Pressure reducing valve, direct operated

Transcription

1 Pressure reducing valve, direct operated RE 26564/5.11 Replaces: 2.3 1/8 Type DR 6 DP Size 6 Component series 5X Maximum operating pressure 315 bar [4568 psi] Maximum flow 6 l/min [15.9 US gpm] H7743 Table of contents Contents Page Features 1 Ordering code 2 Symbols 2 Function, section 3 Technical data 4 Characteristic curves 5 Unit dimensions 6, 7 Features For subplate mounting Porting pattern according to DIN 2434 form Porting pattern according to ISO and NFP T3.5.1 R2-22 D3 (with locating hole) 4 adjustment types for pressure adjustment, optionally: Rotary knob Setscrew with hexagon and protective cap Lockable rotary knob with scale Rotary knob with scale 5 pressure ratings Check valve, optional More informatio: Subplates Data sheet 4552 Information on available spare parts:

2 2/8 Bosch Rexroth G Hydraulics DR 6 DP RE 26564/5.11 Ordering code DR 6 DP 5X Y * Pressure reducing valve, direct operated, size 6 djustment type Rotary knob = 1 Setscrew with hexagon and protective cap = 2 Lockable rotary knob with scale = 3 1) Rotary knob with scale = 7 Component series 5 to 59 = 5X (5 to 59: Unchanged installation and connection dimensions) Maximum secondary pressure 25 bar [362 psi] = 25 Maximum secondary pressure 75 bar [188 psi] = 75 Maximum secondary pressure 15 bar [2175 psi] = 15 Maximum secondary pressure 21 bar [346 psi] = 21 Maximum secondary pressure 315 bar [4568 psi] = 315 2) 1) H-key with Material no. R98158 is included in the delivery. 2) Only with adjustment type "2" and without check valve 3) Locating pin ISO x8-St, Material no. R95694 (separate order) Further details in the plain text No code = Without locating hole /6 3) = With locating hole /62 = With locating hole and locating pin ISO x8-St Seal material No code = NBR seals V = FKM seals (other seals upon request) ttention! Observe compatibility of seals with hydraulic fluid used! No code = M = With check valve Without check valve Y = Pilot oil supply internal, leakage oil discharge external Standard types and standard units are contained in the EPS (standard price list). Symbols Version "M" without check valve "No code" version with check valve M M P T (Y) P T (Y)

3 RE 26564/5.11 DR 6 DP Hydraulics Bosch Rexroth G 3/8 Function, section The valve type DR 6 DP is a direct operated pressure reducing valve in 3-way design, i.e. with pressure limitation of the secondary circuit. It is used to reduce a system pressure. The secondary pressure is set via the adjustment type (4). In the initial position the valve is open. Hydraulic fluid can flow from channel P to channel without obstructions. Via the pilot line (6), the pressure in channel is applied to the spool face vis-à-vis the compression spring (3). If the pressure in channel rises above the value set at the compression spring (3), the control spool (2) moves into the control position and holds the set pressure in channel constant. Signal and pilot oil are provided internally, via the control line (6) by channel. If the pressure in channel continues to increase due to external forces at the actuator, it moves the control spool (2) further against the compression spring (3). Thus, channel is, via the control edge (8) at the control spool (2), connected with channel T(Y). Hydraulic fluid flows to the tank until the pressure can only increase slightly. The leakage oil drain from the spring chamber (7) is always realized externally, via channel T(Y). For the free flow back from channel to channel P, you can optionally install a check valve (5). pressure gauge connection (1) allows for the control of the secondary pressure M Type DR 6 DP1-5X/.Y P T(Y) 6

