What is a 40mm PVC union used for?
It connects two sections of compatible 40mm PVC pipe while creating a removable joint that can be opened later for maintenance or equipment replacement.
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PVC Socket Union 40mm x 40mm - Solvent Weld Irrigation Pipe Fitting
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643
£6.43
Unit price perEstimated delivery between November 01 and November 03.
This 40mm x 40mm PVC Socket Union is a detachable solvent-weld pipe fitting designed to connect two sections of 40mm metric PVC pipe while allowing the pipework to be separated later for servicing, cleaning or system modification.
Unlike a conventional straight socket, the central union can be unscrewed to separate the two sides without cutting the surrounding pipework. This makes it particularly useful around pumps, filters, valves and other components that may need to be removed periodically.
Both ends accept 40mm metric PVC pipe and are designed to be permanently bonded using suitable PVC solvent cement. Once installed, the central union provides a convenient removable connection point within an otherwise permanent pipe system.
A practical choice for professional irrigation, nursery water systems, agriculture, aquaculture and other rigid PVC installations where reliable water distribution and future maintenance access are important.
Why use a 40mm PVC Socket Union?
- Detachable connection - allows sections of pipework to be separated without cutting the pipe.
- 40mm x 40mm configuration - designed for equal-size 40mm metric PVC pipework.
- Solvent-weld sockets - creates permanent connections between the union ends and compatible pipe.
- Removable centre section - ideal for components that require periodic maintenance or replacement.
- Rigid PVC construction - lightweight, durable and resistant to corrosion.
- Useful around pumps and filters - makes equipment removal significantly easier.
- Reusable union connection - disconnect and reassemble the central joint while leaving the surrounding pipework in place.
- Professional irrigation fitting - suitable for commercial horticulture, agriculture and water-management installations.
Permanent pipework with a removable connection
A PVC union provides the reliability of solvent-weld pipework while creating a deliberate point at which the system can later be separated.
The two outer sockets are solvent welded permanently to the 40mm pipe. The central threaded union nut then secures the two halves of the fitting together around the union seal.
When maintenance is required, the water system can be isolated and the union disconnected. The equipment or relevant section of pipework can then be removed without disturbing the permanent solvent-weld joints.
Ideal for irrigation & water-management systems
Socket unions can be incorporated throughout rigid PVC pipe networks, but they are especially valuable next to equipment that is likely to need servicing during the life of the installation.
- Commercial irrigation systems
- Nursery and glasshouse water distribution
- Pump installations
- Filtration systems
- Valve assemblies
- Fertigation systems
- Water-storage and transfer systems
- Aquaculture and aquaponic installations
- Ponds and water features
- General 40mm metric PVC pipework
Make pumps, filters & valves easier to service
Planning service points into an irrigation system during installation can save considerable time later.
A pump or filter installed entirely between permanent solvent-weld joints may require pipework to be cut when the component eventually needs removing. Installing unions at suitable points creates intentional breaks in the system instead.
Once safely isolated and depressurised, the union can be opened and the component removed. After servicing or replacement, the union can simply be reassembled.
Installing a 40mm PVC Socket Union
- Plan the position of the union before permanently assembling the pipe system.
- Cut the 40mm PVC pipe squarely and remove burrs from the cut edges.
- Ensure the pipe and socket surfaces are clean, dry and correctly prepared.
- Dry-fit the components first to confirm alignment and orientation.
- Use suitable PVC cleaner and solvent cement according to the manufacturer's instructions.
- Insert the pipe fully into each socket and allow the solvent-weld joints to cure correctly.
- Keep the union sealing surfaces clean and correctly seated during assembly.
- Tighten the union securely without applying unnecessary excessive force.
- Allow the solvent-weld joints to cure for the specified period before operating the system.
- Check the completed installation carefully for leaks when commissioning the pipework.
40mm metric PVC pipe compatibility
This fitting is intended for a 40mm metric PVC pipe system. Compatible pipe with a 40mm outside diameter inserts into the plain sockets before being solvent welded into position.
Metric pressure pipe and fittings should not be assumed to fit similarly named imperial pipe or standard UK waste pipe. Always check the actual pipe system and outside diameter before installation.
For a reliable joint, use PVC preparation products and solvent cement suitable for the specific pipe and fittings being installed.
Where should a PVC union be positioned?
For serviceable equipment, unions are normally most useful when positioned so the component can be removed without dismantling the rest of the installation.
For example, installing appropriate unions either side of a pump or filter can allow the complete component to be removed after the water supply has been safely isolated. This is particularly valuable in professional irrigation systems where downtime needs to be kept to a minimum.
