--- title: FSL High Viscosity Filtration Systems Specifications description: FSL High Viscosity Filtration System is designed to filter particulate from heavily contaminated oil for bulk oil handling and fluid transfer | Hy-Pro Filtration --- [![Donaldson Hy-Pro](https://www.hyprofiltration.com/hs-fs/hubfs/Donaldson%20Hy-Pro%20Logo_Blue.png?width=170&height=76&name=Donaldson%20Hy-Pro%20Logo_Blue.png) ![Donaldson Hy-Pro](https://www.hyprofiltration.com/hs-fs/hubfs/Donaldson%20Hy-Pro%20Logo_Blue.png?width=170&height=76&name=Donaldson%20Hy-Pro%20Logo_Blue.png) ](https://www.hyprofiltration.com?hsLang=en) [**](https://www.hyprofiltration.com/products/fluid-conditioning-equipment/offline-filter-system/fsl-specifications#tmpmodule_1710871496765239) [![Distributors](https://no-cache.hubspot.com/cta/default/170326/6a993b6f-f737-4a22-8a35-a45c4da5c3b4.png)](https://cta-redirect.hubspot.com/cta/redirect/170326/6a993b6f-f737-4a22-8a35-a45c4da5c3b4) [![eCatalog](https://no-cache.hubspot.com/cta/default/170326/4050f587-90b6-4151-8b5e-82d87ca58336.png)](https://cta-redirect.hubspot.com/cta/redirect/170326/4050f587-90b6-4151-8b5e-82d87ca58336) ** ## FSL High Viscosity Filtration Systems A dedicated contamination solution for bulk oil handling and fluid transfer. Designed to excel in filtering particulate from heavily contaminated oil, the FSL keeps gearbox lubricant clean and equipment running efficiently. Ideal for high viscosity gearbox or lube applications and highly contaminated fuel applications   [![Download Brochure](https://no-cache.hubspot.com/cta/default/170326/d5d9f698-9ee8-46af-ab58-d7092030a794.png)](https://cta-redirect.hubspot.com/cta/redirect/170326/d5d9f698-9ee8-46af-ab58-d7092030a794) Dimensions #### Height 50” (127 cm) #### Width 22” (56 cm) #### Depth 28” (71 cm) #### Weight 222 lbs (101 kg) Dimensions are approximations taken from base model and will vary according to options chosen. Connections #### Inlet with 3-way valve FSL05-FSL10: 1” FNPT FSL20-FSL30: 1.5” FNPT #### Outlet FSL05-FSL10: 1” FNPT FSL20-FSL30: 1.25” FNPT Operating Temperature #### Fluid Temperature 30°F to 225°F (0°C to 105°C) #### Ambient Temperature -4°F to 104°F (-20C to 40C) Materials of Construction #### Vessel Carbon steel with industrial coating Electric Motor TEFC, 56-215 frame 0.5-3 hp, 1450-1750 RPM, see Appendix for amp ratings motor starter MSP (motor starter/protector) in an IP65, aluminum enclosure with short circuit and overload protection. pump Cast iron, positive displacement gear pump with internal relief. Maximum pressure on pump inlet 15 psi (1 bar). Consult factory for higher pressures. Pump bypass Full bypass at 150 psi (10 bar) 10 GPM pump is rated for intermittent duty only at pressures above 100 psi. Continual operation with dual clogged filters resulting in operating pressures over 100 psi will reduce pump life  and/or cause premature pump failure. Pneumatic Option Air Consumption ~40 cfm @ 80 psi Air consumption values are estimated maximums and will vary with regulator setting. Media Description #### A G8 Dualglass high performance media combined with water removal scrim. βx[C] ≥ 4000 (βx ≥ 200) #### M G8 Dualglass, our latest generation of DFE rated, high performance glass media for all hydraulic & lubrication fluids. βx[C] ≥ 4000 (βx ≥ 200) #### W Stainless steel wire mesh media βx[C] ≥ 2 (βx ≥ 2) Viscosity 2-5000 cSt When sized and installed appropriately. Contact factory for applications above 800 cSt for sizing requirements. Replacement Elements ![FSL replacement elements ](https://www.hyprofiltration.com/hs-fs/hubfs/Hy-Pro%20Website%20Images/FSL/Screen%20Shot%202018-06-29%20at%209.42.17%20AM.png?width=1890&name=Screen%20Shot%202018-06-29%20at%209.42.17%20AM.png "FSL replacement elements ") Filter Sizing Guidelines Filter assembly clean element ΔP after actual viscosity correction should not exceed 10% of filter assembly bypass setting. See filter assembly sizing guidelines & examples. For applications with extreme cold start condition contact Hy-Pro for sizing recommendations. ### LF ΔP Factor ![FSL kfactors](https://www.hyprofiltration.com/hs-fs/hubfs/FSL%20kfactors.png?width=1275&name=FSL%20kfactors.png "FSL kfactors") Fluid Compatibility Petroleum and mineral based fluids, #2 diesel fuels (standard). For specified synthetics contact factory for compatibility with fluorocarbon seal option. For phosphate ester (P9) or skydrol fluid (S9) compatibility select fluid compatibility from special options. Hazardous Environment Options Select pneumatic powered unit (Power Option 00) or explosion proof NEC Article 501, Class 1, Division 1, Group C+D. Call for IEC, Atex or other requirements. If Explosion Proof option (X--) selected, no electrical cord or cord reel will be included. ## Have a Question for Donaldson Hy-Pro? 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