RFM S & RFM Set Series - Inside Tank Return Line Fitters Brochure

Low Pressure FiltersINNOVATIVE FLUID POWER83Features• Unique design allows filter to be installed completely inside of the reservoir tank. This saves space, protects the filter, reduces leak points and reduces overall installation cost.• Lightweight unit requiring no filter head reduces pressure drop while decreasing cost.• Excellent option for low overhead clearance applications.• Allows pre-filtration of new make-up oil assuring cleanliness of system.• Contamination Basket prevents filtered contamination from re-entering the tank during element changeout on 330 & 500 size models.• Simplifies element changeout procedure in the field.• RFM Set configuration (tank plenum) allows for multiple returns to enter plenum without manifolding.InstallationRFM...SET: Inside Tank Filters are installed into a separate chamber (see tank cutaway to the right) built into the reservoir tank via the filter ring and 4 bolts. More than one filter may be installed in the chamber if required for capacity. This procedure will require a hole to be cut into the top of the reservoir tank and an access cover fastened to the tank for each filter installed. The inlet piping for return should be connected through the tank wall into the separate chamber. A clip installed on the filter ring holds the element in place during filtration operations, and facilitates easy removal for element change out. A static pressure clogging indicator, to warn of high upstream pressure (element clogged), can be attached to the access cover. For additional information, consult factory.RFM...S: Inside Tank Filters are installed to the top of the tank by welding the inner chamber to the tank cover (see tank cutaway to the right). This procedure will require a hole to be cut into the top of the reservoir tank and an access cover fastened to the tank. A smaller hole must be cut somewhere in the tank for the return line piping to pass through. The hole located in the side of the inner chamber must be directed towards the return line piping. The inlet piping for return should then be welded through the tank wall and to the inner chamber. The spring located between the element and the access cover provides force to hold element in place during filter operation. A static pressure indicator to warn of high upstream pressure, and if element is clogged can be attached to the access cover. Multiple filters can be installed in the tank. For additional installation information, consult factory.RFM...S & RFM...Set SeriesInside Tank Return Line Filters 145 psi • up to 132 gpmHydraulic SymbolABRFM...S RFM...Set Typical Installation of Both ModelsTechnical DetailsMounting Method See Installation at leftPort Connection Outlet75/165/185330/5001.26” Smooth Port2” NPTFlow Direction Inlet: Side Outlet: BottomConstruction MaterialsChamberBowlRingSteel (75/165/185)PlasticAluminum (330/500)Flow Capacity7516518533050020 gpm (75 lpm)43 gpm (165 lpm)49 gpm (185 lpm)87 gpm (330 lpm)132 gpm (500 lpm)Housing Pressure RatingMax. Operating PressureProof PressureFatigue PressureBurst Pressure145 psi (10 bar)218 psi (15 bar)145 psi (10 bar)> 580 psi (40 bar)Element Collapse Pressure RatingBN/HC, W/HCECO/N, BN/AM, P/HC, AM290 psid (20 bar)145 psid (10 bar)Fluid Temperature Range -22° to 250°F (-30° to 121°C)Fluid Compatability Compatible with all petroleum oils and synthetic fluids rated for use with Fluoroelastomer or Ethylene Propylene seals. Contact HYDAC for information