Return Filters E 9 E E Tank top mounting Connection up to G Nominal flow rate up to l/min Description Application In the return line circuits of hydraulic systems. Performance features Protection against wear: By means of filter elements that, in full-flow filtration meet even the highest demands regarding cleanliness classes. Protection against malfunction: By means of full-flow filtration in the system return, the pumps above all are protected from dirt particles remaining in the system after assembly, repairs, or which are generated by wear or enter the system from outside. Return Filter E Special features By-pass valve: The location close to the inlet port prevents dirt particles retained by the filter element from entering into the clean oil side. Removable bowl: In case of maintenance the filter bowl is removed together with the filter element - therefore dirt particles are not flushed back into the tank. Extension pipe: A correct extension pipe length ensures oil outlet below minimum oil level and prevents foaming. Filter elements Flow direction from outside to centre. The star-shaped pleating of the filter material results in: large filter surfaces low pressure drop high dirt-holding capacities long service life Ventilating Filter Ventilation of the reservoir by an integral star-shape pleated filter element: removable (replace annually!) splash-proof fineness µm Filter maintenance By using a clogging indicator the correct moment for maintenance is stated and guarantees the optimum utilization of the filter life. Subject to change.-e Page
Materials Screw-on cap: Filter head: Filter bowl: Seals: Filter media: Polyamide, GF-reinforced Alluminium alloy Polyamide, CF-reinforced, electrically conducting NBR (FPM on request) EXAPOR MAX - inorganic multi-layer microfibre web Paper - cellulose web, impregnated with resin Accessories Electrical and optical clogging indicators are available on request. Dimensions and technical data see cataologue sheet 6.. An optional oil separator (Part No. E.7) is available on request. Extension pipes on the bowl outlet are available in several lengths on request. A self-assembly system for installation of extension pipes can be ordered. For detailed information please see catalogue sheet.9. Characteristics Nominal flow rate Up to l/min (see Selection Chart, column ). The nominal flow rates indicated by ARGO-HYTOS are based on the following features: closed by-pass valve at ν mm /s element service life > operating hours at an average fluid contamination of,7 g per l/min flow volume flow velocity in the connection lines, m/s Connection Threaded ports according to ISO 8 or DIN. Sizes see Selection Chart, column 6 (other port threads on request) Filter fineness µm(c)... µm(c) β-values according to ISO 6889 (see Selection Chart, column and diagram Dx) Dirt-holding capacity Values in g test dust ISO MTD according to ISO 6889 (see Selection Chart, column ) Diagrams Hydraulic fluids Mineral oil and biodegradable fluids (HEES and HETG, see info-sheet.). With high filling conditions we recommend an electrical conductivity >_ ps/m at C. Temperature range - C... + C (temporary - C... + C) Viscosity at nominal flow rate at operating temperature: ν < 6 mm /s as starting viscosity: ν max = mm /s at initial operation: The recommended starting viscosity can be read from the diagram D (pressure drop as a function of the kinematic viscosity) as follows: Find the 7 % p of the cracking pressure of the by-pass valve on the vertical axis. Draw a horizontal line so that it intersects the p curve at a point. Read this point on the horizontal axis for the viscosity. Operating pressure Max. bar Mounting position Preferably vertical, outlet downwards p-curves for complete filters in Selection Chart, column D flow volume at ν = mm /s ( = casing empty) kinematic viscosity at nominal flow,,, E 9,, 7 6 8 Q [l/min] ν [mm /s] Page Subject to change.-e
D flow volume at ν = mm /s ( = casing empty) kinematic viscosity at nominal flow,,,,, E + 7 Q [l/min] 6 8 ν [mm /s] D flow volume at ν = mm /s ( = casing empty) kinematic viscosity at nominal flow,,,,, E + 7 6 8 Q [l/min] ν [mm /s] Filter fineness curves in Selection Chart, column Dx Filtration ratio β for particles > x µm Filtration ratio β as a function of particle size x obtained by the Multi-Pass Test according to ISO 6889 Efficiency [%] The abbreviations represent the following β-values resp. finenesses: For EXAPOR MAX and Paper elements: EX = β (c) = EXAPOR MAX 7EX = β 7 (c) = EXAPOR MAX EX = β (c) = EXAPOR MAX 6EX = β 6 (c) = EXAPOR MAX P = β (c) = Paper Based on the structure of the filter media of the P paper elements, deviations from the printed curves are quite probable. For screen elements: S = screen material with mesh size µm 6S = screen material with mesh size 6 µm S = screen material with mesh size µm Tolerances for mesh size accordung to DIN 89 Particle size x [µm] (for particles larger than the given particle size x) For ventilating filter elements: CL = 99, % Abscheidegrad für Partikel der Größe µm For special applications, finenesses differing from these curves are also available by using special composed filter material. Subject to change.-e Page
