Q: Can grey PVC be used for irrigation?
A: Yes, but make sure it’s pressure-rated. Grey PVC is often Schedule 80, which has thicker walls and higher pressure capacity than white Schedule 40. It’s safe for irrigation if it’s marked as “pressure-rated PVC.” Avoid using grey electrical conduit, as it’s not made for water systems.
Q: Can grey PVC be glued to white PVC?
A: Yes, they can be joined using the right cement. Use a heavy-bodied PVC cement rated for both Schedule 40 and Schedule 80 pipe. Apply purple primer (if required) and ensure surfaces are clean and dry before gluing. This bond is permanent, so check alignment before joining.
Q: My Rain Bird 100DAS valves are leaking. Should I replace them?
A: Not always. Leaks often come from worn diaphragms or debris in the valve body. You can repair them using a Rain Bird repair kit. If the valves are cracked or more than 10 years old, replacement may be the better choice.
Q: What replacement valve brands are reliable?
A: Rain Bird is still solid, but other trusted brands include:
- Hunter – known for durability and easy servicing
- Irritrol – affordable and widely available
- Toro – user-friendly jar-top models for quick maintenance
Stick with valves that match your pipe size and pressure rating. Consistency makes repairs easier later.
Q: Does grey PVC look better?
A: Many homeowners prefer grey because it blends with rock and mulch beds. It’s also more UV-resistant than white PVC, so it weathers better outdoors. Just remember: function comes before looks—ensure it’s pressure-rated and installed properly.
For more tips on irrigation systems, check out the Family Handyman guide to fixing sprinkler valves.
I’m Chris Mayer, writing for Plumbing 101.
