Return Filters E E Tank top mounting Connection up to G¼ / - SE up to l/min / 8. gpm Description pplication In the return line circuits of hydraulic systems. erformance features rotection against wear: y means of filter elements that even in full-flow filtration meet the highest demands regarding cleanliness classes. rotection against malfunction: y 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. Special features Return Filter E y-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. Filling filter / y-pass protection strainer: The filling filter is integrated in the filter element and prevents coarse particles from entering during filling or re-filling due to maintenance or repair reasons. Filling can be carried out at the filter. Therefore the cover must be removed. In operation, the filling filter functions as a by-pass protection strainer and prevents dirt from entering into the tank when the by-pass valve is open. ort for ventilating filter: The ventilating filter thread connection M x allows assembly of a ventilating filter, which assumes ventilation of the tank. The ventilating filter has to be ordered separately. Filter elements Flow direction from outside to center. The star-shaped pleating of the filter material results in: large filter surfaces low pressure drop high dirt-holding capacities long service life Filter maintenance y using a clogging indicator the correct moment for maintenance is stated and guarantees the optimum utilization of the filter life. age 7
Materials Screw-on cap: Filter head: Filter bowl: Seals: Filter media: Filling filter: olyester, GF-reinforced luminum alloy olyamide, CF-reinforced, electrically conducting NR (FM on request) EXOR MX - inorganic multi-layer microfiber web aper - cellulose web, impregnated with resin olyamide, reinforced; olyester web ccessories Electrical and / or optical clogging indicators are available on request. Dimensions and technical data see catalog sheet.. Ventilating filters with connection thread M x have to be ordered separately. Dimensions and technical data see catalogue sheet. and.. Extension pipes or diffusors on the bowl outlet are available on request. Extension pipe correct extension pipe length ensures oil outlet below minimum oil level and prevents foaming. Characteristics Return filter: Up to l/min / 8. gpm (see Selection Chart, column ). The nominal flow rates indicated by RGO-HYTOS are based on the following features: closed by-pass valve at ν mm /s / 97 SUS element service life > operating hours at an average fluid contamination of.7 g per l/min /.7 g per gpm flow volume flow velocity in the connection lines. m/s /.8 ft/s Filling filter: Up to l/min /. gpm (see Selection Chart, column ). Connection Threaded ports according to ISO 8 or DIN SE standard J Sizes see Selection Chart, column 9, (other port threads on request). Filter fineness µm(c)... µm(c) β-values according to ISO 889 (see Selection Chart, column and diagram Dx). Dirt-holding capacity Values in g test dust ISO MTD according to ISO 889 (see Selection Chart, column ). 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 / 8 F. Temperature range - C... + C (temporary - C... + C) - F... + F (temporary - F... +8 F) Viscosity at nominal flow rate at operating temperature: ν < mm /s / 8 SUS as starting viscosity: ν max = mm /s / SUS 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 / psi Mounting position referably vertical, outlet downwards. age 8
