x 6 in
Repa Market 4" to 3" Inch Round Galvanized Steel Duct Reducer - Pipe Increaser Reducer From $12.95

11 options
Available in additional 11 optionsFrom$1295
Repa Market 4" to 3" Inch Round Galvanized Steel Duct Reducer - Pipe Increaser Reducer
Reducing Nipple 3" x 2" Male NPT, 5 Pack From $10.94

Sponsored
From$1094
Reducing Nipple 3" x 2" Male NPT, 5 Pack
5 out of 5 stars
5 Pcs XFITTING Pex 1 inch x 3/4 Inch Pex Reducing Elbow Crimp Fitting, 25-4-8=5X $19.99

Sponsored
$1999
current price $19.995 Pcs XFITTING Pex 1 inch x 3/4 Inch Pex Reducing Elbow Crimp Fitting, 25-4-8=5X
Repa Market 3" up to 6" Inch Duct Reducer-Increaser - Plastic Pipe Connector, Adapter From $7.95

2 options
Available in additional 2 optionsFrom$795
Repa Market 3" up to 6" Inch Duct Reducer-Increaser - Plastic Pipe Connector, Adapter
3.7 out of 5 stars
1/2" to 3/8" Brass Compression Reducer Adapter, 3/8" to 1/2" Water Supply Pipe Fitting for RV Kitchen Water Line, 3 PCS $10.00

$1000
current price $10.001/2" to 3/8" Brass Compression Reducer Adapter, 3/8" to 1/2" Water Supply Pipe Fitting for RV Kitchen Water Line, 3 PCS
Reducer Coupling Reducer, 1-1/2" x 3/4" Pipe, FNPT, Malleable Iron, Class 150 $16.81

$1681
current price $16.81Reducer Coupling Reducer, 1-1/2" x 3/4" Pipe, FNPT, Malleable Iron, Class 150
5 out of 5 stars
Charlotte Pipe PVC Reducer Bushing - Schedule 40, SPG x FPT - 2 In x 1-1/4 In $9.36

$936
current price $9.36Charlotte Pipe PVC Reducer Bushing - Schedule 40, SPG x FPT - 2 In x 1-1/4 In
PVC Reducer, Hub, 3 in x 2 in Pipe Size 1WKJ3 $15.23

$1523
current price $15.23PVC Reducer, Hub, 3 in x 2 in Pipe Size 1WKJ3
Clearance, YOUHO Brass Pipe Fitting, Hex Bushing, 1/4" NPT Male x 1/8" NPT Female Brass Reducer (10-PCS) From $5.99
Clearance

11 options
Available in additional 11 optionsFrom$599
YOUHO Brass Pipe Fitting, Hex Bushing, 1/4" NPT Male x 1/8" NPT Female Brass Reducer (10-PCS)
3.9 out of 5 stars
Best seller, 1/2 to 3/8 Reducer Faucet Adapter with Rubber Washer, Compression Brass Pipe Fitting, 2‑Pack, Easy Connect for Kitchen, Bathroom & RV Supply Lines From $10.98
Best seller

2 options
Available in additional 2 optionsFrom$1098
1/2 to 3/8 Reducer Faucet Adapter with Rubber Washer, Compression Brass Pipe Fitting, 2‑Pack, Easy Connect for Kitchen, Bathroom & RV Supply Lines
4.7 out of 5 stars
Teal Turtle Single Wall Black Stove Pipe Reducer 8 Inch to 7 Inch 24 Gauge $38.25

$3825
current price $38.25Teal Turtle Single Wall Black Stove Pipe Reducer 8 Inch to 7 Inch 24 Gauge
Unique Bargains Car Mandrel Exhaust Bend Elbow Pipe 304 Stainless Steel Concentric Reducer 1.5" OD to 3" OD $9.49

Sponsored
$949
current price $9.49Unique Bargains Car Mandrel Exhaust Bend Elbow Pipe 304 Stainless Steel Concentric Reducer 1.5" OD to 3" OD
Unique Bargains 304 Stainless Steel Pipe Fittings 2"Male x 1/2"Female BSPT Reducer Bushing Adapter 2 Pcs $21.49

Sponsored
$2149
current price $21.49Unique Bargains 304 Stainless Steel Pipe Fittings 2"Male x 1/2"Female BSPT Reducer Bushing Adapter 2 Pcs
5 out of 5 stars
Uxcell 6" ID-5.6" OD Stainless Steel Stove Pipe Reducer Connector 2 Pcs , Exhaust Duct Increaser Reducer, Round Pipe Coupler Fitting, for Wood Stoves Fireplaces Camping, Silver $36.09

$3609
current price $36.09Uxcell 6" ID-5.6" OD Stainless Steel Stove Pipe Reducer Connector 2 Pcs , Exhaust Duct Increaser Reducer, Round Pipe Coupler Fitting, for Wood Stoves Fireplaces Camping, Silver
Imperial 8 in. D X 6 in. D Galvanized Steel Furnace Pipe Reducer $26.67

