SCH 40 pvc pipe fitting dimensions are based on the American National Standard (ASTM D2466) and cover multiple specifications. The following are common pipe fitting types and their standard sizes.
SCH 40 PVC pipe diameter dimensions (outer diameter and wall thickness)
| Nominal Size | OD | Wall Thickness | ID |
| 1/2 inch | 0.840 inch | 0.109 inch | 0.602 inch |
| 3/4 inch | 1.050 inch | 0.113 inch | 0.804 inch |
| 1 inch | 1.315 inch | 0.133 inch | 1.049 inch |
| 1-1/4 inch | 1.660 inch | 0.140 inch | 1.380 inch |
| 1-1/2 inch | 1.900 inch | 0.145 inch | 1.610 inch |
| 2 inch | 2.375 inch | 0.154 inch | 2.047 inch |
| 3 inch | 3.500 inch | 0.216 inch | 3.042 inch |
| 4 inch | 4.500 inch | 0.237 inch | 3.998 inch |
| 6 inch | 6.625 inch | 0.280 inch | 6.065 inch |
Note: The outside diameter (OD) is fixed, and the wall thickness determines the inside diameter (ID) of the pipe.
Common SCH 40 PVC Pipe Fittings and Standard Sizes
| Pipe fitting types | Specification range | illustrate |
| Coupling | 1/2″ – 12″ | Connecting two pipes of the same size |
| Elbow | 1/2″ – 12″（common 45° / 90°） | Changing the direction of a pipe |
| Tee | 1/2″ – 12″ | Connect three pipes |
| Cross | 1/2″ – 6″ | Connect four pipes |
| Reducer | 3/4″ – 12″ | Connecting pipes of different sizes |
| Flange | 1/2″ – 12″ | For bolted connections |
| Threaded Adapter | 1/2″ – 6″ | For threaded pipe connections |
Application areas
1. Residential and commercial water supply and drainage systems
SCH 40 PVC pipe fittings are commonly used in cold water pipes and drainage pipes in buildings.
Its corrosion resistance makes it a long-lasting and durable solution.
2. Agricultural irrigation system
Its light weight and easy installation make it an ideal choice for farm irrigation systems.
Chemical corrosion resistance, suitable for conveying fertilizers, pesticide solutions, etc.
3. Industrial fluid transportation
Suitable for scenes such as chemical plants and manufacturing plants that need to convey medium and low pressure liquids.
Can be used for the transportation of corrosive chemicals, such as acid and alkali solutions.
4. Swimming pools and water treatment systems
SCH 40 PVC is suitable for swimming pool water circulation systems, filtration systems, etc.
It can resist the erosion of water treatment chemicals such as chlorine.
5. Cable pipe protection
It can be used for protective pipes for underground cables to provide insulation and mechanical protection.
Advantages of SCH 40 PVC pipe fittings
1. Strong corrosion resistance
Good resistance to most acids, alkalis and chemicals, not easy to rust or corrode.
2. Easy installation
Using glue bonding or threaded connection, no complex tools are required, and the construction is fast.
3. Lightweight and high strength
Compared with metal pipes, PVC pipes are lighter, easier to transport and install, and have good strength.
4. Good fluid conveying performance
The smooth inner wall reduces fluid resistance, increases flow rate, and reduces energy consumption.
5. Economical and affordable
Low material cost, long service life, and low maintenance cost make it an economical and efficient choice.
How to choose the right SCH 40 PVC pipe fittings?
1. Choose according to pressure requirements: SCH 40 is suitable for low to medium pressure applications, such as drainage, irrigation, etc. If higher pressure bearing capacity is required, consider SCH 80 pvc pipe fitting.
2. Choose according to pipe diameter: Make sure the pipe fittings match the pipe diameter to avoid leakage at the connection.
3. Check standard certification: Buy PVC pipe fittings that meet ASTM D2466 or NSF certification to ensure quality and safety.
4. Consider environmental factors: If the pipe is exposed to sunlight, choose UV-resistant PVC, or use black PVC pipe to prevent UV damage.
SCH 40 PVC pipe fittings are ideal for water supply and drainage, agricultural irrigation, industrial fluid transportation and other fields due to their excellent corrosion resistance, easy installation and economy. Understanding the SCH 40 pvc pipe fitting dimensions and applications of different specifications will help you make the right selection and ensure the stability and efficient operation of the system.