Diagrams p-curves for complete filters in Selection Chart, column Types w/o filling filter D ressure drop as a function of the flow volume at ν = mm /s / SUS ( = casing empty) ressure drop as a function of the kinematic viscosity at nominal flow Q [gpm].. 9..8. 79..,.,.,.,.,., E 8.7 7..8..9. ν [SUS] 97 8 78 78 7. 8.. 9.. Q [l/min] 8 ν [mm /s] D ressure drop as a function of the flow volume at ν = mm /s / SUS ( = casing empty) Q [gpm].. 9..8. 79.., E.,.,.,.,., 8.7 7..8..9. Q [l/min] ressure drop as a function of the kinematic viscosity at nominal flow ν [SUS] 97 8 78 78 8 ν [mm /s] 7. 8.. 9.. Types with filling filter D ressure drop as a function of the flow volume at ν = mm /s / SUS ( = casing empty) ressure drop as a function of the kinematic viscosity at nominal flow Q [gpm].. 9..8. 79.., 8.7.,.,.,.,., E 7..8..9. ν [SUS] 97 8 78 78 7. 8.. 9.. Q [l/min] 8 ν [mm /s] age 9
D ressure drop as a function of the flow volume at ν = mm /s / SUS ( = casing empty) Q [gpm].. 9..8. 79.., E.,.,.,.,., 8.7 7..8..9. Q [l/min] ressure drop as a function of the kinematic viscosity at nominal flow ν [SUS] 97 8 78 78 8 ν [mm /s] 7. 8.. 9.. 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-ass-Test according to ISO 889 article size x [µm] (for particles larger than the given particle size x) Efficiency [%] The abbreviations represent the following ß-values resp. finenesses: For EXOR MX - and aper elements: EX = β (c) = EXOR MX 7EX = β 7 (c) = EXOR MX EX = β (c) = EXOR MX EX = β (c) = EXOR MX = β (c) = aper ased on the structure of the filter media of the paper elements, deviations from the printed curves are quite probable. For screen elements: S = screen material with mesh size µm S = screen material with mesh size µm S = screen material with mesh size µm Tolerances for mesh size according to DIN 89. For special applications, finenesses differing from these curves are also available by using special composed filter media. age
Selection Chart art No. Return filter Filling filter ressure drop see Diagram D/curve No. Dirt-holding capacity Filter fineness see diagr.dx Filter finenes filling filter / by-pass protection strainer Filter surface filling filter / by-pass protection strainer Connection Cracking pressure of by-pass Symbol Replacement filter element art No. l/min l/min g µm cm bar kg Ventilating filter thread connection M x Weight 7 8 9 E -9 8 - D/ EX 9 - - G¼. V7.8- -.7 E - - D/ EX - - G¼. V7.8- -.7 E -8 9 - D/ EX - - G¼. V7.8-8 -.7 E - - D/ - - G¼. 7.8- -.7 E -9 8 D/ EX 9 8 G¼. K7.8-. E - D/ EX 8 G¼. K7.8-. E -8 9 D/ EX 8 G¼. K7.8-8. E - D/ 8 G¼. K7.8-. E -9 - D/ EX - - G¼. V7.8- -. E - - D/ EX 7 - - G¼. V7.8- -. E -8 - D/ EX 7 - - G¼. V7.8-8 -. E - - D/ - - G¼. 7.8- -. E -9 D/ EX 8 G¼. K7.8-. E - D/ EX 7 8 G¼. K7.8-. E -8 D/ EX 7 8 G¼. K7.8-8. E - D/ 8 G¼. K7.8-. referred type, no minimum order quantity required t mm /s (ISO VG at ca. C / 9 F) aper media supported with metal gauze Open connection for ventilating filter. lease assemble ventilating filter before operating. Remarks ll filters are delivered with a plugged clogging indicator connection M x.. s 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 - has to be supplied with an extension pipe for a mounting depth of mm. Order description: E - / EV art No. (asic unit) Extension pipe ( various lengths are available on request) E : EV, EV, EV, EV E : EV, EV, EV, EV For the appropriate ventilating filters with M x thread connection see catalogue sheet. and., for the appropriate clogging indicators see catalog sheet.. 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 ). 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. age