$2667
current price $26.67Imperial 8 in. D X 6 in. D Galvanized Steel Furnace Pipe Reducer
Reducer Reducer, 1-1/4" x 1/2" Pipe, FNPT, Malleable Iron, Class 150 5P571 $15.35

$1535
current price $15.35Reducer Reducer, 1-1/4" x 1/2" Pipe, FNPT, Malleable Iron, Class 150 5P571
5 out of 5 stars
Stainless Steel Concentric Pipe Reducer Increaser 2" to 1 1/2" 304 Grade 1 Pack $27.09

$2709
current price $27.09Stainless Steel Concentric Pipe Reducer Increaser 2" to 1 1/2" 304 Grade 1 Pack
Charlotte Pipe Reducing Bushing 2 " X 1-1/4 " White Pvc Schedule 40 $9.20

$920
current price $9.20Charlotte Pipe Reducing Bushing 2 " X 1-1/4 " White Pvc Schedule 40
Imperial 7 in. D X 5 in. D Galvanized Steel Furnace Pipe Reducer $25.29

$2529
current price $25.29Imperial 7 in. D X 5 in. D Galvanized Steel Furnace Pipe Reducer
5 out of 5 stars
Best seller, 1/2 to 3/8 Reducer Faucet Adapter - Compression Brass Pipe Fitting, 3/8 Male to 1/2 Male Supply Line Adapter for RV Kitchen Plumbing, Water Hose Pipe Connector with Rubber Washer, (2 Pack) $10.00
Best seller

$1000
current price $10.001/2 to 3/8 Reducer Faucet Adapter - Compression Brass Pipe Fitting, 3/8 Male to 1/2 Male Supply Line Adapter for RV Kitchen Plumbing, Water Hose Pipe Connector with Rubber Washer, (2 Pack)
3.9 out of 5 stars
Teal Turtle 7 to 6 Inch Black Single Wall Stove Pipe Reducer 24 Gauge $33.39

$3339
current price $33.39Teal Turtle 7 to 6 Inch Black Single Wall Stove Pipe Reducer 24 Gauge
Pipe Fitting Reducing Adapter, G3/4" x 3/4" NPT Reducer Connector, Silver $13.99

Sponsored
$1399
current price $13.99Pipe Fitting Reducing Adapter, G3/4" x 3/4" NPT Reducer Connector, Silver
Rubber Coupling - Reducer Pipe Size: 4" x 3" $20.85

$2085
current price $20.85Rubber Coupling - Reducer Pipe Size: 4" x 3"
5 out of 5 stars
Uxcell Reducing Coupling Increaser Reducer Coupling Pipe Fittings Black 3/4 x 1/2" 1Pcs From $7.39

15 options
Available in additional 15 optionsFrom$739
Uxcell Reducing Coupling Increaser Reducer Coupling Pipe Fittings Black 3/4 x 1/2" 1Pcs
1 1/2" 1.5" OD to 2" OD Universal Exhaust Pipe to Component Adapter Reducer 1pcs $15.99

$1599
current price $15.991 1/2" 1.5" OD to 2" OD Universal Exhaust Pipe to Component Adapter Reducer 1pcs
Couplings Company 110JC Brass 1/4 in FNPT x 3/4 in MNPT Hex Bushing Pipe Fitting Reducer $10.95

$1095
current price $10.95Couplings Company 110JC Brass 1/4 in FNPT x 3/4 in MNPT Hex Bushing Pipe Fitting Reducer
5 out of 5 stars
Uxcell 2 Pcs 5/8" to 1/2" Hose Barb Reducer Pipe Fitting 304 Stainless Steel Hose Pipe Fitting Silver $10.20

$1020
current price $10.20Uxcell 2 Pcs 5/8" to 1/2" Hose Barb Reducer Pipe Fitting 304 Stainless Steel Hose Pipe Fitting Silver
Unique Bargains 3"OD to 4"OD Mandrel Exhaust Bend Elbow Concentric Reducer Pipe Adapter $18.99

$1899
current price $18.99Unique Bargains 3"OD to 4"OD Mandrel Exhaust Bend Elbow Concentric Reducer Pipe Adapter
Fernco PNH-215 Pipe Reducing Coupling, 2" x 1-1/2" $10.53

$1053
current price $10.53Fernco PNH-215 Pipe Reducing Coupling, 2" x 1-1/2"
PVC Reducer, Hub, 4 in x 2 in Pipe Size 1WKJ4 $22.00

$2200
current price $22.00PVC Reducer, Hub, 4 in x 2 in Pipe Size 1WKJ4
Repa Market 6" to 4" Round Plastic Duct Reducer - PVC Pipe Increaser, HVAC Exhaust, Intake From $7.95

