3"-4" PVC General Purpose Drain (15322) Guide
By Maintenance Depot Plumbing Team · Last reviewed
Quick answer
The 15322 general purpose drain is a PVC floor drain with a stainless steel grid that fits over 3" or inside 4" Schedule 40 PVC. Use it in utility rooms, garages and outdoor wash areas.
A well-placed floor drain protects floors, walls and stored goods from water damage. The 3"-4" PVC general purpose drain (15322) is a versatile choice for PVC drain systems.
Specs at a glance
| Spec | Detail |
|---|---|
| Product | General purpose floor drain |
| Material | PVC body, stainless steel grid |
| Model | 15322 |
| Fits | Over 3" Sch 40 or inside 4" Sch 40 |
| Uses | Laundries, pump rooms, patios |
Key features
- PVC body for PVC drain lines
- Fits over 3" Schedule 40 or inside 4" Schedule 40 pipe
- Stainless steel grid for strength and corrosion resistance
Ideal locations
- Laundry rooms and utility closets
- Garages, workshops and car-wash bays
- Water heater and pump rooms
- Covered patios and outdoor wash areas
How to install
- Run the drain pipe to the drain location and confirm which fit you're using: over 3" or inside 4".
- Clean, prime and cement the drain body to the pipe with PVC cement.
- Set the grid just below the finished floor surface.
- Slope the floor toward the drain, about 1/8" to 1/4" per foot.
- Make sure a trap is installed below the drain to block sewer gas.
Keep it flowing
- Clear leaves, lint and grit from the grid often.
- Pour water into seldom-used drains to keep the trap full.
- Avoid washing cement, grout or paint residue down the drain.
Working with ABS pipe instead? Choose the 3"-4" ABS general purpose drain (15324).
Frequently asked questions
What floor slope should I use toward a drain?
Around 1/8" to 1/4" per foot keeps water moving to the drain without feeling uneven.
Will a PVC drain rust?
No. The PVC body will not rust, and the grid is stainless steel.
Can cement or grout go down the drain?
Avoid it. Cement and grout residue can harden in the trap and cause blockages.
Buy 3"-4" PVC General Purpose Drain 15322 at Maintenance Depot