Hydraulic Fluids. Note: For use with hydraulic fluids other than those listed above, please consult your Yuken representatives in advance.
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- Camron Mosley
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1 Hydraulic Fluids Fluid Types Any type of hydraulic fluids listed in the table below can be used. Petroleum base oils Use fluids equivalent to ISO VG 32 or VG 46. Use phosphate ester or polyol ester fluid. When phosphate ester fluid is used, Synthetic fluids prefix "F-" to the model number because the special seals (fluororubber) are required to be used. Water containing fluids Use water-glycol fluid. Note: For use with hydraulic fluids other than those listed above, please consult your Yuken representatives in advance. Recommended Fluid Viscosity and Temperature Use under conditions where the viscosity and temperature of the hydraulic fluid remain in the ranges indicated in the following table. Name Direct Type Pilot Operated Low Noise Type Pilot Operated Solenoid Controlled Low Noise Type Solenoid Controlled H Type Pressure Control Valves HC Type Pressure Control Valves Pressure Reducing Valves Pressure Reducing and Check Valves Pressure Reducing and Relieving Valves Unloading Brake Valves Viscosity 5-4 mm 2 /s (88-8 SSU) Temperature C (5-58 F) Semiconductor Type Pressure Switches Control of Contamination 5-4 mm 2 /s (88-8 SSU) C ( F) If the valve is provided with a vent ristrictor (ex. : A-G-3), the viscosity range should be 5-2 mm 2 /s (8-9 SSU). Due caution must be paid to maintaining control over contamination of the hydraulic fluids which may otherwise lead to breakdowns and shorten the life of the valves. Please maintain the degree of contamination within NAS 6-Grade 2. Use 25 µm or finer line filter. Interchangeability in Installation between Current and New Design Model change has been made on the following products. The difference between current and new design has been described on the paragraph of Interchangeability in Installation between Current and New Design. Refer to relevant pages on each series. Name Current New Interchangeability Main Changes Page Solenoid Controlled Relief Valve Low Noise Type Solenoid Controlled Relief Valve -3, -47-6, -47 -, -47 S-G-3, - S-G-6, - S-G-, - -3, -48-6, -48 -, -48 S-G-3, -53 S-G-6, -53 S-G-, -53 Yes Yes Pilot valves (DSG-) have been changed in the design numbers Pressure Controls
2 PRESSURE CONTROLS This valve is used as a remote control valve for pilot operated type pressure control valves. Specifications ed DT-- DG-- Max. Operating Pres. 25 (363) Approx. Mass DT type DG type.6 (3.5).4 (3.) C Model Number Designation F- D Special Seals Series Number T Type of - Valve - Design Number Design Standards Remote Control F: Special Seals for Phosphate Ester Type Fluids (Omit if not required) D: Remote Control T: ed G: None: Japanese Std. "JIS" 8: European Design Std. 9: N. American Design Std. None: Japanese Std. "JIS" and European Design Std. 9: N. American Design Std. Instructions To adjust the pressure, loosen the lock nut and turn the handle slowly clockwise for higher pressures or anti-clockwise for lower pressures. After adjustments, do not forget to tighten the lock nut. Piping of the tank line should not be connected to any tank line of the other valves, but connected directly to the reservoir. Pressure is limited by collars fitted. If a working pressure cannot be attained, remove some collars. One collar is equivalent to MPa (4 PSI). If the internal volume of the vent line is too large, chattering is likely to occur. Graphic Symbol Attachment bolts Socket Head Cap Screw Qty. Japanese Std. "JIS" and European Design Std. N. American Design Std. DG- M5 45 Lg. No.-24 UNC -3/4 Lg. 4 Japanese Standard "JIS" European Design Standard N. American Design Standard Approx. Mass DG- DGM-2-2 Rc /4 DGM-2-28 /4 P.F DGM-2-29 /4 NPT.7 (.5) s are available. Specify the sub-plate model number from the table above. When sub-plates are not used, the mounting surface should have a good machined finish. 23
