RA / Pressure Reducing Valve, Pilot Operated Model DR (Series 5X) Ordering code 1/ PSI (350 bar) GPM (400 L/min)

Transcription

1 R /06.98 Pressure Reducing Valve, Pilot Operated Model DR (Series 5) Size 10 to PSI (50 bar) GPM (400 L/min) R /06.98 Replaces: Pilot operated pressure reducing valve Threaded in-line, manifold, or subplate design Mounts on standard ISO , 08 or 10, NFP/NSI P 06, P 08 or P 10 interfaces Four pressure ranges available, to 5000 PSI (50 bar) Optional built-in reverse free-flow check valve Four pressure adjustment options Hand knob Screw adjustment with locknut and protective cap Key lock hand knob with scale Hand knob with scale K Model DR20-5-5/15.. Ordering code DR 5 * Pressure reducing valve = DR Complete valve = no code Pilot valve only (do not state size or mounting type) = C Pilot valve with cartridge assembly for manifold mounting (state valve size 0, not mounting type) = C Subplate mounting Ordering NFP/NSI Subplates code interface available standard SE, NPT, SP 10 P 06 /8" and 1/2" 20 P 08 /4" and 1" 0 P /4" and 1-1/2" Threaded in-line connections G 10 1/2" -8; / /4" -; 1-1/ " -16; 1-5/ /4" -20; 1-5/ /2" -24; 1-7/8- Subplate mounted = no code Threaded housing for in-line mounting = G djustment mechanism Hand knob = 4 Screw adjustment with locknut and protective cap = 5 Key lock hand knob with scale = 6 1) Hand knob with scale = 7 1) Key (Part No RR ) is included with valve 2) (only available in model without check valve) Further details to be written in clear text no code = SP threaded housing = SE threaded housing (standard) no code = NR seals, suitable for petroleum oils (HM, HL, HLP) V = FPM seals, suitable for phosphate ester fluids (HFD-R) no code = With reverse free-flow check valve (only for subplate mounted valves) M = Without reverse free-flow check valve = Internally piloted; externally drained Maximum pressure setting 50 = PSI (50 bar) 100 = PSI (100 bar) 200 = PSI (200 bar) 15 = PSI (15 bar) 50 = PSI (50 bar) 2) 5 = Series 50 to 59 (50 to 59; externally interchangeable) 1/8

2 R /06.98 Functional description Models DR are pilot operated pressure reducing valves. They reduce pressure in a branch circuit lower than that of the main circuit. This valve design is capable of maintaining a precise pressure setting even at high flows, since the pilot signal is supplied from the secondary side, (via orifices 4 and 7). These reducing valves consist of main housing (1) pilot valve (2) and main cartridge assembly (). The reducing valve is normally open permitting flow from port to through main spool (1). Until the pressure setting of the pilot section (2) is reached, system pressure is maintained above the main spool (1) via passageways (8), (5) and orifice (4). The main spool is hydraulically balanced and the spring in chamber () holds main spool (1) open. When pressure increases beyond the set value of spring (11), pilot ball (6) opens, allowing orifices (4), (7) and (10) to maintain flow over pilot ball (6). When pressure in the branch circuit, (pressure at port ), exceeds the set value of spring (11) plus the spring force in chamber (), main spool (1) begins to close thereby orificing flow of fluid to port. Main spool (1) then modulates to maintain the set pressure at port. Pilot valve spring chamber (14) must be drained externally via passage (15), or port in pilot valve (2). n optional reverse free flow check valve (16) is available if required a Model DR..-4-5/... without check valve with check valve 16 a - a Symbols DR..-.-5/...M.. DR..-.-5/... (subplate mounting only) 2/8

3 Technical data (For applications outside these parameters, please consult us!) R /06.98 General Mounting position Optional Weight (approx.) Valve size Subplate mounted DR lbs (kg) 7.5 (.4) 11.7 (5.) 17.7 (8.0) DRC lbs (kg) 2.7 (1.2) DRC 0 lbs (kg). (1.5) Threaded connections DR..G.. lbs (kg) 11.7 (5.) 11.5 (5.2) 11. (5.1) 11.0 (5.0) 10.6 (4.8) hydraulic Inlet pressure, port PSI (bar) (15) * Outlet pressure, port PSI (bar) PSI (15) * ackpressure, port PSI (bar) (15) * Setting pressure minimum PSI (bar) Q-related, see operating curves page 4 maximum PSI (bar) (50), (100), (200), (15), (50) * Maximum flow Valve size Subplate mounting GPM (L/min) 9.6 (150) 79.2 (00) (400) Threaded connections GPM (L/min) 9.6 (150) 79.2 (00) 79.2 (00) (400) (400) Hydraulic fluid Petroleum oils (HM, HL, HLP); Phosphate ester fluids(hfd-r) Fluid temperature range F ( C) NR seals; ( ) FPM seals; ( ) Viscosity range SUS (mm 2 /s) ( ) Maximum degree of fluid contamination Class 18/15 according so ISO Therefore, we recommend a filter with a retention rate of ß * PSI (50), only in model without check valve /8

