Directional Valves Brochure

131E 7.407.1.0/03.12Breather Dryer BDE1. TECHNiCAL SPECiFiCATiONS1.1 DEFiNiTiON OF THE PrObLEmIn hydraulic and lubrication systems, water ingress into the tank is a familiar problem. System operators are constantly faced with high breakdown and maintenance costs that can be traced back to water in the system. This is because water, even in its dissolved state, causes accelerated degradation of the additive components by hydrolysis. These reactions cause the oil to lose its desired characteristics and to age more rapidly. The depletion of the additives also leads to increased oxidation in the base fluid. Water also has serious and adverse effects on the operating system components, damaging them by corrosion and hydrogen embrittlement.1.2 FiLTEr HOUSiNGConstruction The distinctive feature of the breather dryers BDE is that it has two separate chambers which can be filled with two desiccants, which in combination increase total water retention (two-stage dewatering). As an option, and as a special protection of the desiccant, four valves are built into the bottom of the unit so that during system downtime the desiccants will not become saturated.A check valve is available as an option to prevent exhaust air from the tank/transmission from flowing back through the desiccant. This means the desiccant is protected from oil mist and there is no re-drying of exiting air. 1.3 FiLTEr mEDiUmThe built-in pleated air filter element (absolute filtration of particles > 2 µm) provides the filter with a very high contamination retention capacity (26g). In order to ensure reliable function, the entire cartridge must be replaced. When the filter is due to be changed, the colour changes from dark red to light orange.1.5 SEALSNBR (= Perbunan)1.6 SPECiAL mODELS AND ACCESSOriESOn request1.7 SPArE PArTSSee Original Spare Parts List1.8 CErTiFiCATES AND APPrOVALSOn request1.9 COmPATibiLiTY WiTH HYDrAULiC FLUiDS iSO 2943The filter cartridge actively prevents contamination particles and humidity from entering the tank. Compatible with mineral oils and bio oils. Caution: The new BDE is not suitable as a breather for reservoirs containing highly flammable liquids (e.g. fuel, solvents, etc...)1.4 FiLTEr SPECiFiCATiONS Temperature range -30 °C to +100 °C Storage temperature: -40 °C to +100 °C Material of filter housing Plastic (PA, PC and POM)Material of filter cartridge unit Combination of 2 different desiccantsMaterial of air filter element phenolic resin impregnated paperbDE 200E 7.407.1.0/03.121.10 CHANGiNG iNTErVALSWhen the filter is due to be changed, the colour changes reliably from dark red to light orange.Symbol: bDE with valvesInlet Ambient airbDE 400 bDE 1000Outlet Ambient airOutlet Tank - Gearboxair filter 2µmdesiccant Adesiccant BSymbol: bDE without valvesInlet Ambient airOutlet Tank - Gearboxair filter 2µmdesiccant Adesiccant B132E 7.407.1.0/03.12bDE 400 G 2 W 1 . X /-rV0.02Filter type BDESize of filter 200, 400, 1000Type of connection F Flange (to DIN 24557) G Thread N Thread NPT M Thread metric S Slip fitFiltration rating in µm 2 2 µm absoluteType of clogging indicator W without port, no clogging indicator K pressure gauge UBM vacuum indicatorType code (TKZ) Type code Thread connection GThread connection NThread connection MSlip fit connection SFlange connection F1 1BSP NPT 1" M42x2 1" T22 – NPT 2" – – –Modification number X the latest version is always suppliedSupplementary details ELF with filler strainer (only for connection type F = Flange) RV0.02 check/protection valve with 0.02 bar pressure setting RV0.003 check/protection valve with 0.003 bar pressure setting2.2 rEPLACEmENT CArTriDGEbDE 400 X 2 W 0 . XFilter type BDE Size 200, 400, 1000Connection type X replacement cartridgeFiltration rating 2 2 µm absoluteType of clogging indicator W without port, no clogging indicator K pressure gauge UBM vacuum indicatorType code 0 replacement cartridgeModification number X the latest version is always supplied2. mODEL CODE (also order example)2.1 COmPLETE FiLTEr133E 7.407.1.0/03.124. DimENSiONS3. FiLTEr CALCULATiON / SiZiNG3.1 SiZiNG GUiDELiNESThe rate at which contamination enters a hydraulic system can be considerably reduced by using efficient tank breather filtration.CAUTiON:Incorrectly sized tank breather filters can place additional strain on the system and reduce the service life of hydraulic filter elements.3.2 SiZiNG / Air FLOW rATEThe following table indicates the size of BDE filters for gearbox lubrication in wind power plants (According to size in megawatts).= 1 MW1-3 MW= 3 MWStandard conditions200 400 1000Longer service life/ service intervals400 1000 2x1000Very humid climate400 1000 2x1000Additional information on sizing criteria:Size Optimum air flow rate * [l air / min]Max. drying capacity for average humidity[m³ air]Max. drying capacity for high humidity[m³ air]200 10 10 6400 20 25 151000 35 42 25* Air flow rate with the highest drying efficiency3.3 WATEr rETENTiON CAPACiTYSize Maximum water retention capacity200 0.25 l400 0.50 l1000 0.75 lType Weight (kg)BDE 200 1.7BDE 400 2.3BDE 1000 3.0Connection Thread length B [mm]AF width SW [mm]1" Slip fit connection Ø 33.418 50G 1" 18 50M42 x 2 18 50NPT 1" 18 50NPT 2" 24 65Flange adapter DIN24557/Pt 220 50134E 7.407.1.0/03.12NOTEThe information in this brochure relates to the operating conditions and applications described. For applications or operating conditions not described, please contact the relevant technical department. Subject to technical modifications.HYDAC FiLTErTECHNiK GmbH Industriegebiet D-66280 Sulzbach/Saar Tel.: 0 68 97 / 509-01 Fax: 0 68 97 / 509-300 Internet: www.hydac.com E-Mail: filter@hydac.comNOTES