3 DT--/8/9 Lock Nut 4(.55) Hex. DIMENSIONS IN MILLIMETRES (INCHES) Two Collars 26(.2) DT-- Rc /4 DT--8 DT--9 /4 P.F /4 NPT 93(7.6) 4.5 (5.57) Dimensions of The Panel Hole Max. (.39) 47(.85) 26(.2) 44(.73) 2(.83) 74 (2.9) Tank Port Lock Nut 24(.94) Hex. DG--/9 : DGM-2-2/28/29 7 (.28) 9 (.75) 3 (.8) 5.5(.) Through 9(.35) Spotface 4 Places 6 (2.36) Lock Nut 4(.55) Hex. Two Collars 3 (.8) 27 (.6) 5 (.59) 2(.8) (.39) 6.2(.24) (From Rear) 2 Places 7.5 (.3) 24 (.94) 7 (.67) 4 (.55) (.) 44(.73) 3.5 (.53) Tank Port (.39) 9 (.75) (.) 65 (2.56) 8 (3.5) 42.5(5.6) (3.94) "B" Thd. (.39) Deep 4 Places 47 (.85) (.) 37 (.46) 26 (.2) 48 (.89) 7(.28) Through (.43) C' bore 2 Places Surface (s Furnished) "B" Thd. DGM-2-2 DGM-2-28 Rc /4 /4 P.F M5 DGM-2-29 /4 NPT No. -24 UNC 24
4 PRESSURE CONTROLS Spare Parts List DT--/8/ List of Seals Item 3 4 Name of Parts Part SO-NA-P2 SO-NB-P.4 Qty. Note: When ordering the seals, please specify the seal kit number from the table below. C Remote Control List of Seal Kits Valve DT- DG- Seal Kit KS-DT-- KS-DG-- DG--/ List of Seals Item Name of Parts Part Qty. 2 SO-NA-P9 SO-NB-P9 2 Note: When ordering the seals, please specify the seal kit number from the table above
5 Direct Type This valve is used in a hydraulic circuit to prevent damage due to over pressure and to adjust the maximum circuit pressure of small capacity. Specifications ed Max. Operating Pressure Pres. Adj. Range Max. Flow L/min Approx. Mass (U.S.GPM) DT type DG type 6 (4.23).5 (3.3) DT-2- - DG (3) Note).5 (3.3) Note: Refer to the Model Number Designation. Model Number Designation F- Special Seals F: Special Seals for Phosphate Ester Type Fluids (Omit if not required) D Series Number D: Direct Type T Type of T: ed G: Refer to the Minimum Adjustment Pressure Characteristics. -2 Valve 2 -B - Pres. Adj. Range B: -7 ( -2) C: (5-23) H: 7-2 (2-3) Design Number Design Standards None: Japanese Std. "JIS" 8: European Design Std. 9: N. American Design Std. None: Japanese Std. "JIS" and European Design Std. 9: N. American Design Std. Instructions To adjust the pressure, loosen the lock nut and turn the handle slowly clockwise for higher pressures or anti-clockwise for lower pressures. After adjustments, do not forget to tighten the lock nut. Piping of the tank line should not be connected to any tank line of the other valves, but connected directly to the reservoir. Graphic Symbol Attachment bolts Socket Head Cap Screw Qty. Japanese Std. "JIS" and European Design Std. N. American Design Std. DG-2 M5 45 Lg. No.-24 UNC -3/4 Lg. 4 DG-2 Japanese Standard "JIS" European Design Standard N. American Design Standard Approx. Mass DGM-2-2 Rc /4 DGM-2-28 /4 P.F DGM-2-29 /4 NPT.7 (.5) s are available. Specify the sub-plate model number from the table above. When sub-plates are not used, the mounting surface should have a good machined finish. The sub-plates are those for remote control relief valves. For dimensions, see page Direct Type
6 PRESSURE CONTROLS Min. Adjustment Pressure Min. Adjustment Pressure PSI MPa L/min U.S. GPM Flow Rate DT-2- -/8/9 PSI 3 Lock Nut 4(.55) Hex. Nominal Override Characteristics Pressure 2 2 MPa 7.5 DT-2-H DG-2-H 4..5 DT-2-C DG-2-C 7. DT-2-B 3.5 DG-2-B L/min U.S. GPM Flow Rate C Direct Type 26(.2) DT-2- - DT DT Rc /4 /4 P.F /4 NPT 63(6.42) 2 (4.4) Max. (.39) 47 (.85) 26(.2) 44(.73) 2(.83) 74 (2.9) Lock Nut 24(.94) Hex. Tank Port 7 DIMENSIONS IN MILLIMETRES (INCHES) 9(.75) 5.5(.) Through 9(.35) Spotface 4 Places Lock Nut 4(.55) Hex. 44(.73) (.39) Tank Port 6(6.42) (3.94) 47 (.85) (.) 26 (.2) 48 (.89) 2. Hydraulic fluid 2 Viscosity : 35 mm /s (64 SSU) Specific Gravity :.8 Dimensions of The Panel Hole DG-2- -/9 37 (.46) (.28) Surface (s Furnished) Note: For dimensions of the valve mounting surface, see the dimensional drawing (page 24) of the subplate used together. Direct Type 27
7 Spare Parts List DT-2- -/8/9 DG-2- -/ List of Seals Item Name of Parts Part Qty. Remarks SO-NB-P9 SO-NA-P2 SO-NB-P.4 2 Use only for DG-2 Note: When ordering the seals, please specify the seal kit number from the table below. List of Seal Kits Valve DT-2 DG-2 Seal Kit KS-DT-- KS-DG-2-28 Direct Type
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