Wash and Decontamination
MTM Hydro PF22.2 vs Adam's Premium Foam Cannon
Twenty dollars apart, and each maker publishes a different half of what you would want to know. One sells the hardware, the other sells the bottle on top of it.
By Sawyer V. · Last verified 2026-09-27
We have not tested any of this. Everything below is compiled from published manufacturer specifications, and the arithmetic is printed so you can check it. This page carries affiliate links: if you buy through one we earn a commission at no extra cost to you, and it does not change the order of the picks. Full disclosure.
| # | Pick | Best for | Score | Price |
|---|---|---|---|---|
| 1 | MTM Hydro PF22.2 Foam Cannon MTM Hydro | The cannon people stop upgrading from | 2.4/10 | $94.49 - view on Amazon |
| 2 | Adam's Premium Foam Cannon Adam's Polishes | The biggest published canister here | 3.1/10 | $76.49 - view on Amazon |
Prices last verified September 27, 2026. They move constantly; the figure on Amazon when you click is the real one.
Side by side
| MTM Hydro PF22.2 | Adam's Premium Foam Cannon | |
|---|---|---|
| Price | $94.99 | $74.99 |
| Body | Italian nickel-plated brass, single cast | Not published |
| Orifice | Italian calibrated | Not published |
| Canister capacity | Not published | 35 oz |
| Fan adjustment | Not published on this listing | Adjustable, vertical or horizontal |
| Fittings | Included | Not published |
| Maximum pressure | Not published | Not published |
| Flow rating | Not published | Not published |
The orifice is the part that makes foam
A foam cannon is a brass body, a bottle and a small calibrated hole. The hole meters how much water mixes with how much soap, and it is the component cheap cannons vary on. MTM publish theirs as an Italian calibrated orifice in a single-cast nickel-plated brass body, which is a hardware specification rather than a claim about suds.
Adam’s do not publish a body material or an orifice specification for theirs. That does not make it a worse cannon; it means the two listings do not let you compare the part that matters most, so the comparison has to move to what each one does publish.
Adam's publishes the bottle
Adam’s publish a 35oz canister, which is the only stated capacity in this group and three ounces up on the usual 32. On a sedan that is a detail. On a pickup or a three-row SUV it is one less stop to unscrew the bottle, mix more soap and start again, which is the difference between a bigger bottle and a better one.
They also publish an adjustable fan angle and the ability to set the spray vertical or horizontal. Turning the fan flat is how you cover a roof and a hood without walking the cannon back and forth, and it is a real convenience feature rather than a specification.
What neither maker will tell you
Neither listing publishes a maximum pressure or a flow rating, and neither publishes a warranty term. Those are the three figures that would let you match a cannon to the pressure washer you own, and their absence is the norm in this category rather than an oversight by one brand.
In practice both connect to a standard pressure washer quick-connect, and MTM state fittings are included. The cannon roundup scores the wider field on exactly these published gaps, and whether a cannon is worth it covers the pre-wash argument first.
Who should buy which
- You want the published hardware: MTM Hydro PF22.2, $94.99, brass body and calibrated orifice.
- You wash a large vehicle: Adam's, $74.99, on the 35oz canister and the flat fan.
- You want to spend less and still foam: Adam's, which is $20 under the MTM.
- You want a pressure or flow rating before buying: neither publishes one.
- You have no pressure washer: neither. Buy a foam gun and read the comparison above.
Every pick, with the working
Each entry lists the specifications the maker publishes, the axis scores those specifications produce, and what you give up. Rows that read “Not published” are not omissions on our side: they are figures the maker will not commit to in writing, and they cost the product points on the transparency axis.
Our pickThe cannon people stop upgrading from
MTM Hydro PF22.2 Foam Cannon
MTM Hydro
$94.99 for an Italian nickel-plated brass body with a calibrated orifice, sold through Adam's alongside their own cannon. It is the most expensive item in this group and the one whose specification sheet reads like plumbing hardware rather than like a car accessory.
