
PVC Drainage Fittings Reducing Bush
Description
Technical Parameters
We continue to promote independent innovation and technological progress, improve product quality of our uPVC Faucet Reducer Fittings, uPVC Flange, HDPE Pipe Compression End Cap and service level. We have rich resources, technical advantages, and strict product quality management and other operational guarantee systems. We provide employees with diversified career development opportunities, and at the same time, we improve the talent incentive assessment mechanism.
uPVC Pipe Fittings, uPVC Solvent Weld Fittings, uPVC Reducer Bushing, uPVC Bush, uPVC Bush Connector, uPVC Bush Reducer, uPVC Bushing Reducer, uPVC Reducing Bush

uPVC bush or uPVC bushing fittings, also known as uPVC bush reducers, are a lot like adapters, but with a focus on connecting pipes of different diameters by reducing the fitting. (Bushings cannot reduce pipe.) uPVC Bushing Reducer fittings are also typically threaded, which sets them apart from other types of fittings. This allows for different kinds of connections and makes maintenance and pipeline customization easier. Bushings are often seen in landscaping and aquaculture applications because they work better with water than metal fittings that may rust.
The uPVC bushing fittings with solvent weld is regularly UV- stability, which is suitable for both indoor & outdoor use. Made by high quality of Unplasticised Polyvinyl Chloride material, uPVC bush reducer fittings are suitable for cold water supply, with max. Working temperature 60℃.
The uPVC reducing bushing is regularly provided in grey color, but the other colors are also available as per customers’ request.
SUNPLAST uPVC solvent reducing bush fittings can be provided in a size from 25*20mm to 400*315mm, with a normal working pressure of PN10 bars & PN16 bars, and are manufactured and tested in accordance with the domestic standard GB/T10002.2-2003, at the same time, they can also comply to international standards of ISO 4422-3:1996; ISO 1542-3:2009.
More brief details as below:
Product | uPVC Reducer Bushing, uPVC Bush, uPVC Bush Connector, uPVC Bush Reducer, uPVC Bushing Reducer, uPVC Reducing Bush |
Specification | DN25*20mm ~DN400*315mm |
Pressure ratings | PN10 & PN16 |
Material | Unplasticized polyvinyl chloride |
Manufacturing Process | Injection molded |
Color | Grey, Blue, White, or as per customers request. |
Manufacturing Standard | GB/T10002.2-2003, ISO 4422-3:1996, ISO 1542-3:2009, DIN 8062 |
Samples available | Yes, samples are available, but charged. |
Packing method | Cartons |
MOQ | Negotiable |
Customized Logo available (OEM Service) | For small quantity of order, customer logo can be marked on the fittings by laser marking or sticker. For big quantity of order, customer logo can be embossed on the fittings. |
Production lead time | Mass stock available for regular sizes About 10 days for a 20ft container, 20 days for a 40ft container |
Warranty time | 5 years for normal use |
Payment term | T/T, L/C, DP, Western Union, or negotiable |
FOB loading port | Ningbo/Shanghai China |
Place of origin | Ningbo, China |
Product Specifications
uPVC Reducing Bush Fittings: available from DN25*20mm ~DN400*315mm
Pressure: PN10 bars & PN16 bars
Color: Grey, Blue, White, or as per customer request.

