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Curb Boxes.
For utilities, contractors and distributors who need curb boxes that match the local standard.
✓ Screw-type and slip-type ✓ Light castings price sheets
✓ Lids, rods and extensions
What to send your regional team
- The standard detail or drawing
- The lid marking and the closure
- Screw-type or slip-type
- The quantity and the job location
Made to the local standard.
A curb box, which SIGMA's price sheets call a service box, gives access to the curb stop on a water service line. Curb boxes follow the local standard, so SIGMA lists them on regional light castings sheets and one national list.
The sheets list screw-type and slip-type service boxes with their tops and bottom sections, plus Arch and Minneapolis pattern boxes and roadway boxes. Lids cast WATER or SEWER, repair lids, extensions, keys and curb box rods in steel and stainless steel are there too.
Two ways to order.
Curb boxes are on the Northeast and Midwest, Southeast and Western light castings sheets and on the national light castings list. The sheets are all dated March 15, 2024. Not sure which region covers the job? Find your regional team.
Know the item number?
Find it on your region's light castings price sheet or the national list, then order through your waterworks distributor.
Have a spec or a drawing?
Send the standard detail or drawing to your regional team. They match it to a sheet item or quote it as a custom casting.
| Region | Regional team | Light castings price sheet |
|---|---|---|
|
Northeast |
Cream Ridge, NJ |
|
|
Midwest |
Sauk Village, IL |
|
|
Southeast |
Alexander City, AL |
|
|
Southwest |
Houston, TX |
See the national light castings list below. |
|
Western |
Ontario, CA · Auburn, WA |
|
|
All regions |
Every casting carries its heat number.
The heat number traces a casting to the foundry, the date and the production batch. SIGMA has inspection procedures for each castings product line, at the foundry and again at SIGMA.
5 quality steps
Inspection procedures for each castings product line, SIGMA engineers or inspectors at the foundries, material test reports, incoming inspection at SIGMA and statistical process control.
ASTM and AASHTO
Standards SIGMA works to, with federal and state department specifications, Canada's BNQ standard and the customer's own requirements.
PE certification
By an outside professional engineer, on request.
From SIGMA's November 2024 article on municipal castings.
Questions about curb boxes.
Short answers. Your regional team has the rest.
Same product. SIGMA's price sheets list them as service boxes; curb box is the other common name. The sheets also list Arch and Minneapolis pattern boxes.
The one your spec calls for: the marking, such as WATER or SEWER, and the closure, a pentagon bolt or two holes. Repair lids are on the sheets too.
Yes. The sheets list curb box rods in several lengths, in steel and in stainless steel with cotter pins.
Both adjust to the depth of the curb stop. On a screw-type box the top section threads onto the bottom section; on a slip-type box the top slides over it. Use the type your spec calls for.
Yes, as a custom order made to your specification. Send the drawing or standard detail for the curb box or lid to your regional team. A new casting goes through a drawing, a sample and an approval step before production.
SIGMA sells through waterworks distributors, so your price comes from your distributor. Ask your distributor or your regional team about pricing.
Have the spec in hand?
Your regional team can match it to the right curb box.
Headquarters, Cream Ridge, NJ