- Body
- Italian nickel-plated brass, single cast
- Orifice
- Italian calibrated
- Fittings
- Included
- Maximum pressure
- Not published
- Flow rating
- Not published
- Canister capacity
- Not published
- Warranty
- Not published
What it does well
- Nickel-plated brass single-cast body rather than the usual plated pot metal
- Calibrated orifice, which is the part that decides foam quality and the part cheap cannons vary on
- Fittings included, so it connects to a normal pressure washer out of the box
Who it is not for
- $94.99 is roughly double a competent cannon
- Needs a pressure washer; it will do nothing on a garden hose
- No maximum pressure or flow rating published on this listing
How this score was calculated
- Protection claimdropped
- Nothing in this category is bought on how long it lasts, so the axis is dropped and the other weights are re-normalized.
- Capabilitydropped
- MTM Hydro does not publish a figure for published maximum pressure on this product, so the axis is dropped and the remaining weights are re-normalized.
- Cost per ouncedropped
- This is not a consumable, so cost per ounce says nothing useful and the axis is dropped.
- Price against the ceiling0.0/10, weight 14%
- A listed $94.99 against the $90 one upgrade in this category realistically tops out at. A list price captured on the compile date, not a live price and not what you will pay.
- Written commitmentdropped
- MTM Hydro publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency4.3/10, weight 18%
- 3 of the 7 specifications we went looking for are published by MTM Hydro. Every blank row below is something the maker will not put in writing, and it costs the product points here.
List price $94.99 per Adam's Polishes' own store, captured on the compile date below. Not a live price and not what you will pay — the button is where the real number is.
Specifications from MTM Hydro PF22.2 listing at Adam's Polishes, compiled September 8, 2026.
2The biggest published canister here
Adam's Premium Foam Cannon
Adam's Polishes
$74.99 with an adjustable fan angle, vertical or horizontal spray and a 35oz canister. The canister figure is the one to notice: a bigger bottle is fewer refills across a large vehicle, and it is the only capacity number published in this group.
- Canister capacity
- 35 oz
- Fan angle
- Adjustable
- Spray orientation
- Vertical or horizontal
- Maximum pressure
- Not published
- Flow rating
- Not published
- Body material
- Not published
- Warranty
- Not published
What it does well
- 35oz canister published, which is larger than the usual 32oz and the only stated capacity here
- Fan angle adjustable and the spray can be set vertical or horizontal
- Sits under the MTM on price while publishing more about itself
Who it is not for
- No maximum pressure or flow rating published
- Needs a pressure washer, like every real cannon
- No warranty term published
How this score was calculated
- Protection claimdropped
- Nothing in this category is bought on how long it lasts, so the axis is dropped and the other weights are re-normalized.
- Capabilitydropped
- Adam's Polishes does not publish a figure for published maximum pressure on this product, so the axis is dropped and the remaining weights are re-normalized.
- Cost per ouncedropped
- This is not a consumable, so cost per ounce says nothing useful and the axis is dropped.
- Price against the ceiling1.7/10, weight 14%
- A listed $74.99 against the $90 one upgrade in this category realistically tops out at. A list price captured on the compile date, not a live price and not what you will pay.
- Written commitmentdropped
- Adam's Polishes publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency4.3/10, weight 18%
- 3 of the 7 specifications we went looking for are published by Adam's Polishes. Every blank row below is something the maker will not put in writing, and it costs the product points here.
List price $74.99 per Adam's Polishes' own store, captured on the compile date below. Not a live price and not what you will pay — the button is where the real number is.
Specifications from Adam's Premium Foam Cannon product page, compiled September 8, 2026.
Prices last verified September 27, 2026. They move constantly; the figure on Amazon when you click is the real one.
Questions people actually ask
+Is the MTM PF22.2 worth double a cheap cannon?
+Will either cannon fit my pressure washer?
+Does a bigger canister mean thicker foam?
Where these figures came from
- MTM Hydro PF22.2 listing at Adam's Polishes — retrieved 2026-09-27
- Adam's Premium Foam Cannon product page — retrieved 2026-09-27
Every figure on this page is a published manufacturer or authorized-retailer claim, not a measurement we made. How we research explains exactly what we did and did not do.