WHSH-M series membrane-based stage-3 vapor recovery units for gasoline stations — compact, explosion-proof, unattended operation, with gravity self-flow oil return.
Our core product for retail stations and small depots — a compact, integrated unit that captures and recovers hydrocarbon vapors displaced from underground storage tanks.
| Parameter | WHSH-M Specification |
|---|---|
| Treatment capacity | 4 – 20 m³/h |
| Recovery technology | Membrane separation (compressor + air-cooled condenser + membrane module) |
| Power supply | AC 380V, 50Hz · 2.5 – 3 kW |
| Explosion-proof / protection | Ex db eb ia mb IIB T4 Gb · IP55 |
| Noise level | ≤ 75 dB |
| Dimensions / weight | 1300 × 900 × 1120 mm · 410 kg |
| Oil return | Gravity self-flow, 500–550 mm elevated lines — no pump, no platform |
| Control | PLC + touchscreen HMI, unattended automatic start/stop on tank pressure |
| Communication | RS485, remote software update, run data history, fault auto-diagnostics |
The WHSH-M unit is built around practical installation and operating advantages verified in the field.
Inlet, return and vent lines grouped 500–550 mm above grade. Recovered liquid flows back to the underground tank by natural gravity — no booster pump, no raised platform, no blocked return lines.
Full DetailsStarts automatically when tank pressure exceeds the preset value, stops when pressure drops to the stop value. Touchscreen HMI shows live data; RS485 and remote software update available.
Full DetailsFully explosion-proof construction (Ex db eb ia mb IIB T4 Gb, IP55) with built-in flameproof electrical cabinet and discharge flame arrestor — safe for outdoor installation at fuel sites.
Full Details