REDUING (ND HEK) VLVES RT/RG RT/RG -3// (3/8, 3/, -/) Threaded onnections / Mounting Up to MPa (5 PSI), 5 L /m in (3 U.S.GPM) Pub. E-3 Pressure Reducing Valves Pressure reducing valves are used to set the pressure of a hydraulic circuit below that of the main circuit. In addition, operation under remote control is possible by using the remote control port. Pressure Reducing and heck Valves Pressure reducing and check valves are used to set the pressure of a hydraulic circuit below that of the main circuit. They have check valves, which allow a free flow from the secondary side to the primary. Operation under remote control is also possible by using the remote control port. Hydraulic Fluids Fluid Types ny type of hydraulic fluid listed in the table below can be used. Petroleum base oils Use fluids equivalent to ISO VG 3 or VG. Synthetic fluids Use phosphate ester or polyol ester fluid. When phosphate ester fluid is used, 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 hy draulic fluids other than those listed above, please consult y our Yuken representatives in advance. Recommended Viscosity and Oil Temperatures Viscosity ranging between 5 - mm /s (77-8 SSU). Oil temperatures between -5/+7 (5-58 F). Use hydraulic fluids which satisfy the recommended viscosity and oil temperatures given above. ontrol of ontamination 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 NS 38- Grade. Use 5 µm or finer line filter. No.
Specifications Valve Name Pressure Reducing Valve Pressure Reducing and heck Valve Threaded onnection RT-3- - RT-- - RT-- - Mounting RG-3- - RG-- - RG-- - RT-3- - RG-3- - RT-- - RG-- - RT-- - RG-- - Pressure Reducing (and heck) Valves RT/RG RT/RG -3// Specifications / Model Number Designation Max. Operating Pressure MPa (PSI) (5) (5) (5) (5) (5) (5) Max. Flow Setting Pressure MPa (PSI).7 -. ( - ). -.5 ( - 97).7 -. ( - ). -.5 ( - ).5 -.5 ( - 97).7 -. ( - ). -.5 ( - ).5 -.5 ( - 5).5 -.5 ( 5-97).7 -. ( - ). -.5 ( - 97).7 -. ( - ). -.5 ( - ).5 -.5 ( - 97).7 -. ( - ). -.5 ( - ).5 -.5 ( - 5).5 -.5 ( 5-97). The max. flow rates are those shown at the primary pressure at MPa (5 PSI).. The drain flow rates are equal to pilot flow rates when differential pressure between primary and secondary pressure is at.5 MPa (97 PSI). Max. Flow L/min (U.S.GPM) (.) 5 (3.) 5 (3.) (.) 5 (33.) (3.3) 8 (7.5) (58.) 5 (.) (.) 5 (3.) 5 (3.) (.) 5 (33.) (3.3) 8 (7.5) (58.) 5 (.) Drain Flow L/min (U.S.GPM).8 -. (. -.).8 -. (. -.9). -.5 (.3 -.).8 -. (. -.).8 -. (. -.9). -.5 (.3 -.) Threaded onnection pprox. Mass kg (lbs.).3 ( 9.5).9 ( 5.). (.5).8 (.) 7.8 ( 7.) 3.8 (.) Graphic Symbols RT / RG Mounting.5 ( 9.9).8 ( 5.). (.3) 5. (.9) 8. (7.9) 3.8 (.) Yuken can offer flanged connection valves described below. For details, contact us. RF/RF-- - RF/RF-- - Max. Operating Pressure MPa (PSI) (5) Max. Flow L/min (U.S.GPM) 5 () 5 (3) Remote control connection RT / RG Remote control connection Model Number Designation F- R Special Seals F: Special Seals for Phosphate Ester Type Fluids (Om it if not required) Series Number R: Pressure Reducing Valves R: Pressure Reducing and heck Valves T Ty pe of Mounting T: Threaded onnection G: Mounting T: Threaded onnection G: Mounting -3 -B Valve Size 3 3 3 3 Pres. dj. Range MPa (PSI) B:.7-7 (-) : 3.5- (5-) H: 7-.5 (-97) - Design Number Design Standards None: Japanese Std. "JIS" 8 : European Design Std. 9 : N.merican Design Std. None: Japanese Std. "JIS" 8 : European Design Std. 9 : N.merican Design Std. No.
