Product Overview
Stainless steel strainer screen with an integrated check valve. It filters debris out of the solution before it reaches the jets, and the check valve stops flow running back the other way.
It is part of a three-piece strainer assembly — screen, body and adapter — not a standalone fitting.
How the Strainer Assembly Goes Together
| Part | Brass | Stainless |
|---|---|---|
| Strainer screen, with check valve | NA0825 | NA0825-SS (this product) |
| Strainer screen, no check valve | NA0803 | Not stocked |
| Strainer body | NA0802 | NA0802-SS |
| Strainer adapter, female | NA0804 | NA0804-SS |
| Strainer adapter, male | Not stocked | NA0805-SS |
Check Valve or Not?
The check valve prevents backflow through the strainer. Where a sprayer or tool draws from a container, that stops the line emptying back and keeps the draw primed.
If your setup does not need backflow prevention, the screen without a check valve is NA0803 — fewer moving parts to foul.
Brass or Stainless?
Stainless earns its price where acidic tile and grout chemistry is routine. Brass is adequate for carpet cleaning solution at normal pressure and temperature, and it is cheaper — NA0825.
Why Strain at All
A blocked jet is the most common avoidable stoppage on a hand tool, and it always happens on the job rather than in the workshop. Everything that blocks a jet arrives through the solution line: undissolved powder, container sediment, tape fragments, scale off a fitting.
A strainer costs less than the time lost clearing one jet on site.
Specifications
| Part number | NA0825-SS |
|---|---|
| Material | Stainless steel |
| Check valve | Integrated |
| Used with | Strainer body and strainer adapter |
The manufacturer does not publish the mesh aperture. Rather than estimate it, we have left it out.
Operating Advice
- Clean the screen at the same interval you check jets, not when flow drops. A partly blocked screen reads as a pressure problem.
- Rinse from the clean side outward so debris comes off the mesh rather than through it.
- Check the strainer first when a ratio or a spray pattern goes wrong. It is upstream of everything else.
- Replace on damage rather than on hours — a split screen passes everything and gives no warning.
Frequently Asked Questions
Does it come with the body and adapter?
No. The screen is one of three pieces. See the table above for the body and adapter in each material.
Can I mix brass and stainless parts?
Mechanically the sizes match. If you are moving to stainless because of acid chemistry, changing only one piece leaves the brass ones exposed.
What does the check valve actually do?
Stops flow running back through the strainer, which keeps a draw primed and stops the line emptying back into the container.
How often should it be cleaned?
Whenever you check jets. It is the same job and the same two minutes.
Related Products
- Strainer Screen with Check Valve, Brass (NA0825)
- Mesh Strainer without Check Valve (NA0803)
- Stainless Steel Strainer Body (NA0802-SS)
- Stainless Steel Strainer Adapter (NA0804-SS)
What We See in the Field
Strainers are fitted, forgotten, and then blamed for restricting flow. A screen that has not been cleaned in a season is doing exactly what it was bought to do — holding everything it caught — and two minutes with clean water puts the pressure back.