4 R /06.98 Performance Curves, measured at ν = 190 SUS (41 mm 2 /s) and t = 2 F (50 C) (50) Secondary pressure vs. flow Reduced pressure p in PSI (bar) Outlet pressure p in PSI (bar) (15) 4600 (00) 4500 (250) (200) (150) (100) (50) (16) (14) () (10) (8) (6) (4) (2) Size 10 Size 20 Size 0 (50) (100) (150) (200) (250) (00) (50) (400) Minimum adjustable pressure setting (p min ) vs. flow Q ( ) (Drain to 0 PSI reference) 1 2 p min Size 10 Size 20 Size 0 Power limit (system dependent) 1 = Size 10 2 = SIze 25 = Size 0 (50) (100) (150) (200) (250) (00) (50) (400) Note: p = pressure at port (14) 200 Minimum p over valve vs. flow Q ( ) Pressure difference p in PSI (bar) () (10) (8) (6) (4) (2) Size 10 Size 20 Size 0 (50) (100) (150) (200) (250) (00) (50) (400) 4/8

5 Performance Curves, measured at ν = 190 SUS (41 mm 2 /s) and t = 2 F (50 C) R /06.98 Pilot flow vs. system flow ( ) as related to p over reducing valve 0.45 Control flow in GPM (L/min) (1.5) (1.0) (0.5) p = 200 bar Size 10 Size 20 p = 50 bar Size (50) (100) (150) (200) (250) (00) (50) (400) (0) Pressure drop across check valve, during reverse flow Pressure difference p in PSI (bar) (25) 75 (20) 00 (15) 225 (10) 150 (5) 75 Size 10 Size 20 Size 2 (50) (100) (150) (200) (250) (00) (50) (400) p over reverse flow check with main cartridge closed p over reverse flow check with main cartridge fully open 5/8

6 R /06.98 Unit dimensions, Pressure reducing valve, subplate mounted: dimensions in inches (millimeters) (2.5) L1 L2 L4 L L5 L (2) L7 L8 L9 L (118) 4. (110) (49) Ø 0.4 (11) (29) (145) 11 1 Name plate 2.1 Port for external drain 2.2 Port optional for external drain SE-4; 7/16-20 (G 1/4")/0.47 () deep Port for external pilot, (non functional) 4 djustment mechanism 4 5 djustment mechanism 5 6 djustment mechanism 6 7 djustment mechanism 7 9 djustment nut 10 mm /F 10 Space required to remove key 11 Locating pin 4) valve mounting holes for DR 10 and 20 6) valve mounting holes for DR 0 1 Optional pressure gauge connection DRC, DRC 0 mounting Subplate (see R ) G 51/05(1/4" NPT) G 51/ (SE-4; 7/16-20) Mounting bolts: 4) 5/16-18 UNC x 1 1/2" (M8 x 40) socket head cap screw (SE grade 8 or better) tightening torque 27 lb-ft (7 Nm). Subplate and valve mounting bolts must be ordered separately. Porting pattern to ISO or 10, NFP/NSI P 08 or P 10 Subplate for, Valve size 10: G 460/05 (*/8" NPT), G 460/ (*SE-6; 9/16-18), G 461/05 (*1/2" NPT), G 461/ (*SE-8; /4-16) 6.65 (169) 0.7 (18) ; 7 10 Ø 1.8 (5) (20) Ø 1.55 (9.5) Ø 1.26 (2) H1 6/ (2.5) (16) SE-4; 1/16-20 Ø 0.26 (6) (G 1/4")/0.47 () deep Note: /F = across flats Required surface finish of interface when mounting the valve without our subplate /4.0 in 0.01/100 mm 2 (R max 4) H H2 Valve size 20: G 4/ (*SE-; 1-1/16-), G 41/ (*SE-16; 1-5/16-) Valve size 0: G 414/ (*SE-20; 1-5/8-), G 415/ (*SE-24; 1-7/8-) * = and ports, all and ports (1/4" NPT) or (SE-4; 7/16-20) Valve mounting bolts for Valve size 10: 4) /8-16 UNC x 2" (M10 x 50) tight. torque = 50 lb-ft (69 Nm) Valve size 20: 4) /8"-16 x 2-1/4" UNC (M10 x 60) tight. torque = 50 lb-ft (69 Nm) Valve size 0: 6) /8"-16 x 2-/4" UNC (M10 x 70) tight. torque = 50 lb-ft (69 Nm) Socket head cap screws SE grade 8 or better subplates and valve mounting bolts must be ordered separately, see R Model L1 L2 L L4 L5 L6 L7 L8 DR (96) 1.97 (5.5) () (42.9) (21.5) 0.28 (7.2) (21.5) DR (116) (7.5) 1.94 (5.4) 2.74 (60.) 1.56 (9.7) 0.47 (11.1) (20.6) DR (145) () 1.17 (29.8).15 (84.2) 2.42 (59.5) (42.1) (16.7) (24.6) Model L9 L H1 H2 H O-ring O-ring Ports, Ports, DR (1.8) (5.8).46 (85) (50) (66.7) 2.15 (58.8) 0.11 (7.9) (1).622 (92) (28) 17. mm x 2.62 mm 9.25 mm x 1.78 mm DR (44.5) 1.97 (49.2) (102) 2.42 (59.5).6 (79.4) (7) (6.4) 4.80 (2) (102) (8) mm x.5 mm 9.25 mm x 1.78 mm DR (62.7) (67.5) (0) (76).811 (96.8).65 (92.8) (.8) (10) 4. (110) (46) 4.52 mm x.5 mm 9.25 mm x 1.78 mm

