



ESEINOR hydraulic return-line filter removes solid contaminants before hydraulic oil returns to the






The DESEINOR orange return oil filter is a core purification component in the hydraulic system's return oil circuit. It is primarily used to efficiently remove solid contaminants such as metal shavings, seal debris, and dust generated during system circulation before the hydraulic oil returns to the tank. This protects precision components like hydraulic pumps, control valves, and cylinders from wear and blockage, thereby extending the service life of the hydraulic system and maintaining oil cleanliness.
Core Structure and Features
Casing Design: Constructed with a high-strength carbon steel casing, it features an orange anti-corrosion coating on the surface, offering impact and corrosion resistance to adapt to harsh conditions such as mining and engineering machinery. The flange/tube interface design ensures easy installation and compatibility with various pipeline layouts.
Filter Core: Equipped with a high-precision filter element (available in materials such as fiberglass, paper, and metal mesh) with filtration accuracy ranging from 160 to 500 mesh (100 to 550 microns), or multi-stage filtration accuracy from 1 to 30 microns as per requirements. It physically intercepts impurities while maintaining low flow resistance to avoid excessive system pressure loss, with a maximum flow rate of 150 L/min to 610 L/min.
Safety Protection: Standardly equipped with a bypass valve and a clogging signal device (optional). When the filter element becomes clogged and the pressure differential reaches the set value, the bypass valve automatically opens to ensure continuous system operation. The signal device provides real-time reminders to maintenance personnel to replace the filter element, preventing equipment failures caused by filtration failure. Orifice sizes from 10 to 100 mm are available, meeting the different flow requirements of small and medium hydraulic stations to large engineering machinery.
Product Name | Return Oil Filter | Application | Tank Truck Accessaries |
Model Number | GY-GLQ-40 | Max Flow | 150L/min~610L/min |
Material | Aluminum alloy | Temperature Range | -25℃~+100℃ |
Filtering precision | 1/3/5/10/20/30μm | Installation Method | stationary type |
Brand Name | DESEINOR | surface treatment | rust preventive coating |
applicable caliber | 25mm~80mm | Size | 1.5” |
Packing | Carton | Color | Yellow(optional) |
Packing Size | |||
L*W*H(CM) | 18*20*42 | ||
QTY/CTN | 1PCS/CTN | ||
N.W(KGS) | 4.9KGS | ||
1、Broad filtration range: The standard return line filter options cover 160–500 mesh (100–550 μm), with custom 1–30 μm multistage fine filtration available for applications requiring finer contaminant control.
2、Low flow resistance: The filter element removes particles through physical interception while maintaining low flow resistance, limiting pressure loss at flow rates from 150 to 610 L/min.
3、Bypass protection: A standard bypass valve opens automatically when the filter element becomes clogged, and differential pressure reaches the set point, allowing the hydraulic system to continue operating.
4、Optional clogging indicator: An optional indicator alerts maintenance personnel when the filter element requires replacement, helping prevent faults caused by ineffective filtration.
5、Multiple connection sizes: Connection size options from 25 to 80 mm are available to cover the flow requirements of systems ranging from small hydraulic power units to large construction machinery.