TGO255
Spin-on Oil Filter for Screw Compressors — TG Filter (Italy), Thread 3/4″ 16 UNF, Cross-Reference for Kaeser 6.1726.0, Remeza 4052004003, Boge 558000303
TGO255 is a spin-on oil filter manufactured by TG Filter (Italy) for lubricating oil filtration in screw compressors and vacuum pumps. Thread 3/4″ 16 UNF, by-pass valve at 2.5 bar, anti-drain valve at 0.12 bar, nominal flow 40 l/min. Compatible cross-reference for Kaeser 6.1726.0 / 6.1985.0, Remeza 4052004003, Boge 558000303, CompAir 00956550 and other brands.
Technical Specifications — TGO255
| Filter type | Oil spin-on |
| Filter media | High-quality cellulose |
| Height (H) | 140–143 mm |
| Outer diameter (A/D1) | 93 mm |
| Inner seal diameter (D2) | 62 mm |
| Thread (B1/D3) | 3/4″ 16 UNF |
| By-pass valve | Yes, opens at 2.5 bar |
| Anti-drain valve | Yes, opens at 0.12 bar |
| Nominal flow | 40 l/min |
| Max working pressure | 14 bar |
| Base / canister wall thickness | 3 mm / 0.6 mm |
| Manufacturer | TG Filter, Italy |
Cross-Reference Table for TGO255
| Manufacturer | OEM Part Numbers |
|---|---|
| Kaeser | 6.1726.0, 6.1985.0 |
| Remeza | 4052004003 |
| Boge | 558000303, 558000303P |
| CompAir / Demag | 00956550, 04819974, 98262-1230, C16012302 |
| Fini | 048035000 |
| Atmos | 427700941000, 627960941000 |
| Maco Meudon | 430001, 521824, 521829, 68521824 |
| Leybold | 71018858 |
| D.V.P. | 1809002 |
| Schulz | 007.0115-0 |
| Solid Air | S40201055P |
| Stenhoj | 213128 |
The Two Valves in TGO255: What They Do
By-pass Valve (2.5 bar) — Cold-Start Protection
At cold start, viscous oil creates high resistance through the filter element. When the pressure differential reaches 2.5 bar the by-pass valve opens, allowing oil to bypass the element — preventing element rupture and oil starvation of bearings and rotors. As oil warms up, resistance drops, the valve closes and normal filtration resumes. A filter without a by-pass valve is dangerous in cold climates.
Anti-Drain Valve (0.12 bar) — Shutdown Protection
Retains oil in the filter when the compressor stops. Without it, oil drains back to the sump under gravity — the filter empties. At the next start, the oil system runs for several seconds without oil pressure, risking dry friction in bearings. The 0.12 bar valve holds oil in the filter, ensuring instant lubrication at restart.
Summary: Both valves in TGO255 are not optional extras — they are critical safety features for protecting the screw block. Never fit a filter without by-pass and anti-drain valves if your compressor originally used them.
TG Filter: Italian Quality for Industrial Compressors
TG Filter is an Italian manufacturer of filtration elements for compressor equipment, producing oil filters, air filters and oil-air separators. TG Filter products are engineered as direct cross-references to original elements from the world’s leading compressor brands and meet their technical requirements.
- High-quality cellulose filter media for effective retention of wear particles, carbon deposits and mechanical contaminants.
- Metal canister with 0.6 mm wall and 3 mm base — withstands up to 14 bar and sudden pressure spikes at start-up.
- Precision seals eliminate unfiltered oil bypass around the element.
Компания ACVATRON специализируется на поставке высококачественных сменных фильтров и запасных частей для промышленного оборудования. Мы понимаем, что стабильная работа вашего предприятия зависит от чистоты воздуха, масла и топлива, поэтому предлагаем решения под любой бюджет и технические задачи.
Наш ассортимент: От мировых брендов до проверенных аналогов
Мы обеспечиваем комплексный подход к обслуживанию вашей техники, предлагая два варианта комплектующих:
1. Оригинальные запчасти и расходники Для тех, кто предпочитает строгое соблюдение регламентов заводов-изготовителей, мы поставляем оригинальные фильтры от лидеров рынка:
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Компрессорные бренды: Remeza, Airpol, Mattei, Dalgakiran, Fiac.
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Специализированные бренды фильтрации: TG-filter, Noitech, Donaldson.
2. Качественные альтернативы (Китай) Мы также предлагаем широкий выбор взаимозаменяемых фильтров производства проверенных заводов Китая. Это отличное решение для оптимизации затрат без критической потери производительности.
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Экономия: Существенное снижение эксплуатационных расходов.
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Наличие: Быстрая поставка популярных позиций.
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Совместимость: Полное соответствие техническим параметрам оригиналов.
Почему выбирают ACVATRON?
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Гибкость: Вы сами выбираете между «премиум» оригиналом и «прагматичным» аналогом.
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Экспертиза: Помогаем точно подобрать фильтр по кросс-номерам или характеристикам оборудования.
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Надежность: Работаем только с теми китайскими производствами, чья продукция прошла проверку временем.
Ваш компрессор заслуживает чистого дыхания. Будь то оригинальный Donaldson или качественный заводской аналог — с ACVATRON ваша техника в надежных руках.
MD2032, Молдова, Кишинев, ул. Сармизегетуса 12, офис 129
How to Select the Right Oil Filter for Your Screw Compressor
The most reliable method: match by OEM part number. Check the cross-reference table above. If your number is listed, TGO255 fits.
If you don’t have the part number, select by specifications: thread (3/4″ 16 UNF), outer diameter (93 mm), height (140–143 mm), presence of both valves.
Oil Filter Change Intervals for Screw Compressors
Change the oil filter at every oil change — at each scheduled service. Never add fresh oil to a compressor with a dirty filter — the new oil will be contaminated immediately. Standard intervals: first service at 500 hours, subsequent services every 2,000–3,000 hours.
We also stock screw compressor oil at Acvatron.
Frequently Asked Questions about the TGO255 Oil Filter
Is TGO255 a suitable replacement for Kaeser 6.1726.0?
Yes. TGO255 is the cross-reference equivalent for Kaeser 6.1726.0 and 6.1985.0. Thread 3/4″ 16 UNF, by-pass 2.5 bar, OD 93 mm, height 140–143 mm — all match.
What is the by-pass valve for?
Protects against cold-start oil starvation. At 2.5 bar pressure differential across the filter, the valve opens and oil bypasses the element, preventing rupture and bearing starvation. Closes as oil warms up.
What is the anti-drain valve for?
Retains oil in the filter at shutdown. Without it, the filter drains and at restart the bearings run for seconds without lubrication — critical risk to the screw block.
How often should the oil filter be changed?
At every oil change. First service at 500 hours, subsequent every 2,000–3,000 hours. Never add fresh oil with a dirty filter.
What is a spin-on filter and how is it changed?
Self-contained metal canister with its own thread. Unscrew old filter, lightly oil new seal, hand-tighten new filter to seat, then turn a further 3/4 turn. Do not overtighten.
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