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Features

  • 6.5 Peak HP Motor – Powerful suction picks up about 1 gallon of water per second
  • Scroll Noise Reduction® is a patented feature that provides quiet operation by precisely controlling the flow of air through the vac
  • Sturdy Cart, Push Handle, & Large Rear Wheels act together allowing the vac to travel easily up & down steps and across rough terrain
  • Quick Release Accessory Storage Bag keeps accessories close at hand but is quickly removable to make emptying debris from drum quick and easy
  • 2-Piece Drum Provides improved, more rugged construction to meet the higher demands found on the job site
  • 3-layer Fine Dust Filter captures fine dust particles such as dry wall dust
  • 7' Dual-Flex® Locking Hose resists collapsing and adds 180˚ flexibility at both hose ends. Hose locks onto vac for uninterrupted cleaning
  • Large Carry Handle allows easy lifting of vac into service vehicle
  • Long 20’ Cord wraps neatly around carry handle
  • Powerful exhaust airstream can be directed through the vac hose to blow debris from garages, decks, and sidewalks

Specifications

Drum Size 16 Gallons (US)
Cord Length 20’
U.L. Listed Yes
Replacement Filters VF3502, VF5000, VF6000, VF7000
Accessory Size 2-1/2"
Shipping Weight 32.8 lbs.
Net Weight 28.2 lbs.

Motor

Peak HP 6.5
Air Watts 306
Voltage 120
CFM 203
Amps 12.0

Support Documents

Ordering Information

{{model}}
Catalog Number Model No. Description Weight
lb. kg
31693 WD1851  16 Gallon Contractor Wet/Dry Vac  32.8  14.90 
  • 72952 - Fine Dust Filter - Blue
  • 72932 - Crevice Tool
  • 72937 - Blower/Car Nozzle
  • 72902 - Extension Wands
  • 72907 - Utility Nozzle
  • 72912 - Wet Nozzle
  • 72897 - 2 1/2 x 7 Universal Vac Hose
  • 72927 - Muffle/Diffuser
16 Gallon Wet/Dry Vac With Cart is rated 4.9 out of 5 by 205.
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Rated 5 out of 5 by from Very good product K zI like this tool,very good working,recommended for any body.
Date published: 2016-12-04
Rated 5 out of 5 by from Great vac This is a fabulous vac so far. The suction on it is incredible. Does a great job on the router table, miter saw, and general vacuuming sawdust off the shop floor. For me, the larger diameter hose is a must, and the nice long cord.
Date published: 2016-12-04
Rated 5 out of 5 by from Nice vacuum Really nice shop vac. Really sucks and follows by pulling on the hose. Good cord length and not too noisy. Easy assembly with tool storage.
Date published: 2016-12-04
Rated 5 out of 5 by from Super powerful and heavy-duty built! Probably the strongest shop-vac I've ever used! Picks up anything up to 2" easily depending on weight.
Date published: 2016-12-03
Rated 5 out of 5 by from This tool has all the right features where it matters. I have been doing research on dust collection for my modest workshop (12 x 30) and decided to go with shop vac over " dust collection" blower primarily because l think that the static lift they have vs blowers overall cfm's is more valuable in my shop setting. A few weeks ago I found a shop vac comparison video on "You Tube" where it had This Rigid vac competing with 5 other brands. The test that convinced me was the one where he dumps 15 lbs of sawdust on the floor and timed how long it took each one to suck it up, the Rigid did it It in just a tick over 20 seconds "seriously" the closest other time was a respectable 24 sec. This thing has serious power". And the over the top bonus is, that it is also the quietest one of the bunch at 81decibles. When I turned it on for the first time I knew it would suck, but I always tense up a little when tuning on loud machines, when I did I just stood there for a second and thought "is that all" "really" that patented airstream and baffle on it is, "well" awesome!. In my IMHO if you are thinking about getting a shop vac, for any reason, get this one, these Rigid people play for keeps on their stuff, and that's coming from a DeWalt Die Hard!, Oh, did I mention that I would recommend this to a friend!!
Date published: 2016-12-02
Rated 5 out of 5 by from It's Quieter than Anything Else! I bought this vac to replace a perfectly good 15-year-old Ridgid 8-gallon, 3.25 HP vac. Why? Although it works well, the old machine is loud! Because I have starting using it in the workshop to collect sawdust from woodworking power tools the noise -- even with hearing protection -- is excessive at 82 dBA @ 1 meter! That's as loud as a diesel truck passing close by at 50 mph. So, how does the new vac stack up? It's 20 dBA quieter. That's the typical noise level in a large business office. Nice! And, it's even better with hearing protection. Of course this vac does everything else it's supposed to do. The wheel-around cart design is more convenient on this R2-D2-sized machine than I thought it would be. Plus, the bag on the cart handle holds all of the accessory attachments, the extra length power cord and a Dust Right® Universal Small Port Hose Kit. The bottom line is I'm extremely happy.
Date published: 2016-12-01
Rated 4 out of 5 by from Could be great with one change. This product is very good. Easy to assemble, great suction and the cart runs smooth. My only complaint is that the hose is to stiff. A more flexible hose would make it a 5-star shop vac.
Date published: 2016-12-01
Rated 4 out of 5 by from A most useful product to have in a barn. I am a woman who bought your product to clean my barn. Although it is lightweight, the current size is cumbersome to move about, especially in small areas like stalls. Can you design one that is taller instead of being so squat? A move flexible hose would be easier for a woman to use, FYI: My husband also owns a Ridgid Vac, but I wanted my own!
Date published: 2016-12-01
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3 Questions | 11 Answers

