- Corrosion Resistant
- Free Air Displacement of 127 l/min (4.5 cfm)
- Ultimate Vacuum Pressure 25 torr
- Fitted Explosion Proof Motor (Class I, Groups C & D; Class II Groups F & G) with CSA/UL Mark
- Portable

The Welch Diaphragm Pump with Explosion Proof Motor 2090 is designed for safe and reliable operation in hazardous environments, ensuring optimal performance. Visit our diaphragm pumps category to explore more options.
Item# 2090W-01
Suggested Applications
- Vacuum Filtration
- Vacuum Oven
Important: Always use a certified electrician for proper installation of pumps with explosion proof motors. Conduit wining required. No cord, plug, or switch included.
Technical Data
2085 | 2090 | |
|---|---|---|
Free Air Displacement @ 60 Hz, cfm (L/min) | 6.9 (195) | 4.5 (127) |
Ultimate Pressure, torr | 100 | 25 |
Head Material | Coated PTFE | Coated PTFE |
Diaphragm Liner | PTFE | PTFE |
Valves Material | Stainless Steel | Stainless Steel |
Motor Power, HP (kW) at 60 Hz | 1/2 (0.4) | 1/2 (0.4) |
Inlet Connection | NW 25 | NW 25 |
Weight, lbs (kg) | 54 (25.5) | 54 (25.5) |
Dimensions, LxWxH, in (mm) | 27×11.3×11.3 (686×287×287) | 27×11.3×11.3 (686×287×287) |
Pump with 115V Explosion Proof Motor Order Number | 2085W-01 | 2090W-01 |
Downloads
Video Gallery
Watch the video to learn more about the Explosion Proof Diaphragm Pump (2085, 2090)