on special housing and element constructions available for use with water glycols, oil/water emulsions, and HWBF.Bypass Valve Cracking Pressure?P = 43 psid (3 bar) +10%?P = 87 psid (6 bar) +10%Low Pressure FiltersINNOVATIVE FLUID POWER 84Model CodeRFM BN/HC 75 S 3 W 1.0 .Series RFM = In-Tank Return Line FilterElement Media BN/HC = Betamicron® (Low Collapse) ECO/N = ECOmicron® (Low Collapse) MM = Mobilemicron (Low Collapse) W/HC = Wire ScreenSize 75 Not available in the SET Style 165 330 500Type of Mounting Connection S = Inside Tank with shroud for welding and spring for element hold-down SET = Inside Tank with Ring for bolt mounting and clip for element hold-downFiltration Rating (micron) 3, 5, 10, 20 = BN/HC, ECO/N 10, 15 = MM 10, 20 = P/HC 25, 74, 141 = W/HCClogging Indicator W = Without Indicator (Indicators are installed on access cover on top of tank) (For additional details and options, see Clogging Indicators section.)Modification Number (latest version always supplied)Seals (omit) = Nitrile (NBR) (standard) V = Fluoroelastomer (FPM)Supplementary Details SO103H = Modification of Elements for use with Phosphate Ester FluidsModel Codes Containing RED are non-stock items — Minimum quantities may apply – Contact HYDAC for information and availabilityReplacement Element Model Code0330 R 010 BN4HC / VSize 0075, 0165, 0330, 0500Filtration Rating (micron) 3, 5, 10, 20 = BN4HC, ECO/N 10, 15 = MM 25, 74, 141 = W/HCElement Media BN4HC, ECO/N, P/HC, W/HC, MMSupplementary Details (omit) = standard V = Fluoroelastomer (FPM) sealsLow Pressure FiltersINNOVATIVE FLUID POWER85Size 75 S 165 S 330 S 500 S 330 Set 500 SetWeight (lbs.) 1.81 2.24 4.42 4.88 4.41 4.85Dimensions shown are for general information and overall envelope size only. Weights listed are without element. For complete dimensions please contact HYDAC to request a certified print.Dimensions RFM…S RFM…SetMounting PatternRFM 758.78”(223mm)RFM 16513.25”(338mm)RFM 33011.3”(288mm)RFM 50014.5”(369mm)RFM 75 / 165ø 4.0”(102.5mm)RFM 330 / 500ø 6.10”(155mm)4.8"(122 mm)7.17"(183 mm)Size 3306.9"(175 mm)Size 50010.0"(256 mm)7.2"(183 mm)ChamberRingBowlø 5.04”(128mm)6.53”(166mm)ø 0.43”(11mm)RFM 758.78”(223mm)RFM 16513.25”(338mm)RFM 33011.3”(288mm)RFM 50014.5”(369mm)RFM 75 / 165ø 4.0”(102.5mm)RFM 330 / 500ø 6.10”(155mm)4.8"(122 mm)7.17"(183 mm)Size 3306.9"(175 mm)Size 50010.0"(256 mm)7.2"(183 mm)ChamberRingBowlø 5.04”(128mm)6.53”(166mm)ø 0.43”(11mm)Low Pressure FiltersINNOVATIVE FLUID POWER 86Sizing InformationTotal pressure loss through the filter is as follows:Assembly ?P = Housing ?P + Element ?PHousing Curve:Pressure loss through housing is as follows:Housing ?P = Housing Curve ?P x Actual Specific Gravity 0.86Adjustments must be made for viscosity & specific gravity of the fluid to be used (see sizing section on page 19)Element K Factors?P Elements = Elements (K) Flow Factor x Flow Rate (gpm) x Actual Viscosity (SUS) x Actual Specific Gravity (From Tables Below) 141 SUS 0.86Size...R...MM10 µm 15 µm0075 0.265 0.1660165 0.146 0.0910330 0.078 0.0490500 0.052 0.032Size…R…ECO/N3 µm 5 µm 10 µm 20 µm0165 0.674 0.369 0.321 0.2200330 0.228 0.156 0.135 –Size...R...P/HC (Paper)10, 20 µm0075 0.1560165 0.0860330 0.0370500 0.024Size…R…W/HC (Wire Screen)25, 50, 74, 100, 149, 200 µm0075 0.0430165 0.0200330 0.0100500 0.007Size...R...BN4HC (Betamicron® Low Collapse)3 µm 5 µm 10 µm 20 µm0075 1.209 0.780 0.445 0.2410165 0.616 0.430 0.245 0.1330330 0.232 0.150 0.093 0.0660500 0.162 0.104 0.069 0.044All Element K Factors in psi / gpm.