40mm PVC Socket Union product details
| Product type | PVC socket union |
|---|---|
| Size | 40mm x 40mm |
| Pipe system | Metric PVC |
| Connection | Plain socket x plain socket |
| Jointing method | Solvent weld / solvent cement |
| Compatible pipe size | 40mm outside diameter metric PVC pipe |
| Material | PVC |
| Union type | Detachable central screw union |
| Primary application | Irrigation and water-management pipework |
| Suitable for | Irrigation, pumps, filters, valves, water distribution, aquaculture and compatible rigid PVC systems |
40mm PVC Socket Union FAQs
Does this union fit 40mm PVC pipe?
Yes. The plain sockets are designed for compatible metric PVC pipe with a 40mm outside diameter.
Are both ends solvent weld?
Yes. Both plain socket ends are designed to be bonded to compatible 40mm PVC pipe using suitable solvent cement.
Can I disconnect it after the pipe has been glued?
Yes. The outer socket joints remain permanently bonded to the pipe, while the central union can be unscrewed to separate the two sides.
Where is a union most useful in an irrigation system?
They are particularly useful next to pumps, filters, valves and other components that may need to be removed periodically for servicing or replacement.
What is the difference between a socket union and a straight socket?
A conventional straight socket permanently joins two pipes. A union performs the same basic connection function but adds a detachable centre, allowing the pipework to be separated later.
Is the 40mm measurement the pipe outside diameter?
Yes. Metric PVC pipe systems are commonly specified by the pipe's outside diameter, so compatible 40mm pipe has a nominal outside diameter of 40mm.
Will standard UK 40mm waste pipe fit?
Do not assume so. Metric PVC pressure systems and standard waste-pipe systems can use different dimensions and fitting standards. Confirm the pipe type and actual dimensions before installation.
Do I glue the threaded centre of the union?
No. The plain sockets are solvent welded to the pipe, while the central union must remain detachable so it can be opened for maintenance.
Can this fitting be used around a pump?
Yes. Pump installations are a common use for unions because they allow the pump to be removed without cutting the surrounding rigid pipework.
Can I reuse the union after disconnecting it?
Yes. Provided the union and its sealing components remain clean and undamaged, the central connection is designed to be disconnected and reassembled while the socket ends stay bonded to the pipe.
What should I check before restarting the system?
Confirm that the union is correctly assembled, the seal is clean and properly seated, all solvent-weld joints have fully cured and the pipework is adequately supported. Check carefully for leaks when the system is restarted.
PVC Socket Union 40mm x 40mm - Solvent Weld Irrigation Pipe Fitting
Please sign in to see pricing
643
£6.43
Unit price perBack in Stock
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This 40mm x 40mm PVC Socket Union is a detachable solvent-weld pipe fitting designed to connect two sections of 40mm metric PVC pipe while allowing the pipework to be separated later for servicing, cleaning or system modification.
Unlike a conventional straight socket, the central union can be unscrewed to separate the two sides without cutting the surrounding pipework. This makes it particularly useful around pumps, filters, valves and other components that may need to be removed periodically.
Both ends accept 40mm metric PVC pipe and are designed to be permanently bonded using suitable PVC solvent cement. Once installed, the central union provides a convenient removable connection point within an otherwise permanent pipe system.
A practical choice for professional irrigation, nursery water systems, agriculture, aquaculture and other rigid PVC installations where reliable water distribution and future maintenance access are important.
Why use a 40mm PVC Socket Union?
- Detachable connection - allows sections of pipework to be separated without cutting the pipe.
- 40mm x 40mm configuration - designed for equal-size 40mm metric PVC pipework.
- Solvent-weld sockets - creates permanent connections between the union ends and compatible pipe.
- Removable centre section - ideal for components that require periodic maintenance or replacement.
- Rigid PVC construction - lightweight, durable and resistant to corrosion.
- Useful around pumps and filters - makes equipment removal significantly easier.
- Reusable union connection - disconnect and reassemble the central joint while leaving the surrounding pipework in place.
- Professional irrigation fitting - suitable for commercial horticulture, agriculture and water-management installations.
Permanent pipework with a removable connection
A PVC union provides the reliability of solvent-weld pipework while creating a deliberate point at which the system can later be separated.
The two outer sockets are solvent welded permanently to the 40mm pipe. The central threaded union nut then secures the two halves of the fitting together around the union seal.
When maintenance is required, the water system can be isolated and the union disconnected. The equipment or relevant section of pipework can then be removed without disturbing the permanent solvent-weld joints.
Ideal for irrigation & water-management systems
Socket unions can be incorporated throughout rigid PVC pipe networks, but they are especially valuable next to equipment that is likely to need servicing during the life of the installation.
