Ultra-Dewatering Bags®

Reusable Models

Reusable dewatering bag for large jobs and big savings

The convenience of disposable/one-use bags can make dewatering operations nice and easy.  Or at least as nice and easy as dewatering gets.  But for large jobs or those on a tight budget, a reusable dewatering bag may be the better solution.  

The reusable model Ultra-Dewatering Bag uses a heavy-duty geotextile material that is built to last and withstand multiple uses.  Steel locking rods keep the bag securely closed during dewatering but are quickly removed after operations are complete so collected silt, sediment, dirt, and debris can be easily disposed of and the next round of dewatering can begin.

Key Features:
  • Use for dewatering operations with large quantities of silt, sediment, or dirt. Bags can be emptied and reused repeatedly.
  • Large opening (3' or 5' depending on the size of Dewatering Bag) allows easy access and removal of trapped sediment.
  • Works with discharge hoses up to 6".
  • Galvanized steel Locking Rods (Part# 9735) are quickly and easily installed to secure bag opening during dewatering.
  • Helps comply with NPDES, 40 CFR 122.26 (1999) and TMDL requirements.


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 WARNING: This product (Locking Rods) can expose you to chemicals including nickel, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

Ultra-Dewatering Bags, Reusable Model

Part # Description Dimensions ft. (mm) Weight lbs. (kg) Where to Buy
9730 Bag with Locking Rods 3 x 5 (915 x 1,524) 19.0 (9.0)
9732 Bag with Locking Rods 5 x 7 (1,524 x 2,134) 21.0 (9.5)
9735 Locking Rods only - 13.0 (6.0)
9736 Replacement Bag 3 x 5 (915 x 1,524) 4.0 (2.0)
9738 Replacement Bag 5 x 7 (1,524 x 2,134) 6.0 (3.0)

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Frequently Asked Questions

Why would I use the Reusable Dewatering Bag instead of the standard bag?
Like many items, there's a cost/convenience factor involved with the use of either of the Ultra-Dewatering Bags. Your initial cost will be significantly higher with the Reusable Model because of the Locking Rods. You will, of course, recover that cost as more dewatering projects are completed and in the long run, your cost per project should be less than if the standard Dewatering Bags were used.

The standard Ultra-Dewatering Bag will need to be replaced once it is full (or at the end of the project), where as the Reusable Model can be opened, emptied and used at the next job site.


Why would I NOT use the Reusable Dewatering Bag instead of the standard bag?
As mentioned in the previous FAQ, the Reusable Dewatering Bag could be considered less convenient because of the added requirement of manually opening the bag and emptying the contents.

Another reason is that the material used for the Reusable Dewatering Bag does not absorb oil, grease, and hydrocarbons like the material used for the standard Ultra-Dewatering Bag.


Are the Locking Rods required?
Yes, the Locking Rods must be used in order for the bag to perform properly.  Without the Rods, the Dewatering Bag will be completely open on one end and water that is pumped in will not be treated/filtered.


Can I buy the Locking Rods separately?
Yes, Locking Rods are available as a separate purchase, as are the Dewatering Bags themselves so materials can be replaced as needed without the purchase of additional/unneeded components.