Product Introduction
Diatomite filter element 30-150-207 is used in the power plant fire-resistant oil regeneration device system, used with cellulose filter element, can keep the acid value of the EH oil system within the normal range, and comprehensively improve the oil quality of the fire-resistant oil system. Under normal circumstances, when the acid value increases by 0.03%, the diatomite filter element should be replaced in time. Nugent diatomite filter element 30-150-207, proven by long-term use, reliable and durable quality.
Dongfang Yoyik is the NUGENT exclusive agent in China, providing original imported NUGENT diatomite filter, alumina filter, ion exchange filter and other filters for many steam turbine generator suppliers and industrial users such as power plants.
Technical Specifications
| Item | Specification |
|---|---|
| Model | 30-150-207 |
| Brand | NUGENT (Genuine US Import) |
| Material | Stainless Steel Frame + High-Purity Diatomaceous Earth (DE) |
| Working Temperature | -10℃ to +100℃ |
| Differential Pressure | Resistant up to 21 MPa |
| Operating Media | Phosphate Ester Fire-Resistant Oil (EH Oil) |
| Acid Removal Efficiency | >90% |
| Downstream Companion | 01-094-006 Cellulose Filter (Fine Filtration) |
Applications and Performance Cases
Primary Application Fields
- Power Generation: Core use in turbine EH oil stations to lower acid values and remove polar contaminants. Also used in transformer oil and generator cooling systems.
- Petrochemicals: Filtration and regeneration of lubricants and hydraulic oils to boost equipment life.
- Industrial Systems: Used in steel, metallurgy, and paper mills for oil circulation and cleaning.
- Operations & Maintenance: Widely used in turbine oil, jackshaft oil, and seal oil systems, as well as fan and coal mill lubrication stations.
Real-World Cases
- 600MW Thermal Unit (East China): After using the NUGENT 30-150-207, the EH oil replacement cycle jumped from 18 to 24 months. Servo valve sticking incidents dropped to zero.
- 300MW Plant Acid Control: With an initial acid value of 0.15%, the filter showed results within 8 hours. Continuous operation kept the value stable at 0.1% ± 0.01%.
- Dual-Stage Setup: Paired with the NUGENT 01-094-006 cellulose filter, it forms a “de-acidification + fine filtration” system used for steam turbine units from Dongfang, Shanghai, Harbin.
Core Functions in Regeneration Units
- Lowering Acid Values: High acid reduces oil resistivity and corrodes parts. This filter absorbs acidic compounds to keep the value below 0.2 mgKOH/g. Its capacity is 3 times higher than standard filters.
- Moisture Removal: Diatomaceous earth absorbs free and dissolved water, keeping moisture below 1000ppm to prevent rust and further acid growth.
- Collaborative Filtration: While focused on chemical cleaning, the structure also traps fine mechanical particles. It is best used in a series with fine cellulose filters.
- Preventing “Metal Soaps”: If acids aren’t removed, they react with metals to form sticky “metal soaps.” These clog ports or turn into hard wax that destroys servo valves. High-quality acid removal is the only way to stop this.
Genuine NUGENT vs. Low-Quality Counterfeits
Many fake NUGENT filters exist. Using them often leads to heavy financial loss due to system damage. Here is the difference:
| Feature | Genuine NUGENT 30-150-207 | Counterfeit / Low-Quality |
|---|---|---|
| DE Quality | ✅99.7% purity, activated at 1200℃ | ❌Mixed with clay or sand; high iron/calcium |
| Acid Capacity | ✅Approx. 0.03kg per unit; stable | ❌Only 1/3 to 1/6 of the original capacity |
| Leaching Risk | ✅Low leaching; no particle shed | ❌Crumbles easily; leaches ions causing pollution |
| Seal Process | ✅Integral molding; tight seals | ❌Spot welding; large gaps allow “short circuits” |
| Oil Impact | ✅Stable oil quality (NAS 6) | ❌Creates metal soaps; dirty oil (NAS 8+) |
| Real Cost | ✅Changes every 6 months; cost-effective | ❌Frequent changes (up to 8 times in 6 months) |
Purchase Advice: Buy only from authorized channels. Dongfang Yoyik is the authorized agent for W.M. NUGENT FILTERS in China. We provide original certificates of origin and customs papers for every batch.
Usage and Maintenance Advice
Operational Tips
- Paired Use: Always place a NUGENT 01-094-006 cellulose filter downstream. This catches any DE particles that might shake loose, keeping the system clean.
- Pre-Heating: Before installation, bake the filter at 90℃ for one hour. This removes moisture and makes the acid-absorbing power much stronger.
- Avoid Pollution: Ensure the regeneration unit pipes are sealed tight to prevent air from entering and emulsifying the oil during a swap.
- Dehydration: Since DE catches moisture, use the unit alongside a vacuum dehydrator for the best results.
Maintenance Recommendations
- Regular Testing: Don’t just wait for a set date. Test your EH oil’s acid value, resistivity, and moisture regularly. Use these numbers to decide when to swap the filter.
- Saturation Check: If the acid value stops dropping after 48 hours of continuous run, the filter is full and needs to be replaced.
- Mandatory Swap: Even if the acid looks okay, do not use the same filter for more than 6 months. If acid levels are high, one filter should not work for more than 3 days.
Frequently Asked Questions
1. Why do I need a DE filter instead of a regular one?
Regular filters only catch dirt particles. They cannot change the chemical state of the oil. A diatomaceous earth filter uses chemical adsorption to neutralize acids. Without this, your oil will turn acidic, eat through your parts, and cause your control system to fail.
2. How long does the 30-150-207 filter last?
It depends on how dirty and acidic your oil is. You should replace it if the acid value stops dropping, if the acid value jumps by 0.03 mgKOH/g, or if it has been in use for 6 months.
3. What happens if I use a cheap or fake filter?
It can be a disaster. Cheap filters have high metal impurities that actually make the oil MORE acidic. They also fall apart easily, sending DE dust into your servo valves. This can grind the valve core down, leading to a full oil tank replacement which costs hundreds of thousands.
4. Where can I buy genuine NUGENT 30-150-207 filters?
You can buy them from Dongfang Yoyik, the designated agent for W.M. NUGENT & CO in China. We provide original US import documents to prove every filter is genuine. Avoid unofficial shops to stay safe.
Contact Email: sales@yoyik.com