Pressure Reducing (and heck) Valves RT/RG RT/RG -3// ttachment / / Instructions ttachment Mounting bolts Valve Model Numbers RG-3 RG- RG- RG-3 RG- RG- Socket Head ap Screw Japanese Std. "JIS" and European Design Std. M 5 Lg. M 5 Lg. M 5 Lg. M 7 Lg. M 8 Lg. M 9 Lg. N. merican Design Std. 3/8- UN Lg. 3/8- UN Lg. 3/8- UN Lg. 3/8- UN -3/ Lg. 3/8- UN 3-/ Lg. 3/8- UN 3-/ Lg. Qty. Valve Model Numbers RG RG -3 RG RG - RG RG - Japanese Standard "JIS" HGM-3- HGM-3X- HGM-- HGM-X- HGM-- HGM-X- Thread Size Rc 3/8 Rc / Rc 3/ Rc Rc -/ Rc -/ European Design Standard HGM-3-8 HGM-3X-8 HGM--8 HGM-X-8 HGM--8 HGM-X-8 Thread Size 3/8 BSP.F / BSP.F 3/ BSP.F BSP.F -/ BSP.F -/ BSP.F N. merican Design Standard HGM-3-9 HGM-3X-9 HGM--9 HGM-X-9 HGM--9 HGM-X-9 Thread Size 3/8 NPT / NPT 3/ NPT NPT - -/ NPT pprox. Mass kg (lbs.). (3.5). (5.3) 3. (.).8 (.) 5.7 (.) 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. Instructions To adjust the pressure, loosen the lock nut and turn the pressure adjustment handle slowly clockwise for higher pressures and anti-clockwise for lower pressures. fter adjustments, do not forget to tighten the lock nut. onnect the drain port directly to the tank in which case the pressure at the drain port should be kept at a low back pressure close to the atmospheric pressure. There are two threaded connection type primary pressure ports. They can be connected each other in-line; one as an inlet and the other as an outlet or the valve can be used by plugging one of the pressure ports. No.3
RT-3- -/8/9 Pressure Reducing Valves RT-3// (.39) Fully Extended 8(5.83) RT-3- RT-3- - RT-3- -8-9 "" Thd. Rc 3/8 3/8 BSP.F 3/8 NPT / BSP.F / BSP.Tr (.) Design "8" Only "" Thd. 33 (.) (.) 8 (3.3) Remote ontrol Port.5 (.8) 5 (.) (.77) Pressure dj. IN. 8 (.) 8 (.89) 55 (.) (.73) (.55) Hex. 85 (3.35) "" Thd. Outlet Port 3 (.) Inlet Port RT- - -/8/9 Design "8" Only B 8.5 (.73) B Fully Extended "D" Remote ontrol Port "S" Thd..5 (.8) RT-- RT-- - RT-- -8 RT-- -9 RT-- - RT-- -8-9 "S" Thd. MILLIMETRES (INHES) "Q" Thd. "S" Thd. "T" Thd. Rc 3/ 3/ BSP.F 3/ NPT Rc -/ -/ BSP.F - / BSP.F / BSP.F / BSP.Tr / BSP.Tr Pressure dj. IN. "T" Thd. H L J (.77) E K F (.55) Hex. "T" Thd. Outlet Port "Q" Thd. N Inlet Port "Q" Thd. RT- RT- 9 (3.78) 3 (5.) Dimensions mm (Inches) B D E F H J K L N 8 (.89) (.) 3.5 (.) 3 (.9) 9 (5.87) 7 (.57) (.5) 5 (.5) 79 (7.5) (8.5) 97.5 (3.8) (.88) 53.5 (.) (.5) 33 (.) (.57) 9 (.35) (.7) 39 (.5) (.8) No.
