Products
Insulated backflow covers for every backflow preventer.
Heavy-duty, American-made covers for DC, DCDA, RP, RPDA and PVB assemblies — stock sizes from 1/2" through 10"+, pre-fit to Watts, Febco, Zurn Wilkins, Ames, Apollo / Conbraco, and Deringer backflow preventers. Need a non-standard size? We fabricate custom backflow covers in our U.S. facility in 3–5 business days.
Stock sizes
Fifteen stock covers, ¾" through 10".
Pick by the assembly's pipe size, then confirm the fit against the make and model on the tag. Anything outside this chart, or any install tight to a wall or riser, we build custom in 3–5 business days.
20 × 20 · DS2020
24 × 24 · DS2424
30 × 24 · DS3024
36 × 24 · DS3624
42 × 24 · DS4224
Closed top, closed sides
Slips over the assembly and closes at the base. The everyday cover for ¾" to 2" RP, DC, and PVB assemblies on irrigation and small commercial service.
| Pipe size | Cover (in) | SKU |
|---|---|---|
| ¾" – 1" | 20 × 20 | DS2020 |
| ¾" – 1" | 24 × 24 | DS2424 |
| 1" – 2" | 30 × 24 | DS3024 |
| 1" – 2" | 36 × 24 | DS3624 |
| 1" – 2" | 42 × 24 | DS4224 |
Open top with Velcro and grommets
Wraps around larger assemblies where the riser or shutoffs run through the top. Velcro closure and brass grommets for a cable lock. Built for 3" to 10" RP, DCDA, and RPDA installs.
| Pipe size | Cover (in) | SKU |
|---|---|---|
| 3" | 70 × 40 | DS7040 |
| 4" | 85 × 40 | DS8540 |
| 6" | 100 × 50 | DS10050 |
| 8" | 120 × 50 | DS12050 |
| 10" | 130 × 55 | DS13055 |
N-shape covers
Follows the profile of a tall N-pattern installation so the insulation stays against the body instead of tenting over it. Sized by valve size; 10" is built to the assembly.
| Pipe size | Cover (in) | SKU |
|---|---|---|
| 3" | Built to valve | NS3 |
| 4" | Built to valve | NS4 |
| 6" | Built to valve | NS6 |
| 8" | Built to valve | NS8 |
| 10" | Quoted per assembly | NS10 |
What every cover is made of
- Base fabric
- 1,000 × 1,300 denier polyester, 18.5 oz
- Standard insulation
- R-13, 4" thick
- Extreme-weather insulation
- R-30, 8.25" thick
- Cold-crack resistance
- −40°F
- Hydrostatic resistance
- 600 PSI
- UV and mildew
- Pass
- Tear / tensile strength
- 100 lb tear, 375 lb tensile (warp and fill)
- Hardware
- #4 ½" brass grommets, poly-nylon thread
- Built in
- USA, in-house cut and sew
These are insulated covers, not heated enclosures. They are not listed to ASSE 1060. Where a utility or specification calls for a Class I heated enclosure, talk to sales before quoting so the customer gets the right product the first time.
Ordering
Sub Zero Covers sells through distributors only. Distributor accounts see pricing and live availability in the portal; end users order from their local plumbing, irrigation, or waterworks supply house.
Compatible with every major backflow brand
Insulated covers sized for the backflow preventers you install.
- Watts
- Febco
- Zurn Wilkins
- Ames
- Apollo / Conbraco
- Deringer
