E SERIES. Specification. E Series. Relief and Flow Control Valves O M O M EIC-H Model No. Description

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1 4 Ω-1 Ω Series Proportional Electro-ydraulic This relief and flow control valve is an energy-saving valve that supplies the minimum pressure and flow necessary for actuator drive. Since this valve controls the pump pressure by following the load pressure while keeping the differential pressure minimized, it servers as a low power-consumption energy-saving, metre-in, controlled flow control valve. Further, since a temperature compensation function is incorporated, this valve provides consistent flow control irrespective of the fluid temperature. E SERIES EI--15- Specification Description Model No. EFBG EFBG-6-25 Max. Operating Kgf/cm Max. Flow L/min Metred Flow Adjustment Range L/min Flow ontrols Rated urrent ma oil Resistance Ω Differential Kgf/cm ysteresis 7% or Less 7% or Less Repeatability 1% or Less 1% or Less Graphic Symbols A ontrols Pres. Adj. Range Kgf/cm 2 : : Rated urrent ma : 71 :77 : : : 69 : 73 oil Resistance Ω 1 1 ysteresis 3% or Less 3% or Less Repeatability 1% or Less 1% or Less Approx. Mass Kg. Refer to Dim. Drawing. *1: The rating for pressure controls is applied to models with proportional pilot relief valve. (Ex. EFBG ) *2: Adjustment range of the valves without proportional pilot relief valves is from a minimum adjustable pressure to 25 Kgf/cm 2. V V O M O M P With Proportional Pilot Relief Valve A Y T Y 4Ω-1Ω Series Proportional Electro- ydraulic Relief and Flow ontrol T 4Ω-1Ω Series Proportional Electro-ydraulic P Without Proportional Pilot Relief Valve 1

2 Model Number Designation EFB G Series Type of Valve Max. Metred Flow Proportional Pilot Relief Valve Design Number Mounting Size Adjustment Range Number EFB: Proportional Electro ydraulic Relief and Flow ontrol Valve Attachment Mounting Bolts G: Mounting Applicable Power Amplifiers : 125,: See Specifications 15 None: 6 25 : 25 Without Proportional Pilot Relief Valve 15 Valve Model Number Socket ead ap Screw Qty. Bolt Kit Ordering ode EFBG-3 M1 x 1 Lg. 4 BKBG-3-15 EFBG-6 M16 x 13 Lg. 4 BKBG-6-15 For stable Performance, it is recommended that YUKEN s applicable power amplifiers be used. Model Numbers EFBG EFBG Valve Model Number EFBG-3 EFBG-6 Model Number EFBGM-3Y-18 EFBGM-3Z-18 Power Amplifier Model Numbers For Flow ontrol AME-D-S- -4 AME-DF-S- -22 AME-T-S- -22 PW PW1- -11, AME-D Piping Size 3/4 BSP.F 1 BSP.F For Pres. ontrol --- Mass Kg. EFBGM-6X-18 1 BSP.F 12.5 EFBGM-6Y /4 BSP.F 16 6 s are available. Specify sub-plate model from the table above. When sub-plates are not used, the mounting surface should have a good machined finish. Instructions 2 Drain Back heck that the drain back pressure does not exceed 2 Kgf/cm 2 When Relief Valve Passing is Low in ontrol State To avoid preselected pressure instability, use a passing flow rate of 1 or higher for nominal sizes 3 and 6. Further, check that the tank-line back pressure does not exceed 5 Kgf/cm 2 Safety Valve Setting The safety valve is preset to a pressure that is 2 Kgf/cm 2 higher than the maximum adjustment pressure. Therefore, adjust this pressure setting as needed to suit the pressure used. To lower the pressure setting, turn the safety valve pressure adjustment screw anti-clockwise. After adjustment, be sure to tighten the lock nut. 4Ω-1Ω Series Proportional Electro-ydraulic