RG- 3 - -/8/9 Remote ontrol Port "L" Thd. Mounting Surface (s Furnished) D B 39 (.5) Fully Extended "" Pressure Reducing Valves RG-3// (.77) (.55) Hex. Design "8" Only.5 (.8) F RG-3/- RG-3/- - RG-3/- -8-9 J K "L" Thd. "N" Thd. / BSP.F / BSP.Tr Port connection is not required for RG models but an O-ring should be furnished. Pressure dj. Inlet Port IN. (.3) Through 7.5(.9) Spotface Locating Pin (.) (.) E H "N" Thd. Outlet Port RG-3 RG- (5.59) (5.55) Dimensions mm (Inches) B D E F G H J 5 (.98).5 (.85) 89 (3.5) (.).5 (.75) 5 (.) 7 (.) 79 (3.) 55.5 (.) 79 (7.5) 9. (3.) (.37). (.) (.57) 3.9 (.37) 8 (.89) RG-- -/8/9 9 (5.9) 59.5 (.3) RG-- RG-- - RG-- -8-9 MILLIMETRES (INHES) / BSP.F / BSP.Tr Remote ontrol Port 7.5 (.8) 39 (.5) Fully Extended 7(5.79) Design "8" Only.5 (.8) Port connection is not required for RG models but an O-ring should be furnished. Pressure dj. Inlet Port IN. Mounting Surface (s Furnished) (.77) (.55) Hex. (8.5) (.5) (5.75) 3 (.8) (.3) Through 7.5(.9) Spotface Places Locating Pin (.) (.) 9 (3.) Outlet Port No.5
RT-3- -/8/9 Pressure Reducing and heck Valves RT-3// (.39) Fully Extended 8(5.83) RT-3- RT-3- - RT-3- -8-9 "" Thd. Rc 3/8 3/8 BSP.F 3/8 NPT / BSP.F / BSP.Tr (.) Design "8" Only 33 (.) (.) 8 (3.3) Remote ontrol Port.5 (.8) 5 (.) Pressure dj. IN. "" Thd. 8 (.89) (.73) (.77) 8 (.) 55 (.) (.55) Hex. "" Thd. Outlet Port or Reversed Free Flow Inlet Port RT- - -/8/9 Design "8" Only "T" Thd. B 8.5 (.73) L 85 (3.35) B Fully Extended "D" Remote ontrol Port "S" Thd. J.5 (.8) "S" Thd. 55 (.7) RT-- RT-- - RT-- -8 RT-- -9 RT-- - RT-- -8-9 Inlet Port or Reversed Free Flow Outlet Port "Q" Thd. "S" Thd. "T" Thd. Rc 3/ 3/ BSP.F 3/ NPT Rc -/ -/ BSP.F - / BSP.F / BSP.F / BSP.Tr / BSP.Tr (.77) MILLIMETRES (INHES) Pressure dj. IN. E K F (.55) Hex. H No. "T" Thd. RT- RT- Outlet Port or Reversed Free Flow Inlet Port "Q" Thd. 9 (3.78) 3 (5.) Dimensions mm (Inches) B D E F H J K L N 8 (.89) (.) 3.5 (.) 3 (.9) 9 (5.87) 7 (.57) (.5) 5 (.5) N 79 (7.5) (8.5) 97.5 (3.8) (.88) Inlet Port or Reversed Free Flow Outlet Port "Q" Thd. 53.5 (.) (.5) 33 (.) (.57) 9 (.35) (.7) 8 (.8) 8 (3.39)
RG- 3 - -/8/9 D Remote ontrol Port "N" Thd. E Mounting Surface (s Furnished) Pressure Reducing and heck Valves RG-3// B Fully Extended "" (.77) (.55) Hex. Design "8" Only.5 (.8) H K RG-3/- RG-3/- - RG-3/- -8-9 L "N" Thd. "P" Thd. / BSP.F / BSP.Tr Port connection is not required for RG models but an O-ring should be furnished. Pressure dj. IN. Inlet Port or Reversed Free Flow Outlet Port (.3) Through 7.5(.9) Spotface Locating Pin (.) (.) F J "P" Thd. Outlet Port or Reversed Free Flow Inlet Port RG-3 RG- (5.59) (5.55) Dimensions mm (Inches) B D E F H J K L 59 (.3) 9 (.7) 5 (.98).5 (.85) 89 (3.5) (.).5 (.75) 5 (.) 9 (3.5) 8 (.5) 55 (.) 