Accessories
Filters
Vacuum pump accessories
This category brings together the accessories that protect vacuum pumps, support filtration and separation, and improve system operation. It is organized by function, so you can find what each accessory does and when it is needed.
Accessories are model-specific. Confirm the pump model and the connection size, for example NW16 or NW25, before ordering.
Choosing accessories+
Before ordering, confirm the accessory matches the pump model and application, the connection standard and adapter type (for example NW16 or NW25), and the flow rate, capacity and pressure limits it must handle. An accessory sized or connected incorrectly will not fit or perform.
No single accessory solves every liquid, vapor and noise issue at once, so select by the specific function you need, and combine accessories where a process demands both protection and noise control. Match replacement elements to the exact filter or trap they serve.
Accessory types by function+
Accessories group by the job they do.
- Acid neutralization trapsProtect the pump from corrosive vapors. Offered in NW16 and NW25 sizes with adapter kits.
- Exhaust filters and oil mist eliminatorsCapture oil fog and mist from the exhaust of oil-sealed pumps, filtering fine particles and reducing noise, with replaceable elements sized to the pump.
- Inlet condensersRemove condensable vapor before it reaches the pump.
- SilencersReduce discharge noise.
- Hoses, adapters and flange fittingsConnect the pump to your system.
Related categories
Vacuum Pump Oils Service Kits Vacuum Filtration Vacuum Oven Rotary Evaporator
FAQs+
What are the most common vacuum pump accessories?
Common accessories include acid traps, exhaust filters and oil mist eliminators, inlet condensers, silencers, and hoses and adapters. Each addresses a specific protection, filtration or noise need.
What is an acid trap for a vacuum pump?
An acid trap, or acid neutralization trap, is fitted at the pump inlet to capture and neutralize corrosive acidic vapors before they reach and damage the pump. Welch offers NW16 and NW25 sizes with adapter kits.
When do you need an acid trap on a vacuum pump?
Use an acid trap when the process produces acidic or corrosive vapors that would attack the pump's internals. It protects the pump and extends service life in corrosive applications.
What is a vacuum pump exhaust filter used for?
An exhaust filter, or oil mist eliminator, captures oil fog and mist from the exhaust of an oil-sealed pump, keeping the workspace clean and reducing noise. Elements are replaceable and sized to the pump.
How do you choose the right vacuum pump exhaust filter?
Match the filter and its element to your pump model and outlet connection, and to the pump's flow. Welch exhaust filter elements come in sizes for different pumps and filter fine particles; confirm the correct element for your model.
What is an inlet condenser used for?
An inlet condenser removes condensable vapor from the inlet stream before it reaches the pump, protecting the pump oil and mechanism from contamination.
What is a vacuum pump silencer used for?
A silencer reduces the noise of the pump's exhaust or discharge. Exhaust filters and oil mist eliminators also reduce noise while capturing oil mist; confirm which functions a given accessory provides.