Product Q&A

 
 
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2 years, 2 months ago
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Salt Lake City, UT, USA
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Answer: 
203 cfm
2 years ago
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New York, United States
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Answer: 
1/203
1 year, 11 months ago
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Madera, CA, USA
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Answer: 
20 pounds, maybe more. CFM 160
1 year, 9 months ago
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Worthington Springs, FL, USA
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Answer: 
Thank you for your interest in RIDGID!

The water lift of WD1851 is 47 inches while the suction power is 199 CFM.

If you have any further questions or concerns, feel free to call us at 1-800-4-RIDGID (1-800-474-3443) or you may send your email to [email protected]

Regards,
RIDGID
2 years, 2 months ago
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Answer: 
200+ CFM and it will move 1 gallon of water a minute, this I have done myself
1 year, 11 months ago
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Hulett, WY 82720, USA
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Answer: 
CFM 203
2 years ago
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Michigan, USA
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3 answers

Pressure

If a airwatts are 0.117354 * (CFM) * (inches water), then do I calculate correctly that this model no. WD1851 will lift water 12.8 inches high?

306 watts * (1/0.117354) * (1/203 CFM) = 12.8 inches of water

I feel like that number is way too low - I'm sure your product lifts water more than 1 foot high! I may have the calculation wrong or the pressure may be specified another way. What do the units of "G/h" mean?

Besides, it seems like an odd coincidence that this is almost exactly the inches for model WD4070 when the WD4070 is rated 5.0 peak HP and the model on this page is rated 6.5 peak HP.

Thank you for the help.
2 years, 11 months ago
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Indiana, USA
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Answer: 
You are right it would lift water more like 10 ft.
1 year, 9 months ago
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Langton, ON N0E, Canada
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Answer: 
According to our Product Manager, You need to first think of CFM and Inches of water lift in inches as two different and inversely related measurements. To maximize CFM, you need a wide open path with as little resistance as possible to move as much air as possible. To maximize inches of lift (or better recognize or measure) that flow of air needs to be restricted, or blocked. So to assume that our machines generate 203 CFM and 49 inches of lift at the same time is a miss-conception. The calculation you completed was “at 306 air watts and 203 CFM, what are the inches of lift being produced”… and the answer is 12.8. Essentially, you’ve identified the inches of lift at the rated max CFM and Air Watts. For example, if you solved for CFM at max inches (say 49) you get a really small CFM number, somewhere below .2 CFM. This is because at max inches (the hose is blocked) and there is “no” air moving through the hose.

We hope this helps. Have a good week ahead!

Thank you
RIDGID
2 years, 11 months ago
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Answer: 
Thank you, RIDGID! That really helped me understand how the pressure and CFM are related, and the calculation result of 12.8 inches makes sense now. I didn't realize the airwatts equation was NOT referring to "sealed" inches of water. Now I see why using sealed inches for calculating airwatts wouldn't make any sense.

You mentioned 49 inches a couple times. Is that the sealed lift this vacuum is rated for? If not, would you please share the max water lift rating?

Thank you again.
2 years, 11 months ago
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Indiana, USA
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1 year, 7 months ago
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Answer: 
I've got 16 Gallon Model # 1851 and it takes Vac Bag VF3502

I think they are usable on both models, but you'd still need to double check. Maybe Home Depots site or just call or email Rigid.
1 year, 3 months ago
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Richford, VT, USA
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Answer: 
Thank you for your interest in RIDGID!

Please confirm the exact model of your vac. The WD16650 model is not designed to hold a filter bag. But the product above is the model number WD1851 which is designed to accommodate a filter bag. If your vac is WD1851, the part number of the filter bag is VF3502.

If you have any further questions or concerns, feel free to call us at 1-800-4-RIDGID (1-800- 474-3443) or you may send your email to [email protected]

Regards,
RIDGID
1 year, 7 months ago
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