3 options
Available in additional 3 optionsFrom$795
Repa Market 6" to 4" Round Plastic Duct Reducer - PVC Pipe Increaser, HVAC Exhaust, Intake
Charlotte Pipe Reducing Tee 1 " X 1 " X 3/4 " White Pvc Schedule 40 $7.98

$798
current price $7.98Charlotte Pipe Reducing Tee 1 " X 1 " X 3/4 " White Pvc Schedule 40
Imperial 9 in. D X 8 in. D Galvanized Steel Furnace Pipe Reducer $24.70

$2470
current price $24.70Imperial 9 in. D X 8 in. D Galvanized Steel Furnace Pipe Reducer
5 out of 5 stars
Banjo Poly Pipe Reducer Bushing 3/4" MPT X 1/2" FPT - RB075-050 $11.22

$1122
current price $11.22Banjo Poly Pipe Reducer Bushing 3/4" MPT X 1/2" FPT - RB075-050
Novixy 304 Stainless Steel Sanitary Pipe Reducer Fitting, 3" to 2" Tri Clamp Ferrule Adapter for Food Grade Beverage Water Oil Systems $24.63

$2463
current price $24.63Novixy 304 Stainless Steel Sanitary Pipe Reducer Fitting, 3" to 2" Tri Clamp Ferrule Adapter for Food Grade Beverage Water Oil Systems
LTWFITTING Brass Pipe Hex Bushing Reducer Fittings 1/2 Inch Male x 1/8 Inch Female NPT(Pack of 25) $33.98

$3398
current price $33.98LTWFITTING Brass Pipe Hex Bushing Reducer Fittings 1/2 Inch Male x 1/8 Inch Female NPT(Pack of 25)
2pcs 2.5" 2-1/2 OD to 2.75" 2-3/4 ID Exhaust Component to Pipe Adapter Reducer $13.75

$1375
current price $13.752pcs 2.5" 2-1/2 OD to 2.75" 2-3/4 ID Exhaust Component to Pipe Adapter Reducer
5 out of 5 stars
1/2" x 1/4" Yellow Brass Female to Female Coupling Reducer Pipe Fitting 119FC $11.49

$1149
current price $11.491/2" x 1/4" Yellow Brass Female to Female Coupling Reducer Pipe Fitting 119FC
2 ID to 2.5" 2 1/2 ID Exhaust Pipe Tube Adapter Reducer Universal New $7.65

$765
current price $7.652 ID to 2.5" 2 1/2 ID Exhaust Pipe Tube Adapter Reducer Universal New
5 out of 5 stars
2 1/2 2.5" OD to 2 3/4 2.75" ID Exhaust Component to Pipe Adapter Reducer $7.35

$735
current price $7.352 1/2 2.5" OD to 2 3/4 2.75" ID Exhaust Component to Pipe Adapter Reducer
FAQ
How do I pick the right size pipe reducer?
Choosing the right size pipe reducer depends on the diameters of the pipes you're connecting. Start by measuring the outside diameter (OD) or inside diameter (ID) of both pipes. Then, look for a reducer that matches those measurements.
- Check if your pipes are measured in inches or millimeters.
- Consider the material compatibility—PVC, brass, and galvanized steel reducers are common options.
- Make sure the reducer fits the type of connection you need, like compression, threaded, or slip-on.
Can I use a pipe reducer for plumbing repairs?
Yes, pipe reducers are often used in plumbing repairs to connect pipes of different sizes. They're handy for adapting water supply lines, drainage systems, or even HVAC ducts.
- Choose a reducer made from a material that's safe for your application, such as lead-free brass for drinking water lines.
- Make sure the reducer matches your pipe type—compression, threaded, or push-fit.
- Always follow local plumbing codes and manufacturer instructions for installation.
What tools do I need to install a pipe reducer?
The tools you'll need depend on the type of pipe and reducer you're working with. For most installations, you might use:
- A pipe cutter or hacksaw for cutting pipes to length
- Wrenches or pliers for tightening threaded connections
- Pipe cleaner or sandpaper for prepping surfaces
- Pipe thread sealant or plumber's tape for threaded joints
Are pipe reducers safe for hot water lines?
Many pipe reducers are designed to handle hot water, but it's important to check the product specifications.
- Look for materials like brass or certain plastics that are rated for high temperatures.
- Verify the reducer's temperature and pressure ratings to match your system's requirements.
- For HVAC or furnace applications, make sure the reducer is suitable for the intended use.
How do I maintain or clean a pipe reducer?
Maintaining a pipe reducer is usually straightforward.
- Periodically check for leaks or signs of corrosion, especially in metal reducers.
- For water lines, flush the system occasionally to help prevent buildup.
- If you notice mineral deposits or debris, gently clean the area with a soft brush and mild cleaner.
- Avoid harsh chemicals that could damage the reducer or connected pipes.
Popular in Pipe Reducer Fittings for Home Improvement Projects
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