Description
MTM Hydro · PF22.2 · Stainless 1/4″ Plug · Q1 2024 Revision · US Retailer: Detail Division
The Industry Standard.
V2 is Better Than Ever.
Cast Brass Head. Stainless 1/4″ Plug. Full Rebuild Parts Availability.
The foam cannon that set the benchmark — revised, refined, and still the one to beat.
The MTM Hydro PF22 has been the industry’s gold standard of foam cannons for as long as anyone in this business can remember. From the weekend enthusiast to the seasoned professional — if you’ve owned a few foam cannons in your lifetime and you’ve had one of these, it’s immediately obvious why the reputation exists. Proper foam production, a meaningful range of adjustments, and the ability to actually rebuild the unit with parts that are kept in stock.
The PF22.2 is MTM Hydro’s latest revision — released Q1 2024 — and it addresses the last remaining spec that needed updating. The unit now ships with a
stainless steel 1/4″ plug as standard
, effective across all units from Q3 2024 onward. This is the version carried here, and it is the only version worth owning.
Pressure Range
1,100–4,000
PSI operating range
Flow Range
1.8–5.3
GPM operating range
Installed Orifice
1.25mm
3.5 · 1.1mm / 3.0 included
Why the Stainless Plug Matters
Every PF22.2 listed here ships with a
stainless steel 1/4″ male plug — and that is not a minor detail.
If you find the PF22 priced lower elsewhere, the first question worth asking is what plug is actually fitted. A standard brass plug in a wet, chemical environment corrodes. It seizes. It becomes a problem that the rest of the cannon’s quality has to apologize for.
The stainless plug costs more to produce. That cost is built into this unit.
A corroded fitting is an avoidable problem — and we choose to avoid it.
“If you have owned a few foam cannons in your lifetime and you’ve got one of these, it’s obvious why they have the reputation they do.”
— Detail Division
What the PF22.2 Delivers
Cast Brass Head
Not aluminum, not plastic. Cast brass — the material choice that defines professional-grade foam cannon construction. Heavy, precise, built to last years of regular use without degrading.
Adjustable Fan Blades + Adjustable Spray Pattern
The PF22.2 adds a new capability over the original — full adjustability of both the fan blades and the spray pattern orientation (vertical or horizontal). More control over coverage, less product wasted.
Chemical Injection Knob — Top-Mounted
The knob on top of the head draws more or less chemical through the internal chamber — directly controlling foam density. Dial it up for a thick blanket, dial it back for lighter coverage. The internal agitator does the rest.
Twist-Lock Sandwich Adapter — O-Ring Sealed
The bottle connects via a twist-lock sandwich adapter sealed by an o-ring — a leak-free, secure connection that doesn’t rely on thread tightness or luck. Includes a twist cap for transporting a full bottle.
Two Orifice Inserts Included
Ships with a 1.25mm / 3.5 orifice installed — suited for most gas and commercial pressure washers. A 1.1mm / 3.0 orifice is also included for low-GPM electric pressure washers. The right orifice for your setup is already in the box.
Weighted Pickup Filter
The solution pickup straw is weighted — it follows the foam solution to the bottom of the bottle regardless of angle, ensuring consistent draw and no loss of foam density mid-application.
Rebuild Parts — In Stock and Available
This is the foam cannon that you can actually maintain. MTM Hydro keeps rebuild parts available — seals, o-rings, orifice inserts — and Detail Division stocks them too. A unit this good deserves to be serviced, not discarded.
1L Wide-Mouth Bottle
Large capacity, wide opening — easy to fill, easy to measure, easy to mix. The bottle is designed for practical use, not just display.
Specifications
Head Construction
Cast Brass
Plug
Stainless Steel 1/4″ Male (M)
Fittings Included
1/4″ Plug (M) + M22
Installed Orifice
1.25mm / 3.5
Included Orifice
1.1mm / 3.0 (low GPM electric)
Bottle Capacity
1L · Wide-Mouth
Min. Pressure
1,100 PSI
Max. Pressure
4,000 PSI
Min. Flow
1.8 GPM
Max. Flow
5.3 GPM
Max. Temperature
140°F
Revision
PF22.2 · Q1 2024
Perfect For
Auto Detailing
RV
Marine
Aviation
Agriculture
Concrete & Brick
Home Cleaning
Restaurant Hoods
Compatibility Note — Residential Pressure Washers
The PF22.2 ships with MTM Hydro’s standard 1/4″ male plug — the industry standard for commercial and professional use. However,
certain residential pressure washer models from brands including Generac, Greenworks, Ryobi, and AR Blue Clean use couplers with tighter tolerances
that may not receive an MTM plug directly.
The issue is dimensional — the chamfer and neck on an MTM plug run approximately 1.5mm shorter than some residential couplers require. If your pressure washer falls into this category, a specific 1/4″ male plug adapter resolves it entirely.
Once the correct plug is fitted, the performance of the PF22.2 makes finding that fitting completely worth it.
Not all models from the brands listed are affected — only certain units. If you have questions about your specific setup, reach out before ordering.
The MTM PF22 earned its reputation by being genuinely better — better construction, better adjustability, better foam output, and the kind of parts support that lets you maintain rather than replace.
The PF22.2 with stainless plug is the version that should have always existed.
See the full
Care Instructions and Specifications
.
PROP 65
.
At a Glance
Cast brass head · industry standard
Stainless 1/4″ plug · corrosion-free
1,100–4,000 PSI · 1.8–5.3 GPM
Adjustable fan + spray pattern
Two orifice inserts included
Rebuild parts · in stock
Twist-lock o-ring sealed adapter
Max 140°F · PF22.2 Q1 2024
Certain residential pressure washers (Generac, Greenworks, Ryobi, AR Blue Clean — select models only) may require an additional 1/4″ male plug adapter
due to coupler tolerance differences. Not all models from these brands are affected. Once the correct fitting is in place, the PF22.2 performs exactly as it should. Contact us if you are unsure about your setup before ordering.
All PF22.2 units listed here ship with the stainless steel 1/4″ plug — effective Q3 2024.
If you see the PF22 offered at a lower price elsewhere, verify the plug specification. A brass plug in a wet, chemical environment corrodes and eventually seizes. The stainless plug is not a premium upgrade — it is the correct specification for this tool.
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