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2” Semi-trash Water Pump

Model #6822

Starting At

$449.00 MSRP
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GENERAC ST20K 2” Semi-Trash Water Pump

Specifically engineered to handle muddy or sandy water, the ST20K is powered by a 208cc Generac engine that pumps up to 158 gallons per minute. So it’s ideal for your toughest applications. With features such as low-oil shut down to protect the engine from damage, it’s both durable and easy to use.

Generac 208cc OHV engine with low-oil shut down

Easy prime custom funnel design for quick and easy priming

Folding handle for easy transportation

Large 3 gallon steel fuel tank with incorporated fuel gauge provides up to 5 hours runtime

Durable 1” frame to withstand the harsh environment

All inclusive kit includes 12 foot suction hose, 25 foot discharge hose, and strainer

Color-coded suction and discharge ports to ensure the correct hose connections

Powerful pump can easily pump up to 158 gallons per minute

Durable silicon carbide mechanical seal provides protection from abrasive materials

Onboard instructions with icons of key touch points make this pump easy to use

GENERAC<strong> ST20K 2” Semi-Trash Water Pump</strong>
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Rated 5 out of 5 by from Cheap connectors The hoses and connectors are junk. Threw them out. Do yourself a favor and but new quality lines and add GatorLock® banjo couplers to pump and hoses. no more leaks. easy connect/disconnect. Love the unit now... I like the unit and it works great. It would have been 5 stars if the had not gone with such low quality hoses and connectors.
Date published: 2021-06-12
Rated 4 out of 5 by from Performance -- The good and the bad First of all: I use the pump to pump water out of a pond and then through a sprinkler system. I use Mobil 1, recreational gas, it is always covered when not in use or stored inside and never gets wet. I bought the pump in April 2020. The Good: The pump actually works very good. Initially, it was lacking a bit as it always wasn't pumping. I then discovered an air leak in the intake side. Once that was fixed, it worked very good. My yard never looked better. It was watered in record time. The pump always started and never gave me a bit of trouble. The bad: I got the pump from storage (May 2021) and went to start the pump and the starter recoil system broke on the first pull. I removed the recoil starter and discovered it was not repairable. I called Generac and ordered a new one. It was not under warranty as this part is determined to be a "wear item" and is not warrantable. Really!!! My guess is that based upon the design, it would be a high warranty cost if it was covered. This is obviously disappointing. So $50 later, I have a new starter recoil system on the way. Oh, and I have to wait 10 to 14 days.
Date published: 2021-05-05
Rated 4 out of 5 by from One minor flaw Bought it a few months ago, got around to trying it today to drain my daughter's above ground pool. When installing the supplied output hose together with the supplied fitting to attach it to the pump's output fitting I was a little disappointed in how small the nipple was in comparison to the hose. When I tightened the hose clamp down on it the hose puckered because of the loose fit. That caused the hose to leak significantly through the puckers. I had to buy a fitting for the other end of the hose (that would connect to more hoses) and the aftermarket nipple was quite a snug fit. Fixing the leaky connection wasn't a hard fix, I just took the assembly apart and wrapped the nipple with enough duct tape to make a snug fit that didn't leak. I just feel this is an issue that Generac should have fixed before putting the pump on the market. The pump was fairly easy to start, ran smoothly and reasonably quiet, and it emptied a 7000 gallon pool in 45 minutes under ideal conditions, i.e. 25' of open ended hose on flat ground.
Date published: 2020-09-26
Rated 5 out of 5 by from This pump works great and does the job consistently. Our Church brought this pump about 5 yrs ago and it is a work horse.
Date published: 2020-09-24
Rated 1 out of 5 by from Generac semi-trash pump lacking in quality The name Generac should be equated to quality, but in this case it is not! This made in China semi trash pump is measurably low in quality. The motor is sub-standard and no-name and tends to use oil, the fuel tank gauge quit working after the first year, and the chain holding the prime pump fill cap rotted out in the first month of service. The purchase price of the Generac is not that much lower than some other name brands which are of much higher quality. Generac really missed the mark on this product, hopefully they have not done the same on their other products.
Date published: 2020-06-22
Rated 5 out of 5 by from First Impression -- Works Very Well We use the pump with 20 feet of pickup hose and 100 feet of output hose to run a sprinkler for the yard. We pull water from the pond to the sprinkler. Just set it up. Always starts on first pull. Initial impression: works as advertised. This summer will tell for long term use. Did not use any of the hose equipment that came with the pump.
Date published: 2020-04-25
Rated 4 out of 5 by from This pump holds up to hard weather conditions I do gold prospecting this pump is used for 6 months at a time it was left on a claim for 3 years only covered by a tarp no fuel conditioner. it would start on 1 to 2 pulls after sitting for 6months. Only problem I have found is finding a parts list and where to order from. I really like this pump it pumps very well......
Date published: 2019-09-21
Rated 5 out of 5 by from Always performs well We have had this pump for a little over 2 years now and it has never failed to operate as advertised. The pump supplies the irrigation system on our farm and supplies more than enough volume and pressure even when used to supply a 350ft hose length. An excellent piece of equipment. I'd post some pictures of it in action but they are more than the 5mb cap
Date published: 2019-07-09
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ST20K-6822 is rated 4.1 out of 5 by 13.
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