- Commercial irrigation systems
- Nursery and glasshouse water distribution
- Pump installations
- Filtration systems
- Valve assemblies
- Fertigation systems
- Water-storage and transfer systems
- Aquaculture and aquaponic installations
- Ponds and water features
- General 40mm metric PVC pipework
Make pumps, filters & valves easier to service
Planning service points into an irrigation system during installation can save considerable time later.
A pump or filter installed entirely between permanent solvent-weld joints may require pipework to be cut when the component eventually needs removing. Installing unions at suitable points creates intentional breaks in the system instead.
Once safely isolated and depressurised, the union can be opened and the component removed. After servicing or replacement, the union can simply be reassembled.
Installing a 40mm PVC Socket Union
- Plan the position of the union before permanently assembling the pipe system.
- Cut the 40mm PVC pipe squarely and remove burrs from the cut edges.
- Ensure the pipe and socket surfaces are clean, dry and correctly prepared.
- Dry-fit the components first to confirm alignment and orientation.
- Use suitable PVC cleaner and solvent cement according to the manufacturer's instructions.
- Insert the pipe fully into each socket and allow the solvent-weld joints to cure correctly.
- Keep the union sealing surfaces clean and correctly seated during assembly.
- Tighten the union securely without applying unnecessary excessive force.
- Allow the solvent-weld joints to cure for the specified period before operating the system.
- Check the completed installation carefully for leaks when commissioning the pipework.
40mm metric PVC pipe compatibility
This fitting is intended for a 40mm metric PVC pipe system. Compatible pipe with a 40mm outside diameter inserts into the plain sockets before being solvent welded into position.
Metric pressure pipe and fittings should not be assumed to fit similarly named imperial pipe or standard UK waste pipe. Always check the actual pipe system and outside diameter before installation.
For a reliable joint, use PVC preparation products and solvent cement suitable for the specific pipe and fittings being installed.
Where should a PVC union be positioned?
For serviceable equipment, unions are normally most useful when positioned so the component can be removed without dismantling the rest of the installation.
For example, installing appropriate unions either side of a pump or filter can allow the complete component to be removed after the water supply has been safely isolated. This is particularly valuable in professional irrigation systems where downtime needs to be kept to a minimum.
40mm PVC Socket Union product details
| Product type | PVC socket union |
|---|---|
| Size | 40mm x 40mm |
| Pipe system | Metric PVC |
| Connection | Plain socket x plain socket |
| Jointing method | Solvent weld / solvent cement |
| Compatible pipe size | 40mm outside diameter metric PVC pipe |
| Material | PVC |
| Union type | Detachable central screw union |
| Primary application | Irrigation and water-management pipework |
| Suitable for | Irrigation, pumps, filters, valves, water distribution, aquaculture and compatible rigid PVC systems |
40mm PVC Socket Union FAQs
What is a 40mm PVC union used for?
It connects two sections of compatible 40mm PVC pipe while creating a removable joint that can be opened later for maintenance or equipment replacement.
Does this union fit 40mm PVC pipe?
Yes. The plain sockets are designed for compatible metric PVC pipe with a 40mm outside diameter.
Are both ends solvent weld?
Yes. Both plain socket ends are designed to be bonded to compatible 40mm PVC pipe using suitable solvent cement.
Can I disconnect it after the pipe has been glued?
Yes. The outer socket joints remain permanently bonded to the pipe, while the central union can be unscrewed to separate the two sides.
Where is a union most useful in an irrigation system?
They are particularly useful next to pumps, filters, valves and other components that may need to be removed periodically for servicing or replacement.
What is the difference between a socket union and a straight socket?
A conventional straight socket permanently joins two pipes. A union performs the same basic connection function but adds a detachable centre, allowing the pipework to be separated later.
Is the 40mm measurement the pipe outside diameter?
Yes. Metric PVC pipe systems are commonly specified by the pipe's outside diameter, so compatible 40mm pipe has a nominal outside diameter of 40mm.
Will standard UK 40mm waste pipe fit?
Do not assume so. Metric PVC pressure systems and standard waste-pipe systems can use different dimensions and fitting standards. Confirm the pipe type and actual dimensions before installation.
Do I glue the threaded centre of the union?
No. The plain sockets are solvent welded to the pipe, while the central union must remain detachable so it can be opened for maintenance.
Can this fitting be used around a pump?
Yes. Pump installations are a common use for unions because they allow the pump to be removed without cutting the surrounding rigid pipework.
Can I reuse the union after disconnecting it?
Yes. Provided the union and its sealing components remain clean and undamaged, the central connection is designed to be disconnected and reassembled while the socket ends stay bonded to the pipe.
What should I check before restarting the system?
Confirm that the union is correctly assembled, the seal is clean and properly seated, all solvent-weld joints have fully cured and the pipework is adequately supported. Check carefully for leaks when the system is restarted.
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643
£6.43
Unit price per