Deep Vacuum Ready
Vacuum rating of 1×10⁻³ mmHg (1.3×10⁻³ mbar) for deep-vacuum applications.

DFS SERIES · BLOWER ACCESSORIES
DFS Series inline air filters help capture particles in the suction lines of vacuum pumps, blowers, compressors and pneumatic conveying systems. The paper filter element and clip-secured housing simplify maintenance and cleaning. Operating temperature range: -15 °F (-26 °C) to 220 °F (104 °C).
Use the drawing and dimensional table together to select the required connection size and confirm the preliminary installation envelope.

Scroll horizontally to review every published dimension.
| Model | Inlet / Outlet | d1 | d2 | d3 | d4 | h1 | h2 | h3 | h4 |
|---|---|---|---|---|---|---|---|---|---|
| DFS 020 | 3/4″ | G3/4 | 40 | 100 | 102 | 90 | 43 | 65 | 12 |
| DFS 125 | 1 1/4″ | G1 1/4 | 48 | 125 | 145 | 116 | 68 | 77 | 14 |
| DFS 150 | 1 1/2″ | G1 1/2 | 53 | 172 | 188 | 167 | 111 | 100 | 16 |
| DFS 200 | 2″ | G2 | 68 | 194 | 217 | 256 | 129 | 110 | 20 |
| DFS 250 | 2 1/2″ | G2 1/2 | 86 | 194 | 217 | 256 | 129 | 110 | 13 |
| DFS 400 | 4″ | G4 | 123 | 268 | 272 | 263 | 147 | 197 | 74 |
Connection sizes are in inches / G-thread standard; dimensions d2-d4 and h1-h4 are in millimetres.
Vacuum rating of 1×10⁻³ mmHg (1.3×10⁻³ mbar) for deep-vacuum applications.
The paper element provides 1-micron particle retention with high dust-holding capacity and straightforward cleaning.
Steel construction, stainless-steel lid clips and a leak-tight housing support reliable service access.