Weld-On 790 PVC Cement 32oz: Multi-Purpose for PVC & CPVC
By Maintenance Depot Plumbing Team · Last reviewed
Quick answer
Weld-On 790 Multi-Purpose Cement (32oz) bonds both PVC and CPVC, for all classes and schedules of rigid pipe with an interference fit up to 6" diameter, so one can covers mixed systems.

Contractors often work with both PVC and CPVC on the same job. Weld-On 790 Multi-Purpose PVC Cement (32oz) is compatible with both PVC and CPVC, so you can carry one can instead of two.
Specs at a glance
| Spec | Detail |
|---|---|
| Product | Multi-purpose solvent cement |
| Brand / model | Weld-On 790 |
| Size | 32oz |
| For | PVC and CPVC, all classes and schedules |
| Max diameter | Interference fit up to 6" |
Key features
- Compatible with PVC and CPVC piping
- Creates a deep, high-contact fusion between pipe and fitting
- For interference fit up to 6" diameter
- Suitable for all classes and schedules of rigid PVC and CPVC
Why choose a multi-purpose cement?
- Fewer products to carry and stock
- Less risk of using the wrong cement on mixed systems
- Ideal for maintenance teams handling many different repairs
Best practice
- Cut, deburr and clean every joint. Use a cleaner like Weld-On C-65.
- Apply cement to the pipe end, then the socket, then the pipe again for larger sizes.
- Insert with a quarter turn and hold.
- Wipe off excess and allow full cure before pressure testing.
The quart size
The 32oz can suits large projects and professional crews. For smaller jobs, choose the 8oz size.
Safety
Use in well-ventilated areas, keep away from ignition sources and close the can tightly.
Frequently asked questions
Can one cement really do PVC and CPVC?
Yes, Weld-On 790 is formulated for both.
What pipe sizes does it suit?
Interference fit pipe up to 6" in diameter.
Do I need cleaner first?
Yes, clean every joint, for example with Weld-On C-65.
Buy Weld-On 790 Multi-Purpose PVC Cement 32oz at Maintenance Depot