Size De | Dimensions | |||||
d0 | d1 | d2 | d | T | L | |
25*20 | 25.1 | 20.24 | 19.96 | 19 | 17 | 19 |
32*25 | 32.2 | 25.24 | 24.95 | 24 | 19.5 | 22.2 |
40*32 | 40.1 | 32.25 | 31.95 | 31 | 23 | 26.5 |
50*40 | 50.06 | 40.28 | 39.95 | 39 | 27 | 30.6 |
63*50 | 63.1 | 50.33 | 49.94 | 49 | 32 | 38 |
75*63 | 75.1 | 63.34 | 62.93 | 62 | 38.5 | 44 |
90*75 | 90.1 | 75.35 | 74.93 | 73 | 44.5 | 51 |
110*90 | 110.1 | 90.38 | 89.93 | 88.5 | 52 | 60.5 |
125*110 | 125.1 | 110.42 | 109.92 | 108 | 62 | 68.5 |
140*110 | 140.1 | 110.42 | 109.92 | 108 | 62 | 76.7 |
140*125 | 140.1 | 125.52 | 124.93 | 123 | 69.5 | 76.7 |
160*110 | 160.1 | 110.42 | 109.92 | 108 | 62 | 86 |
160*140 | 160.1 | 140.58 | 139.88 | 138 | 77 | 86 |
180*160 | 180.1 | 160.62 | 159.87 | 158 | 87 | 96 |
200*160 | 200.1 | 160.62 | 159.87 | 158 | 87 | 106 |
200*180 | 200.1 | 180.81 | 179.91 | 178.5 | 97 | 106 |
225*160 | 225.2 | 160.62 | 159.87 | 158 | 87 | 119.8 |
225*200 | 225.2 | 200.9 | 199.85 | 197 | 107 | 118 |
250*200 | 250.2 | 200.9 | 199.85 | 197 | 107 | 128.4 |
250*225 | 250.2 | 226.02 | 224.83 | 221 | 119.5 | 128.4 |
280*225 | 280.1 | 226.02 | 224.83 | 221 | 119.5 | 145.5 |
315*280 | 315.1 | 281.46 | 280.16 | 278 | 147 | 164 |
400*315 | 400.1 | 316.55 | 315.05 | 312 | 165 | 216 |
(Noted: the technical data is just for reference, some data may change, if you need exact data, then please contact us directly)
Benefits Of uPVC Solvent Weld Joint Fittings
uPVC solvent weld fittings have become the most common accessories for uPVC pipe, a number of performance benefits as below:
© Easy to install: uPVC solvent weld fittings are very easy to install, no special tools or machine, just with inexpensive tools and cleaner / glue
© Excellent chemical resistance: uPVC pipe fittings are resistant to many acids, alkali, bases and salts.
© Wide temperature rating of 0~60℃.
© UV resistant / stabilised: uPVC fittings contains UV stabilising additives, which allow for outdoor use.
© Excellent corrosion resistance: uPVC pipe fittings don’t scale, pit or rust.
© Smooth interior walls provide a high consistent flow rate and low friction loss.
© Environment-friendly: uPVC Pipe Fittings can be recycled.
© Impact Strength: Under normal conditions, uPVC pipe fittings possess relatively high resistance to impact damage when compared to the fittings made from clay, concrete and most other conventional material.
Technical Parameter
SUNPLAST uPVC solvent weld joint fittings are manufactured into our national standard GB/T10002.2-2003, the fittings can be complied with ISO 4422-3:1996, ISO 1542-3:2009 standard, as well DIN8063 standard.
Major technical parameter as below:
Characteristic | Requirement | ||||
Vic. Soft Temperature | ≥74℃ | ||||
Dry Oven Test | Accord with GB/T 8803-2001 | ||||
Drop Shutter Test | No Crack with all samples | ||||
Hydraulic Pressure Test | Normal Outer Dia. dn | Temperature ℃ | Pressure Mpa | Time H | Requirement |
dn≤90 | 20 | 4.2×PN | 1 | No Crack No Leak | |
3.2×PN | 1000 | ||||
dn>90 | 20 | 3.36×PN | 1 | ||
2.56×PN | 1000 | ||||
Quality Control
As a premier manufacturer in China, we committed to supply the best quality uPVC pipe fittings to our customers. Every production processes from the start to end are strictly monitored and recorded. Well-trained staffs are exercising inspection and quality control using calibrated equipment.

All tests are carried out in our laboratory and the results have been properly recorded. We assure that only products which pass our stringent testing in compliance with the relevant standard’s requirements will only be released or delivered to our customers.
Contact Us
If you have any requirements on uPVC fittings, or any question on our fittings, please contact us freely. SUNPLAST has well trained staff who are available to address your needs and provide technical support to all sectors when needed.

Since the establishment of our company, in line with the spirit of being honest and striving upward, we have provided high-quality and cost-effective PVC Drainage Fittings Reducing Bush for customers. People are the main body of enterprises and the most active factor in productivity. Every employee of our company will serve customers with good work quality and after-sales service from the perspective of users.
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