Sub Zero Covers
Small green insulated backflow cover seated on river-rock landscaping beside a road, carrying the Sub Zero Covers product tag.
Small assembly cover on a landscaped median

Model fitment

Watts 009M2QT backflow cover

Watts 009M2QT backflow cover: The 009 series is the big Watts RP — taller bonnet, more mass, and no room for a cover sized for a 007. This pattern matches the 009M2QT dimensions field techs actually see.

When the tag says 009, the 007 cover is not "close enough." The Watts 009M2QT reduced pressure zone assembly is taller and bulkier than the 007 family. Installers who try to force a smaller cover compress insulation around the relief bonnet — and that is when freeze damage shows up on the test report in spring.

We built the 009M2QT cover as a dedicated pattern, not an oversized generic.

Assembly profile

The 009M2QT shows up on larger commercial irrigation stations, high-flow domestic entries, and jobs where the engineer spec'd a bigger RP because the 007 was marginal on CV requirements. You see them pad-mounted, post-mounted, and occasionally horizontal on custom racks.

Our cover accounts for:

  • Increased relief bonnet height versus 007-series assemblies
  • Test cock placement on the larger body casting
  • Valve handle clearance at shutoffs
  • Insulation depth that maintains R-value without binding moving parts

Pair with the 007 SKU

Smart distributors stock both the 007M1QT and 009M2QT covers. Counter staff should ask "007 or 009?" when the customer only says "Watts RP." That one question eliminates most fit returns.

For the full Watts line, see Watts covers. For assembly-type context, see RP covers.

When to spec custom instead

Retrofits sometimes replace a 009 with a different brand's large RP — same pipe centerline, different dimensions. If the tag is missing or the assembly was rebuilt, send measurements. We fabricate custom covers in 3–5 business days.

Legacy 909 installs are a third distinct pattern — do not assume cross-fit between 007, 009, and 909 families.

Distributor access

Available through authorized distributors via our distributor program. Fire protection and irrigation supply accounts with large RP exposure should keep this SKU in the second position behind the 007 mover.

When customers say "just give me the bigger one"

Counter staff hear it every season. On Watts RPs, bigger is not a universal size — it is a 009 versus 007 decision. Document the model on the invoice so returns do not become a debate in spring. Good distributors train seasonal help on that distinction before the first freeze email blast.

Height comparison at a glance

If you can see the assembly in person, the 009 bonnet typically stands noticeably taller than a 007 on the same pad. When photos are all you have, compare relief stack height against known 007 jobs on the same account — property managers often have multiples.

Published dimensions

Watts 009 / LF009 envelope, by size

Reduced pressure zone (RP / RPZ). Dimensions in inches from the manufacturer's spec sheet with standard shutoffs. Length is end to end; heights are measured from the pipe centerline up to the highest point and down to the relief valve or body. The stock cover column is the price-list mapping for that pipe size, ordered closest fit first.

SizeLengthAbove CLBelow CLStock cover
¾"10.75"3.5"2.75"20 × 20 (DS2020), 24 × 24 (DS2424)
1"14.5"3"3.25"20 × 20 (DS2020), 24 × 24 (DS2424)
1¼"17.375"3.5"3.25"30 × 24 (DS3024), 36 × 24 (DS3624), 42 × 24 (DS4224)
1½"17.875"3.5"3.25"30 × 24 (DS3024), 36 × 24 (DS3624), 42 × 24 (DS4224)
2"21.375"4.5"4.25"30 × 24 (DS3024), 36 × 24 (DS3624), 42 × 24 (DS4224)

Confirm the fit against the assembly in front of you: unions, strainers, and OS&Y gates add length and height beyond the standard sheet. Cover finder · How to measure

Common questions

Can I use a 007 cover on a 009M2QT?
No. The 009 is a larger assembly. Forcing a 007 cover leaves the relief bonnet exposed or compresses insulation where it should not be.
How does 009M2QT differ from 007M1QT on the cover?
The 009 pattern is taller with a wider profile through the bonnet section. They are separate SKUs with separate patterns — not small/medium/large variants of one bag.
Does this cover fit Watts 957 or other large RPs?
Check the specific model tag. Some large Watts RPs share similar profiles; others differ. When in doubt, confirm against our Watts brand page or send the model number.
Is this SKU stocked year-round?
We maintain inventory on top movers including the 009M2QT. Peak season may have lead time communication — your portal shows current availability.