From the first-generation VRU to the latest GreenGuard platform — a decade of continuous innovation.
The evolution of Datian Machine's vapor recovery technology since 2016.
Since 2015, Datian Machine has pioneered advancements in vapor recovery systems — a journey that ultimately gave rise to the GreenGuard brand. What began as a condensation-based prototype has grown into a globally deployed Stage III platform, trusted by major oil companies and stations across China, the Middle East and beyond.
Each generation reflects lessons learned in the field: tighter emission control, faster cooling, lower energy consumption and longer service life. The result is a product family that turns emission challenges into operational and environmental value.
Pure carbon adsorption — activated-carbon canisters capture fuel vapor from the vent stream, lowering tail-gas emission concentration.
Introduced pure condensation technology, operating below -30°C and returning recovered oil directly to storage — no membrane filtration yet.
Combined condensation with activated-carbon adsorption for enhanced vapor separation. Laid the groundwork with over 400 units deployed alongside Gen 2.
The official launch of GreenGuard, integrating compressor-based cooling, liquid oil recovery and membrane filtration, enhanced with dual air cooling for higher efficiency. Over 500 units deployed, with the earliest still running strong after 4–5 years at Sinopec.
Three field-driven upgrades expanded GreenGuard from a domestic Stage III retrofit into a globally deployable platform — hybrid cooling, climate-hardened compressors and the current DT-VR26M1 / DT-VR26M2 models.
Switched to a hybrid cooling system (-10 °C condensation), boosting oil and gas recovery. Rapidly adopted across China, with units operating reliably for up to 1.5 years.
Datian launched dedicated R&D on 4HP condensation combined with membrane separation technology, and formally established the GreenGuard brand as a distinct product line.
A more durable compressor and stronger condensation (-30 °C, 4 HP), engineered for demanding environments such as the Middle East — marking GreenGuard's expansion into global markets.
The current GreenGuard models, ready for widespread deployment across new and existing sites, with or without Stage I and Stage II vapor recovery systems.
After two years of in-house development and field testing, Datian announced its own oil-gas separation membrane — fully replacing and outperforming MTR membranes.
New condensing system with a 316L stainless-steel housing and 304 stainless-steel internal condensing tubing. Larger condensing surface area and longer service life across varied environments, exceeding the 2025 condensing system.
From early condensation methods to today's integrated, high-efficiency systems, GreenGuard represents Datian Machine's commitment to sustainable vapor recovery — turning emission challenges into operational and environmental value.
EU-Type Examination Certificate IEP 26 ATEX 1835X for GreenGuard DT-VR26M1/M2.
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