Selection Chart art No. Return filter Filling filter ressure drop see Diagram D/curve No. Filter fineness see diagr.dx Dirt-holding capacity Filter finenes filling filter / by-pass protection strainer Filter surface filling filter / by-pass protection strainer Connection / Cracking pressure of by-pass Symbol Replacement filter element art No. gpm gpm g µm inch SE psi lbs Remarks Ventilating filter thread connection M x Weight 7 8 9 E -79. - D/ EX 9 - - - /- V7.8- -.7 E -7 7. - D/ EX - - - /- V7.8- -.7 E -78. - D/ EX - - - /- V7.8-8 -.7 E -7. - D/ - - - /- 7.8- -.7 E -89.. D/ EX 9 - /- K7.8-. E -8 7.. D/ EX - /- K7.8-. E -88.. D/ EX - /- K7.8-8. E -8.. D/ - /- K7.8-. E -79. - D/ EX - - - /- V7.8- -. E -7 8. - D/ EX 7 - - - /- V7.8- -. E -78 8. - D/ EX 7 - - - /- V7.8-8 -. E -7 8. - D/ - - - /- 7.8- -. E -89.. D/ EX - /- K7.8-. E -8 8.. D/ EX 7 - /- K7.8-. E -88 8.. D/ EX 7 - /- K7.8-8. E -8 8.. D/ - /- K7.8-. referred type, no minimum order quantity required t 97 SUS (ISO VG at approx. C / 9 F) Corresponds to /8- UN- Corresponds to /- UN-, plugged with locking screw aper media supported with metal gauze Open connection for ventilating filter, please assemble ventilating filter before operating ll filters are delivered with a plugged clogging indicator connection M x. mm. s 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 -7 has to be supplied with an extension pipe for a mounting depth of mm (resp. 9.9 inch). Order description: E -7 / EV art No. (asic unit) Extension pipe ( various lengths are available on request) E : EV (.8 inch), EV (. inch), EV (.7 inch), EV (8. inch) E : EV (7.9 inch), EV (9.9 inch), EV (. inch), EV (. inch) For the appropriate ventilating filters with M x thread connection see catalog sheet. and., for the appropriate clogging indicators see catalog sheet.. 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 ). 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. age
Dimensions Version without connection for ventilating filter Version with connection for ventilating filter Z I+(EV-K) N S Ventilating filter (not included in basic equipment) H G Ø E F Q H G ØE F U O-ring (included in basic equipment) Ø D Ø C EV K ØD ØC Dia hole in reservoir R Extension pipe on request Version with connection Connection M x. for clogging indicator O 9º 9º 9º X O O Required mounting surface L M W L C M N N W M Versions with connections on request 9º Connection M x with ventilating filter V N For dimension EV see selection chart N Y M Measurements in mm Type C min./max. D E F G H I K L M N O E G¼ G 8/ 9. 7 E G¼ G 8/ 9. 7 7 Type Q R S U V W X Y Z E 8. 8 7 8 E 8. 7 7 8 Measurements in inch Type C min./max. D E F G H I K L M N O E - -.9./.7.7.9....8 8.9...99. E - -.9./.7.7.9... 7.9....99. Type Q R S U V W X Y Z E.8.9...7.9.7.7. E.8.9...7.9.7.7. Corresponds to /8 - UN- Corresponds to / - UN- age
Symbols T T Spare arts 7 os. Designation art No. Screw-on cap with valve E. (. bar / psi) and os. Screw-on cap with valve E. (. bar / psi) and os. O-ring N7. x mm.9 x. inch Replacement filter element see Chart / col. Filter bowl E * E.9 Filter bowl E * E.9 O-ring N7.9 9 x mm. x. inch O-ring N7. x mm.9 x. inch 7 Connection for ventilating filter (incl. O-ring x mm /. x. inch) E.9 *Specify mounting depth (EV) in mm The functions of the complete filters as well as the outstanding features of the filter elements assured by RGO-HYTOS can only be guaranteed if original RGO-HYTOS spare parts are used. Quality ssurance Quality management according to DIN EN ISO 9 To ensure constant quality in production and operation, RGO-HYTOS filter elements undergo strict controls and tests according to the following ISO standards: ISO 9 ISO 9 ISO 9 ISO 98 ISO 889 ISO 8 Verification of collapse / burst pressure rating Verification of fabrication integrity (ubble oint Test) Verification of material compatibility with fluids Evaluation of pressure drop versus flow characteristics Multi-ass-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. RGO-HYTOS is not responsible for any unintentional mistake in this specification sheet. age