NDS Qwik-Turn 864 radius couplings let you build curved channel drains around patios, pools, spas and fountains with the 5 in. Pro Series system. Each coupling snaps between straight channels with tongue-and-groove ends, stays locked vertically, and rotates up to 6 degrees horizontally. Link several couplings for a tighter curve.
Radius Coupling Specifications
| Fits | NDS 864 Pro Series 5 in. channel drains |
|---|---|
| Rotation | Up to 6 degrees horizontally per coupling |
| Size | 5 in. wide x 4-3/4 in. deep |
| Weight | 0.3 lb each |
| Connection | Tongue-and-groove, snaps into channels or other couplings |
| Pack | 9 couplings |
Specifications: NDS Pro Series Channel Drains (manufacturer product page and technical documents), checked September 2026.
Unlike polymer concrete, the plastic couplings will not crack or break.
Works With
Video: NDS, "Introducing the NDS 5 in. Pro Series Channel Drain."
Shipping
Orders over $2,000 ship free by common carrier. Most orders ship within 4 business days and arrive in 3 to 6 business days.
Price & Cost
A 9-pack is $64.15, about $7.13 per coupling. Shipping is $11.99 per 9-pack, and orders over $2,000 ship free, so couplings added to a larger channel drain order ship free.
Downloads & Resources
- Qwik-Turn radius coupling PSRC-864 technical specification (NDS, PDF)
- Bottom outlet on PSRC-864 installation detail (NDS, PDF)
- Pro Series channel drain installation manual (NDS, PDF)
- NDS PSRC-864 product specifications
- NDS channel drain catalog (PDF)
Frequently Asked Questions
How tight a curve can radius couplings make?
Each coupling rotates up to 6 degrees horizontally and stays locked vertically. NDS says the coupling allows bends as small as a 30 in. radius. Connect couplings to each other for tighter curves.
Can I make a 90 or 45 degree turn?
For sharp corners, NDS makes separate 5 in. Deep Profile 90 degree (#861) and 45 degree (#862) elbows. Radius couplings are for gradual curves.
Do radius couplings work with other channel drains?
They are made for the NDS 864 Pro Series 5 in. channel system.
Can I cut NDS Pro Series channel drains?
Yes. Each 1 meter section can be cut down to lengths as short as 4 in.
How do Pro Series channels connect to pipe?
Side and bottom outlets can go anywhere along the run and connect to sewer and drain pipe or SCH 40 pipe and fittings.