7 Unit dimensions, Pressure reducing valve, threaded connection Model G : dimensions in inches (millimeters) R / (80) Ø 2.85 (72) 6.65 (169) 0.7 (18) 5.71 (145) 4.64 (118) 0.08 (2) (49) 4. (110) 5 9 SE-4; 1/16-20 (G 1/4")/0.47 () deep 2 4 6; 7 10 Ø 1.8 (5) (20) Ø 1.55 (9.5) Ø 1.26 (2) (14) Ø (25) SE-4; 7/16-20 (G 1/4")/0.47 () deep (44) T (1) D1 Ø D (72) (5.5) (4).54 (90) (17) D1 T (1) 0.4 (11) Ø D (47) (56) (114) Model D1 ØD2 T1 DR 10 G SE-8; /4-16 UNC (1/2" SP) (4) (14) DR 15 G SE-; 1-1/16- UNC (/4" SP) (42) (16) DR 20 G SE-16; 1-5/16- UNC (1" SP) (47) (18) DR 25 G SE-20; 1-5/8- UNC (1-1/4" SP) (58) (20) DR 0 G SE-24; 1-7/8- UNC (1-1/2" SP) (65) (22) 1 Name plate 2 Port for external drain 4 djustment mechanism 4 5 djustment mechanism 5 6 djustment mechanism 6 7 djustment mechanism 7 9 djustment nut 10 mm /F 10 Space required to remove key Valve mounting hole 1 Optional pressure gauge connection Note: /F = across flats 7/8

8 R /06.98 Unit dimensions, Pressure relief valve, manifold mounting pilot valve with (DC 0) or without (DC) cartridge assembly: dimensions in inches (millimeters) 0.08 (2) (2) SE-4; 7/ (11.5) 0.26 (6) (28) (49) (61) (51) (7.5) 1.78 (5) 1 4. (110) 2.2 Ø 0. (8.4) 4.64 (118) 1.72 (44) (28.5) (29) 5.71 (145) 1 Name plate 2.1 Port for external drain 2.2 Port optional for external drain 4 djustment mechanism 4 5 djustment mechanism 5 6 djustment mechanism 6 7 djustment mechanism 7 9 djustment nut 10 mm /F 10 Space required to remove key Valve mounting hole 14 O-ring 9.25 mm x 1.78 mm R-ring 9.81 mm x 1.5 mm x 1.78 mm 15 Main cartridge assembly 16 Drilling can connect to drilling at any position. However, care must be taken not to damage port or the valve mounting holes. 17 Insert back-up ring and O-ring before installing cartridge Note: /F = across flats 6.65 (169) 0.7 (18) , (40) (29) Ø 0157 (4) 2) 45 2) ±0.008 (29 ±0.2 ) ±0.008 (26 ±0.2 ) Ø (45) Ø ( ) (0.008) Ø (0.05) Z Z ( ) Z ) (25.5) Z Ø 1.8 (5) Ø (4) (17) (20) /4 in 0.01/100 mm 1.8 (4) Ø 1.26 (2) Ø ( ) Ø ( ) ±0.004 (51.5 ±0.1 ) Ø 1.55 (9.5) 18 O-ring 28. mm x 1.78 mm* 19 O-ring 27. mm x 2.4 mm* 20 O-ring mm x 2.62 mm* 21 ack-up ring mm x 1.5 mm 22 ack-up ring 2 mm OD x 28.4 mm ID x 0.7 mm 2 Cartridge assembly includes orifice and main poppet (0.02) (55) (2) (51) (16) Ø 1.26 (2) 4) mounting bolts must be ordered separately and torqued to 27. lb-ft (7 Nm) * = included 1.72 (44) max. R (0.) Ø 0.26 (6) M4; 0.24 (6) deep Ø (18) Ø ( ) Ø (2) x y 6 = (R z 8) 2 = (R z 4) (61) 4) 5/16-18x1-1/2" UNC bolts (M8x40)/ 0.47 () deep View "Z" 2 z = 5 (R z 16) 8/8 Mannesmann Rexroth Corporation Rexroth Hydraulics Div., Industrial, 215 City Line Road, ethlehem, P Tel. (610) Fax: (610) Rexroth Hydraulics Div., Mobile, 1700 Old Mansfield Road, Wooster, OH Tel. (0) Fax: (0) 26- ll rights reserved Subject to revision Printed in U.S..