4 4/8 Bosch Rexroth G Hydraulics DR 6 DP RE 26564/5.11 Technical Data (For applications outside these parameters, please consult us!) general Weight kg [lbs] 1.2 [2.64] Installation position mbient temperature range C [ F] 3 to +8 [ 22 to +176] (NBR seals) 2 to +8 [ 4 to +176] (FKM seals) hydraulic Maximum operating pressure Port P bar [psi] 315 [4568] Maximum secondary pressure Port bar [psi] 25; 75; 15; 21; 315 [362; 188; 2175; 346; 4568] Maximum backpressure Port T (Y) bar [psi] 16 [232] Maximum flow l/min [US gpm] 6 [15.9] Hydraulic fluid ny See table below Hydraulic fluid temperature range C [ F] 3 to +8 [ 22 to +176] (NBR seals) 2 to +8 [ 4 to +176] (FKM seals) Viscosity range mm 2 /s [SUS] 1 to 8 [6 to 371] Maximum permitted degree of contamination of the hydraulic fluid - Class 2/18/15 1) cleanliness class according to ISO 446 (c) Hydraulic fluid Classification Suitable sealing materials Standards Mineral oils and related hydrocarbons HL, HLP, HLPD NBR, FKM DIN HETG NBR, FKM Environmentally Insoluble in water HEES FKM compatible ISO 1538 Soluble in water HEPG FKM ISO 1538 Water-free HFDU, HFDR FKM ISO Flame-resistant HFC (Fuchs Hydrotherm 46M, Water-containing Petrofer Ultra Safe 62) NBR ISO Important information on hydraulic fluids! For more information and data on the use of other hydraulic fluids refer to data sheet 922 or contact us! Flame-resistant water-containing: Maximum operating pressure 21 bar Maximum hydraulic fluid temperature 6 C Expected service life as compared to HLP hydraulic oil There may be limitations regarding the technical valve 3 % to 1 % data (temperature, pressure range, service life, maintenance intervals, etc.)! 1) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and at the same time increases the service life of the components. For the selection of the filters see

5 RE 26564/5.11 DR 6 DP Hydraulics Bosch Rexroth G 5/8 Characteristic curves (measured with HLP46, ϑ Oil = 4 ± 5 C [14 ± 9 F]) p -q V characteristic curves p-q V characteristic curves Secondary pressure in bar [psi] [576] [45] [4] [35] [3] [25] [2] [15] [1] [5] [] Pressure differential in bar [psi] [362.6] [3] [25] [2] [15] [1] [5] [] [13.2] [1] [5] [] [5] [1] [15.9] to T P to Flow in l/min [US gpm] [] [2] [4] [6] [8] [1] [12] [14] [15.9] Flow in l/min [US] gpm] Note! With lower pressures set, the curve development is maintained according to the pressure rating. The characteristic curves apply to the pressure at the valve output p = bar across the entire flow range. 1 P to (minimum pressure differential) 2 to T(Y) (minimum pressure differential) 3 p only via check valve 4 p via check valve and completely opened control cross-section

6 6/8 Bosch Rexroth G Hydraulics DR 6 DP RE 26564/5.11 Unit dimensions (dimensions in mm [inch]) 4; [7.44] 32[Ø1.26] 39,5 [1.56] ,5 4 [Ø1.57] 5 [.71] [8.23] 233 [9.17] [Ø1.38] [.79] [1.57] [1.61] [2.7] [1.97] [7.83] 6,7 [.26] 27,5 84,5 [3.33] [1.8] 12,5 [.49] 11 [Ø1.54] 39 F1 F4 P T(Y) B G F2 F3 [1.77] 45 4 x 12,2; 1,4 [Ø.48;.55] 4 x 5,4 [Ø..213] Explanations of items, valve mounting screws and subplates see page 7.,1/1 [.4/4.] Rzmax 4 Required surface quality of the valve mounting face

