Part 920-931 is a replacement body filter used on compatible Commander and Admiral airless sprayers. It strains debris and contaminants from the coating material before it reaches the pump and spray gun, protecting internal components from damage and ensuring a smooth spray pattern. This filter restores proper filtration when original filters become clogged or damaged.
| Part Number | 920-931 |
|---|---|
| Part Description | Body filter |
| Brand | Genuine replacement |
| Fits | Commander, Admiral |
| Condition | New |
The 920-931 body filter is a critical filtration component used in the fluid system of Commander and Admiral airless sprayers. It is typically located in the pump body or fluid section, where it strains debris, dried paint particles, and other contaminants from the coating material before they can enter the pump or reach the spray gun. This filtration is essential for protecting precision components such as pump packings, valves, and spray tip orifices from abrasive damage and clogging. The filter element is manufactured from a specific mesh size, selected to trap particles large enough to cause problems while allowing proper material flow.
In professional painting applications, even small contaminants can cause significant problems. A particle lodged in a spray tip can ruin the spray pattern, requiring the operator to stop and clean or replace the tip. Contaminants entering pump valves can cause them to seat improperly, leading to pressure loss and inefficient operation. Over time, accumulated debris can score cylinder walls and damage packings, leading to costly repairs. The 920-931 body filter intercepts these particles before they can cause damage. However, as the filter traps debris, it gradually becomes clogged, restricting flow and causing pressure drop. A clogged filter can starve the pump, leading to erratic spray patterns, reduced performance, and cavitation that damages the pump.
Regular inspection and replacement of the body filter is a simple but crucial maintenance task. The 920-931 filter should be replaced according to the manufacturer's recommendations or whenever signs of clogging appear, such as reduced flow or pressure despite clean tips and proper pump operation. Replacing a clogged filter restores full flow and protects downstream components from contamination. The filter is designed for easy access and replacement, allowing technicians to perform this maintenance quickly during routine service. Using genuine 920-931 filters ensures correct mesh size, proper fit in the filter housing, and compatibility with the materials being sprayed. For Commander and Admiral owners, maintaining clean filtration is one of the most effective ways to ensure reliable operation, consistent spray quality, and long service life from their equipment.
| Contaminant removal | Traps debris before it reaches pump and gun |
|---|---|
| Component protection | Prevents damage to packings, valves, and tips |
| Spray quality | Ensures clean material for consistent pattern |
| Flow maintenance | Removes particles that could restrict flow |
| Visible debris | Filter element appears dirty or clogged |
|---|---|
| Reduced flow | Lower output despite clean tips and proper pump operation |
| Pressure drop | System pressure lower than normal |
| Spray issues | Erratic pattern or sputtering from contaminated material |
This body filter (part 920-931) is designed for use in the following airless sprayer models. Always verify fitment with your machine's parts diagram.
| Series / Model | Component |
|---|---|
| Commander | body filter |
| Admiral | body filter |
When servicing the body filter, consider inspecting these companion parts.
Check for debris; replace if clogged or damaged.
Inspect siphon hose strainer for debris or damage.
Check for cracks or worn seals that could cause leaks.
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