3 Model with Proportional Pilot Relief Valve EFBG Adjustment 1 ex. Soc. Air Vent Fully Extended Inlet Port "P" able Departure able Applicable: Outside Dia mm onduction Area... Not Exceeding 1.5 mm² The direction can be altered to every 9 degree angles. able Departure able Applicable: Outside Dia mm onductor Area... Not Exceeding 1.5mm² Outlet Port "A" Drain Port "Y" onnector Dia. x Thru Dia. Spotface Tank Port "T" Manual Flow Adj. Screw M4 Thd. (internal Thd.) Vent Port "V" onnector The Direction can be altered to 9 degree angle Manual Adj. Screw Mounting Surface (O-Ring Furnished) Model without Proportional Pilot Relief Valve 174 EFBG Fully Extended Two Locating Pins 6 Dia. Approx. Mass...16 Kg. DIMENSIONS IN MILLIMETRES 4Ω-1Ω Series Proportional Electro- ydraulic Relief and Flow ontrol 1 ex. Adjustment For other dimensions, please refer to the models above. 4Ω-1Ω Series Proportional Electro-ydraulic Approx. Mass...14 Kg. 3

4 7Two Locating Pins E SERIES Model with Proportional pilot Relief Valve EFBG Adjustment inc. 1 ex. The direction can be altered to every 9 degree angles. onnector Fully Extended 217 able Departure able Applicable: Outside Dia mm onductor Area... Not Exceeding 1.5mm² Outlet Port "A" Drain Port "Y" Air Vent 247 Inlet Port "P" able Departure able Applicable: Outside Dia mm onductor Area... Not Exceeding 1.5mm² Air Vent 17.5 Dia. x Thru. 26 Dia. Spotface Tank Port "T" Manual Flow Adj. Screw M4 Thd. (Internal Thd.) Vent Port "V" DIMENSIONS IN MILLIMETRES inc. Manual Adjustment Screw inc Mounting Surface (O-Ring Furnished) 6 Dia. Approx. Mass...3 Kg. Model without Proportional pilot Relief Valve EFBG Fully Extended ex. Adjustment 4Ω-1Ω Series Proportional Electro-ydraulic Approx. Mass...28 Kg. For other dimensions, please refer to the models above.

5 EFBGM- 3Y -18 3Z M1 Thd. x18 Deep 11 Dia. x Thru Dia. Spotface Dia. 3 Places 28.6 DIMENSIONS IN MILLIMETRES 7 Dia. x 7 Deep 2 Places Model No. EFBGM-3Y-18 EFBGM-3Z Dia. x 1/4 BSP.F Thd. ( From Rear) Thread Size A Thd. 3/4 BSP.F 1 BSP.F "A" Thd. 3 Places 6 Dia. 4 1/4 BSP.F Thd. 6X EFBGM Y M16 Thd. x 3 Deep 17.5 Dia. x Thru. 26 Dia. Spotface D B Dia. x 3/8 Thd. (From Rear) Model No. 29 Dia. 3 Places 17.5 Dia. x 1Deep 2 Places Dia. x 1/4 Thd. (From Rear) "E" Thd. 3 Places Dimension mm Thread Size E Thd. B D EFBGM-6X BSP.F EFBGM-6Y /4 BSP.F 4Ω-1Ω Series Proportional Electro- ydraulic Relief and Flow ontrol 4Ω-1Ω Series Proportional Electro-ydraulic 5

6 Step Response (Flow ontrols) These values were measured on independent valves. They vary by circuit 16 EFBG-3 3 EFBG s s Step Response ( ontrols) These values were measured on independent valves. They vary by circuit 22 EFBG-3 22 EFBG-6 18 EFBG EFBG EFBG s 14 1 EFBG s 6 6 Input urrent vs. Flow EFBG-3 EFBG Input urrent ma Input urrent ma 6 4Ω-1Ω Series Proportional Electro-ydraulic

7 Input urrent vs. EFBG-3 EFBG EFBG EFBG EFBG EFBG Input urrent ma Input urrent ma Spare Parts List List of Seals Sl. No. Name of parts Note: When Ordering the seals, please specify the seal kit numbers from the table below. List of Seals Part Numbers EFBG-3 Qty. EFBG-6 1 O-Ring SO-NB-P O-Ring SO-NA-P1A O-Ring SO-NB-P O-Ring SO-NB-P O-Ring SO-NB-P O-Ring SO-NA-P O-Ring SO-NB-P O-Ring SO-NB-P3-1 9 O-Ring SO-NB-G O-Ring SO-NB-P O-Ring SO-NB-P O-Ring SO-NB-P O-Ring SO-NB-P44-1 Model numbers EFBG-3-15 EFBG-6-15 Seal Kit Numbers KS-EFBG-3-15 KS-EFBG Ω-1Ω Series Proportional Electro- ydraulic Relief and Flow ontrol 4Ω-1Ω Series Proportional Electro-ydraulic 7

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