79 (7.5) 9. (3.) (.37). (.) (.57) 3.9 (.37) 8 (.89) RG-- -/8/9 9 (.9) 59.5 (.3) Remote ontrol Port RG-- RG-- - RG-- -8-9 MILLIMETRES (INHES) / BSP.F / BSP.Tr 7.5 (.8) 79 (3.) Fully Extended 7(5.79) Design "8" Only.5 (.8) Port connection is not required for RG models but an O-ring should be furnished. Pressure dj. IN. Inlet Port or Reversed Free Flow Outlet Port Mounting Surface (s Furnished) (.77) (.55) Hex. (8.5) (.5) (5.75) 3 (.8) (.3) Through 7.5(.9) Spotface Places Locating Pin (.) (.) 3 (5.) Outlet Port or Reversed Free Flow Inlet Port No.7
for Pressure Reducing (and heck) Valves HGM-3-/8/9 HGM-3X-/8/9 MILLIMETRES (INHES) (.39) 9 (3.5) 7 (.7) 3(.5) 7(.8) (.39) Deep For Locating Pin 3 (.) (.3) (.83) 7. (.8) (.39) (.) (.) 8 (3.3). (.8) 3.8 (.5) 35.7 (.).9 (.9) 9 (3.5) 8.8(.35) Through (.55) Spotface.7 (.7) 33.3 (.3) 58.7 (.3).7 (.3) 3.5 (.93) 9.5 (.77) (.) Through (From Rear) "" Thd. (.79) Deep This port is processed because of sharing this subplate with the H/H Type Pressure ontrol Valve and not used for the Pressure Reducing (and heck) Valve. HGM-3- HGM-3X- HGM-3-8 HGM-3X-8 HGM-3-9 HGM-3X-9 "" Thd. Rc 3/8 Rc / 3/8 BSP.F / BSP.F / BSP.F M 3/8 NPT / NPT 3/8- UN No.8
for Pressure Reducing (and heck) Valves HGM--/8/9 MILLIMETRES (INHES) "" Thd. (.79) Deep 5(.) (From Rear) (.87) 3 (.) (.3) (.33) 7 (.8) 7 (.) (.9) (.88) 77 (3.3). (.8). (.) 79. (3.3) 73 (.87) 39.7 (.5).3 (.) 8.8(.35) Through (.55) Spotface.3 (.37) (.39) 9. (.9).5 (.75) 7(.8) (.39) Deep For Locating Pin (.87) (.) HGM-X-/8/9 (.87) "" Thd. (.79) Deep 5(.) Through (From Rear). (.8). (.) 79. (3.3) 73 (.87) 39.7 (.5) (.3) This port is processed because of sharing this subplate with the H/H Type Pressure ontrol Valve and not used for the Pressure Reducing (and heck) Valve. (.77) (.3).3 (.37) (.9) 3 (5.35) (5.) 9. (.9).5 (.75) 8.8(.35) Through (.55) Spotface 7(.8) (.39) Deep For Locating Pin (.87) 75 (.95) (.).3 (.) HGM-- HGM-X- HGM--8 HGM-X-8 HGM--9 HGM-X-9 "" Thd. Rc 3/ Rc 3/ BSP.F / BSP.F BSP.F M 3/ NPT NPT 3/8- UN No.9
for Pressure Reducing (and heck) Valves HGM--/8/9 (.83) "" Thd. (.79) Deep Places 5(.) (From Rear). (.97).7 (.) (.7) 9.8 (3.8) 9.9 (3.) 8. (.9) 9. (.38). (.) (.3) Through 7.5(.9) Spotface (.7) MILLIMETRES (INHES) (.77) (.79) 8. (3.3) 7.5 (.).7 (.7) 35 (5.3) 7.5 (.). (.) (.8) 9 (3.78) (.9) 5 (5.9) 7(.8) (.39) Deep For Locating Pin 8(.) (.57) (5.5) (.7) HGM-X-/8/9 "" Thd. (.79) Deep Places 5(.) (From Rear) (.7) 9.8 (3.8) 9.9 (3.) 8. (.9) 9. (.38). (.) This port is processed because of sharing this subplate with the H/H Type Pressure ontrol Valve and not used for the Pressure Reducing (and heck) Valve. (.3) Through 7.5(.9) Spotface 5.5 (.) (.77) (.3) 8. (3.3) 7.5 (.) (.87) (.9) (.9) 77 (.97) 5 (.) 7 (.57). (.97).7 (.).7 (.7). (.) (.83) 7(.8) (.39) Deep For Locating Pin 8(.) (.57) (5.5) (.7) HGM-- HGM-X- HGM--8 HGM-X-8 HGM--9 HGM-X-9 "" Thd. Rc -/ Rc -/ -/ BSP.F / BSP.F -/ BSP.F M - -/ NPT 3/8- UN No.
