Small Inner Dia: 20mm,25mm,32mm,40mm,50mm. Widely used in building construction, bathrooms, kitchens, sinks, laboratories, etc. 3、Easy to Install，The socket openings are bonded by UPVC special glue (NOT included here).
eBay
316 Stainless Steel Reducer Union Double Ferrule Compression Connector 1/8 1/4 3/8 1/2 6 Pipe Fitting Water Gas replace Swagelok
Aliexpress UK
Connection: The pipe and pipe fitting are connected by glue. Color: deep grey.
eBay
1/10/20/50PCS PE PEG PEW Pneumatic Air Connector Reducer 3 Way T-shaped Plastic Pipe Hose Connector 4/6/8/10/12/14/16mm
Aliexpress UK
Reducing pipe fittings are great for connecting two unthreaded plumbing pipes in different outside diameters requiring high tensile and impact strength. Widely used in building construction, bathrooms, kitchens, sinks, laboratories, etc.Specification:Color: GreyMaterial: PVC (Polyvinyl Chloride)Shape: StraightHeight: 93.2mm / 3.67 inchBig Diameters: 89.14x75mm / 3.51x2.95 inch (OD*ID)Small Diameters: 60x50mm / 2.36x1.97 inch (OD*ID)Package Content: 1 x Reducer FittingAdvantage:PVC connectors with high strength, weather resistance, lightweight, moisture resistance, wear resistance, chemical corrosion resistance.Instruction:The socket openings are bonded by UPVC special glue (NOT included here). Apply glue on the inside and outside of the pipe, then insert within 1 minute, set in 15 minutes, and use after 24 hours for better effect.
eBay
304 Stainless Steel BSP Thread Pipe Fittings 1/8''-2'' Elbow 45/90 Degree, Tee, Four-Way, Reducer, Male/Female Adapter Connector
Aliexpress UK
Specification: Material: PVC Colour: Blue Type: 90° Elbow Sizes (Inner Diameter): 25mm 32mm 40mm 50mm 63mm 75mm 90mm 110mm Function:For connecting water pipes Connection: Pipe and fitting glue connection Application: Water Supply Pipe.
eBay
Brass Hex Bushing Reducer Pipe Fitting 1/8 1/4 3/8 1/2 3/4 Female to Male Thread Reducing Water Gas Adapter Coupler Connector
Aliexpress UK
Suitable for professional plumbers and DIY users, the colour variety lets you seamlessly match existing pipework for a polished finish. 🛠️ PVC 40mm Solvent Waste Pipe Fittings | Black, Grey & White | Durable Duraplast Plumbing Connectors.
eBay
Tri Clamp Reduce 1.5" 2" 2.5" 3" 3.5" 4" 5" 6" 7" 8" Ferrule O.D Reducer 304 Stainless Steel Sanitary Pipe Fitting Homebrew
Aliexpress UK
Extractor Fan Ducting Reducer High Quality. Ducting Pipes, Heat recovery Systems, Extractor Fan, Filter Spigbots, Bends. High quality ducting reducers for extract fan spigbot and pipe. 6" to 8" aka 150mm to 200mm.
eBay
SS304 Sanitary Tri Clamp Pipe Fittings - 50.5/64/77.5/91/106/119mm Sizes: Reducer, Converter, Blind Flange for Hygienic Systems
Aliexpress UK
This duct pipe reducer connector is used to connect two pipes with different diameters, widely used for drain, waste, and vent (DWV) purposes. In addition, it can be used for connecting plastic ventilation ducts, and flexible vent hoses in HVAC systems. It is suitable for use in homes, offices, kitchens, factories, or apartments.SpecificationColor: WhiteMaterial: PVCHeight: 106 mm / 4.17 inchInner Diameter: 110 x 50 mm / 4.33 x 1.97 inch (Big*Small)Outer Diameter: 120 x 58 mm / 4.72 x 2.28 inch (Big*Small)Packing List: 2 Pcs x Duct Pipe Reducer ConnectorsAdvantageReliable Material - The Duct Pipe Reducer Connector is made of durable PVC material. It is lightweight, waterproof, moisture-resistant, wear-resistant, and pressure-resistant, making it not easy to deform and suitable for long-term use.
eBay
3/4/6/8/10/12/14/16/19/20/25/32mm Hose Barb Hosetail Bulkhead Equal Reducer 304 Stainless Steel Pipe Fitting Connector Water Gas
Aliexpress UK
Specification: Material: PVC Colour: White Type: Reducing Straight Sizes: 25-110mm (Inner Diameter) Function:For connecting water pipes Connection: Pipe and fitting glue connection Application: Water Supply Pipe Installation: First, applying glue to the inside of pipe fittings and the outside of pipe; Second, insert the pipe to the pipe fittings within one minute. Pls pass water after 24 hours of installation for better effect. Features: Environmental protection, smooth wall, cold and pressure resistant, long service life ect.
eBay
2pcs 1/8" 1/4" 3/8" 1/2" BSP M5 M6 M8 M10 M12 M14 M16 M20 Female-Male Brass Reducing Pipe Fitting Reducer Pressure Gauge
Aliexpress UK