255332 - Miller Filtair 400 Vacuum Relief Valve Replacement

Protect Your Fume Extractor and Keep the Air Clean

Your Miller Filtair 400 is your first line of defense against hazardous welding fumes, keeping your workspace safe and your lungs healthy. To keep it running at its best, every component needs to be in top shape, including the Miller 255332 Vacuum Relief Valve. This small but mighty part plays a huge role in protecting the heart of your machine—the motor.

Think of the vacuum relief valve as a safety release for your extractor. If you accidentally step on your hose, kink it, or if your nozzle gets stuck against a flat plate, the airflow stops. In a high-vacuum system, this blockage creates a massive spike in pressure that can starve the motor of cooling air, causing it to burn out rapidly. This valve detects that pressure spike and pops open to let air in, keeping the motor cool even when the suction end is blocked. If your current valve is stuck closed, you risk blowing the motor; if it's stuck open, you lose suction and the fumes won't be captured effectively.

Replacing a faulty valve with this genuine Miller part is a quick and easy fix that can save you the cost of a brand-new machine. It is built specifically for the Filtair 400, so you know it will fit perfectly and work exactly as intended. Don't let a small maintenance issue turn into a shop-down situation. Keep your equipment reliable and your breathing zone clear by ensuring your safety valves are functioning correctly.

Whether you are a shop owner maintaining a fleet of extractors or a welder taking care of your personal rig, this replacement part is essential for long-term reliability. It installs easily, getting you back to welding with full fume protection in no time.