
Holman PVC pressure pipe fittings are suitable for a range of watering applications, including water supply, recycled water, irrigation, pressure sewerage and industrial applications. A PVC Pressure Barrel Union (CAT No.22) is used to break the line and allow access for maintenance. The locking nut can be unscrewed to allow a section of pipe or a fitting to be removed. Often a barrel union is used in front of a check valve or a pump to isolate it and to have the ability to break the line. Commonly used in irrigation or pool applications.
- Complies to Australian standards AS/NZS 1477
- Watermarked approved
PVC Barrel Unions
PVC Barrel Union 15mm SKU: FPF-BU15 |
$5.36 $8.67 |
PVC Barrel Union 20mm SKU: FPF-BU20 |
$4.51 $7.30 |
PVC Barrel Union 25mm SKU: FPF-BU25 |
$6.67 $9.37 |
PVC Barrel Union 32mm SKU: FPF-BU32 |
$11.40 $15.53 |
PVC Barrel Union 40mm SKU: FPF-BU40 |
$21.06 $26.09 |
PVC Barrel Union 50mm SKU: FPF-BU50 |
$16.91 $25.56 |
Product Description
Holman PVC pressure pipe fittings are suitable for a range of watering applications, including water supply, recycled water, irrigation, pressure sewerage and industrial applications. A PVC Pressure Barrel Union (CAT No.22) is used to break the line and allow access for maintenance. The locking nut can be unscrewed to allow a section of pipe or a fitting to be removed. Often a barrel union is used in front of a check valve or a pump to isolate it and to have the ability to break the line. Commonly used in irrigation or pool applications.
- Complies to Australian standards AS/NZS 1477
- Watermarked approved
Videos

Product Specifications
PVC Barrel Union 15mm | PVC Barrel Union 20mm | PVC Barrel Union 25mm | PVC Barrel Union 32mm | PVC Barrel Union 40mm | PVC Barrel Union 50mm | |
---|---|---|---|---|---|---|
Product Type | Barrel Union | Barrel Union | Barrel Union | Barrel Union | Barrel Union | Barrel Union |
Product Material | PVC | PVC | PVC | PVC | PVC | PVC |
Product Colour | White | White | White | White | White | White |
Product Inlet Pipe Size | 15mm PVC | 20mm PVC | 25mm PVC | 32mm PVC | 40mm PVC | 50mm PVC |
Product Max. Inlet Pressure (kPa) | 1200 | 1200 | 1200 | 1200 | 1200 | 1200 |
Class 12 PVC FAQs
Irrigation systems utilise a variety of pipes, each offering unique advantages. Polyethylene (poly) pipe is a popular choice due to its flexibility, durability and suitability for underground installation. Another standard option is the PVC pipe, valued for its corrosion resistance. Interestingly different parts of Australia, have their different preferences! For applications requiring superior strength and durability, such as central water connections, brass fittings and valves are often preferred because they are highly resistant to corrosion and wear. Copper pipes, while less common in modern systems due to their higher cost, are still valued for their exceptional resilience from ground movement.
The size of piping depends on a number of factors, but the main one is the length of the run. Longer pipe lengths also necessitate larger diameters to minimise friction loss. Higher water pressure allows for smaller pipes, but excessively high pressure may require larger sizes to handle the force. Finally, the desired flow rate at the endpoint also influences the pipe size you’ll need. For more comprehensive assistance, please reach out to our experts.
Preventing leaks in your irrigation system starts with using the right fittings for your pipe type and adequately preparing the pipe ends for a secure connection. Apply thread tape to threaded fittings and appropriate sealant for solvent-welded connections. Tighten fittings securely, but avoid over-tightening. Regularly inspect your system for any signs of leaks to address potential issues promptly.
Yes, burying irrigation pipes underground is a common practice and offers several advantages. It protects the pipes from damage, reduces water evaporation and keeps them out of sight for a cleaner landscape aesthetic.
However, it’s crucial to choose the right type of pipe for underground installation. Polyethylene (poly) pipe is specifically designed for this purpose, thanks to its flexibility and durability. Always check local building codes and regulations for any requirements regarding underground pipe installation.
You might also like...
Need more help with Class 12 PVC ? Check out these handy resources from our Help Centre