MP Filter FMP 039 Series
The MP Filter FMP 039 Series in-line filter is designed for medium-pressure hydraulic systems and coolant filtration in machine tools. Built with anodized aluminum head and housing, it ensures optimal performance up to a maximum working pressure of 110 bar (11 MPa) and flow rates up to 80 l/min. Available with or without a 6 bar bypass valve, it supports microfiberglass or metal mesh filter elements, providing reliable protection for sensitive components.
The MP Filter FMP 039 Series range includes in-line medium-pressure filters, ideal for protecting sensitive components within hydraulic circuits. The hydraulic fluid passes through the filter element with a flow direction from the outside to the inside, technically indicated as OUT to IN. These devices are specifically designed for installation exclusively in a vertical position and are directly connected to system lines using dedicated hydraulic fittings with 1/2″ female threads (available in G 1/2″, 1/2″ NPT, or SAE 8-3/4″-16 UNF variants). The primary objective of the series is to ensure fine filtration, essential for maintaining optimal cleanliness levels and preventing failures within the entire hydraulic system.
The physical structure of the filter is distinguished by the targeted use of high-strength yet lightweight materials. Specifically, both the head and the main housing are made of anodized aluminum, ensuring good durability over time. Filters can be configured with an integrated bypass valve, manufactured in steel; this valve is factory-set to open at 0.6 MPa (6 bar) with a technical tolerance of ±10%, performing the critical function of relieving excessive pressure drops generated across the filter element. Regarding sealing components, the standard configuration includes NBR seals (classified as series A), with the option to select FPM seals (series V) depending on specific operational and chemical requirements of the fluid used.
These filters are highly versatile and are primarily used on delivery lines, operating within medium-pressure industrial machinery or on board mobile machines. Additional key applications include direct use in transmission systems and the purification of coolant fluids in machine tools. The system architecture includes three different filter element lengths (technically coded as 2, 3, and 4), allowing the filter body to be adapted to specific space requirements or contaminant holding capacity needs. Furthermore, the series is designed to support differential clogging indicators, which may be visual, electrical, or electronic. These sensors can be connected to the filter housing through dedicated configurations (such as configuration 6, which includes dual side connections).
The device is capable of withstanding a maximum working pressure of 11 MPa (110 bar), while also offering a certified test pressure of 16.5 MPa (165 bar) and a minimum burst pressure of 33 MPa (330 bar). Rigorous fatigue testing demonstrates excellent resistance to pressure pulsations, guaranteed for 1,000,000 cycles with pressure variations from 0 to 110 bar. The maximum volumetric flow rate achievable by the assembly is 80 l/min. Regarding low-collapse filter media, available construction options include inorganic microfiberglass (with filtration ratings of 3 µm, 6 µm, 10 µm, 16 µm, and 25 µm) and durable metal mesh at 25 µm. Finally, the permitted operating temperature range for safe operation varies from -25 °C up to a maximum of +110 °C.
| Feature | Value |
|---|---|
| Maximum working pressure | 11 MPa (110 bar) |
| Test pressure | 16.5 MPa (165 bar) |
| Minimum burst pressure | 33 MPa (330 bar) |
| Maximum flow rate | Up to 80 l/min |
| Head and Housing Material | Anodized aluminum |
| Bypass valve | Steel, setting 0.6 MPa (6 bar) ±10% |
| Seals | Standard NBR (Series A), Optional FPM (Series V) |
| Operating temperature | From -25 °C to +110 °C |
| Supported filter media | Inorganic microfiberglass (3, 6, 10, 16, 25 µm), Metal mesh (25 µm) |
| Hydraulic connections | 1/2″ (G 1/2″, 1/2″ NPT, SAE 8-3/4″-16 UNF) |