Pressure Reducing and heck Valves RT/RG-3// Performance haracteristics Pressure Drop for Reversed Free Flow Hy draulic Fluid: Viscosity 35 mm /s ( SSU), Specific Gravity.85 Pressure Drop P PSI 35 5 5 5 MPa.5..5..5 RT-3 RG-3 5 L/min.5 5. 7.5 Flow Rate..5 U.S.GPM Pressure Drop P PSI 5 MPa..3. RT- RG-. 5 5 75 5 L/min 5 5 5 35 U.S.GPM Flow Rate Pressure Drop P PSI 8 MPa..5..3. RT- RG-. 5 5 5 L/min 5 7 U.S.GPM Flow Rate For any other viscosity, multiply the factors in the table below. mm /s Viscosity SSU Factor 5 77.8 98.87.9 8.3 5 3.9 78. 7 3.9 8 37.3 9 7.7. For any other specific gravity (G'), the pressure drop ( P') may be obtained from the formula below. P'= P (G'/.85) No.
Pressure Reducing Valves RT/RG-3// Spare Parts List RT/RG-3- -/8/9 RT/RG-- -/8/9 RT/RG-- -/8/9 UTION When making replacement of seals, please do it carefully after reading through the relevant instructions in the Operator's Manual. 7 8 3 9 3 3 3 3 5 3 3 35 5 3 List of Seals Item 3 3 3 35 37 Name of Parts Bonded Seal RT RG -3 SO-NB-P SO-N-P9 SO-NB-P9 SO-NB-P8 SO-NB-P SG-FB-/ Part Numbers RT RG - SO-NB-P SO-N-P9 SO-NB-P9 SO-NB-P8 SO-NB-P8 SG-FB-/ RT RG - SO-NB-P SO-N-P9 SO-NB-P9 SO-NB-P3 SO-NB-P3 SG-FB-/ Quantity RT- RG- Note: When ordering the seals, please specify the seal kit number from the table below. 37 Section "" for Design 8 List of Seal Kits RT-3- RT-- -/8/9 RT-- -/8/9 RG-3- -/8/9 RG-- -/8/9 RG-- -/8/9 -/8/9 Seal Kit Numbers KS-RT-3- KS-RT-- KS-RT-- KS-RG-3- KS-RG-- KS-RG-- Note: No bonded seals are included in the seal kits. No.
Pressure Reducing and heck Valves RT/RG-3// Spare Parts List RT/RG-3- -/8/9 RT/RG-- -/8/9 RT/RG-- -/8/9 3 3 5 8 5 3 UTION When making replacement of seals, please do it carefully after reading through the relevant instructions in the Operator's Manual. 5 3 8 7 33 3 9 3 9 35 3 List of Seals Item 3 3 33 3 35 37 Name of Parts Bonded Seal RT RG -3 SO-NB-P SO-N-P9 SO-NB-P9 SO-NB-P SO-NB-P8 SO-NB-P SG-FB-/ Part Numbers RT RG - SO-NB-P SO-N-P9 SO-NB-P9 SO-NB-P8 SO-NB-P8 SO-NB-P8 SG-FB-/ RT RG - SO-NB-P SO-N-P9 SO-NB-P9 SO-NB-P SO-NB-P3 SO-NB-P3 SG-FB-/ Quantity RT- RG- Note: When ordering the seals, please specify the seal kit number from the table below. 3 37 Section "" for Design 8 List of Seal Kits RT-3- RT-- -/8/9 RT-- -/8/9 RG-3- -/8/9 RG-- -/8/9 RG-- -/8/9 -/8/9 Seal Kit Numbers KS-RT-3- KS-RT-- KS-RT-- KS-RG-3- KS-RG-- KS-RG-- Note: No bonded seals are included in the seal kits. No.3