Selection Chart Part No. Nominal flow rate Pressure drop see diagram D/curve no. Filter fineness see Diagr. Dx Connection A Dirt-holding capacity Cracking pressure of by-pass Symbol Replacement element Part No. l/min g bar kg 6 7 8 9 E 9-66 D/ P G /, P.6-,8 L.- (CL) - E 9-67 D/ P G /, P.6-,8 - - Weight Replacement ventilating filter Part No. (Filter fineness, see diagrams) Remarks E -67 D/ EX 8 G¾, V.6-, L.- (CL) - E -677 D/ EX 8 G¾, V.6-, - - E -676 8 D/ EX G /, V.6-6, L.- (CL) - E -686 8 D/ EX G /, V.6-6, - - E -898 D/ 6EX G, V.6-8, L.- (CL) - E -888 D/ 6EX G, V.6-8, - - E -87 7 D/ P G /, P.6-*, L.- (CL) - E -86 7 D/ P G /, P.6-*, - - E -67 7 D/ EX 8 G /, V.7-, L.- (CL) - E -667 7 D/ EX 8 G /, V.7-, - - E -676 D/ EX 8 G, V.7-6, L.- (CL) - E -686 D/ EX 8 G, V.7-6, - - E -888 D/ 6EX 8 G, V.7-8, L.- (CL) - E -688 D/ 6EX 8 G, V.7-8, - - E -8 D/ P 7 G, P.7-*, L.- ( CL) - E -86 D/ P 7 G, P.7-*, - - * Paper media supported with metal gauze All filters are delivered with a plugged clogging indicator connection M x,. As clogging indicators either manometers or electrical pressure switches can be used. Optional extension pipes adapt the filter length to various tank depths. For ordering of accessories please use the below mentioned codes. Order example: The filter E -676 has to be supplied with an extension pipe for a mounting depth of mm. Order description: E -676 / EV Part No. (Basic unit) Mounted extension pipe (7 various lengths are available on request) E 9: EV, EV 9, EV, EV 8, EV, EV, EV E : EV 96, EV 6, EV, EV, EV, EV, EV 6 E : EV 97, EV 7, EV, EV, EV, EV 6, EV 7 For the suitable clogging indicators please see catalogue sheet 6.. Remarks: The switching pressure of the electrical pressure switch has always to be lower than the cracking pressure of the by-pass valve (see Selection Chart, column 7). Clogging indicators are optional and always delivered detached from the filter. The filters listed in this chart are standard filters. Other designs available on request. Page Subject to change.-e
Dimensions I +(EV-K) H A B S S Ventilating filter Fineness µm (replaceable) G F Oil separator optional ARGO-HYTOS Part No.: E.7 EV K Ø C Ø D Dia hole in reservoir U Max oil level under stationary conditions when using an oil separator V ØE Design without ventilating filter Design with ventilating filter O Connection M x, for clogging indicator Required mounting surface Q 9º º T 9º º M L L c 9º Q P N P I R Measurements For dimension EV see selection chart Type A B C min/max D E F G H I I K L M N O P P E 9 G ¾ 87/9 7, 8, 88, 7 8 69 E G¾, G 87/9 7, 8, 88, 77 7 8 69 E G¾, G 87/9 7, 8, 88, 78 7 8 69 Type Q R S T U V E 9, 7, AF AF E, 7, AF AF E, 7, AF AF Symbols Subject to change.-e Page
Spare Parts 6 7 8 Pos. Designation Part No. Screw-on cap E. Flat gasket N.8 Compression spring N.7 Filter element see Chart / Col. 9 Filter bowl E9 * E 9.9 Filter bowl E * E.9 Filter bowl E * E.9 6 O-ring 69, x, N7.7 7 Ventilating filter L.-K 8 Housing (for pos. 7) L..8 9 Flat gasket (for versions E.7 without oil separator) Oil separator with Pos. E.7 Flat gasket (for versions E.8 with oil separator) * Specify mounting depth (EV) in mm The functions of the complete filters as well as the outstanding features of the filter elements assured by ARGO-HYTOS can only be guaranteed if original ARGO-HYTOS spare parts are used. Quality Assurance Quality management according to DIN EN ISO 9 To ensure constant quality in production and operation, ARGO-HYTOS filter elements undergo strict controls and tests according to the following ISO standards: ISO 9 ISO 9 ISO 9 ISO 968 ISO 6889 ISO 8 Verification of collapse/burst pressure rating Verification of fabrication integrity (Bubble Point Test) Verification of material compatibility with fluids Evaluation of pressure drop versus flow characteristics Multi-Pass-Test (evaluation of filter fineness and dirt-holding capacity Determination of resistance to flow fatigue using high viscosity fluid Various quality controls during the production process guarantee the leakfree function and solidity of our filters. Illustrations may sometimes differ from the original. ARGO-HYTOS is not responsible for any unintentional mistake in this specification sheet. Page 6 Subject to change.-e