7 RE 26564/5.11 DR 6 DP Hydraulics Bosch Rexroth G 7/8 Unit dimensions 1 Name plate 2 djustment type "1" 3 djustment type "2" 4 djustment type "3" 5 djustment type "7" 6 Space required to remove the key 7 Valve mounting bores 8 Lock nut SW24 9 Hexagon SW1 1 Identical seal rings for ports, B, P, T(Y) 11 Pressure gauge connection G1/4, 12 deep. Internal hexagon SW6 12 Without check valve 13 With check valve 14 Port B without function 15 Porting pattern according to DIN 2434 form (without locating hole), or ISO and NFP T3.5.1 R2-22 D3 (with locating hole for locating pin ISO x8-St, Material no. R95694, separate order) Subplates according to data sheet 4552 (separate order) (without locating hole) G 341/1 (G1/4) G 342/1 (G3/8) G 52/1 (G1/2) (with locating hole) G 341/6 (G1/4) G 342/6 (G3/8) G 52/6 (G1/2) Valve mounting screws (separate order) 4 hexagon socket head cap screws metric ISO M5 x flZn-24h-L with friction coefficient µ total =.9 to.14, Tightening torque M = 7 Nm ±1 %, Material no. R hexagon socket head cap screws UNC 1-24 UNC x 2" (on request)

8 8/8 Bosch Rexroth G Hydraulics DR 6 DP RE 26564/5.11 Notes Bosch Rexroth G Hydraulics Zum Eisengießer Lohr am Main, Germany Phone +49 () / 18- Fax +49 () / documentation@boschrexroth.de This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth G. It may not be reproduced or given to third parties without its consent. The data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.

9 Pressure reducing valve, pilot operated RE 26892/5.11 Replaces: 2.3 1/12 Type DR Size 1 to 32 Component series 5X Maximum operating pressure 35 bar Maximum flow 4 l/min K466/9 Table of contents Contents Page Features 1 Ordering code 2 Symbols 2 Function, section 3 Technical data 4 Characteristic curves 5 to 7 Unit dimensions 8 to 11 Installation bore 12 Features For subplate mounting Porting pattern according to ISO 5781 For threaded connection s cartridge valve 4 adjustment types, optional: Rotary knob Bushing with hexagon and protective cap Lockable rotary knob with scale Rotary knob with scale 5 pressure ratings Check valve, optional (only subplate mounting) More information: Subplates Data sheet 4562 Information on available spare parts:

10 2/12 Bosch Rexroth G Hydraulics DR RE 26892/5.11 Ordering code DR 5X Y * Complete valve = no code (Subplate mounting or threaded connection) Pilot valve = C without main spool insert (cartridge valve) (do not enter size) Pilot valve = C with main spool insert (cartridge valve) (enter valve size 3) Size Subplate mounting " " Ordering code Threaded connection "G" 1 = 1 = 1 (G1/2) 16 = 15 (G3/4) 25 = 2 = 2 (G1) 25 = 25 (G1 1/4) 32 = 3 = 3 (G1 1/2) s cartridge valve = no code (version "C", without main spool insert) s cartridge valve = (version "C", with main spool insert) For subplate mounting = For threaded connection = G djustment type for pressure adjustment Rotary knob = 4 Bushing with hexagon and protective cap = 5 (always with maximum pressure adjustment) Lockable rotary knob with scale = 6 1) Rotary knob with scale = 7 Y = Further details in the plain text Seal material No code = NBR seals V = FKM seals (other seals upon request) ttention! Observe compatibility of seals with hydraulic fluid used! No code = With check valve (only for subplate mounting) M = Without check valve Pilot oil supply Pilot oil supply internal, pilot oil return external 5 = Set pressure up to 5 bar 1 = Set pressure up to 1 bar 2 = Set pressure up to 2 bar 315 = Set pressure up to 315 bar 35 = Set pressure up to 35 bar (only version "M") 5X = Component series 5 to 59 (5 to 59: unchanged installation and connection dimensions) 1) H-key with Material no. R98158 is included in the delivery. Symbols Type DR YM B Type DR Y B Y Y

11 RE 26892/5.11 DR Hydraulics Bosch Rexroth G 3/12 Function, section Pressure valves type DR are pilot operated pressure reducing valves that are controlled from the secondary circuit. The pressure reducing valves basically comprise of a main valve (1) with main spool insert (3) and pilot control valve (2) with pressure adjustment element. Basic principle: In rest position, the valves are open. Hydraulic fluid flows from channel B via the main spool insert (3) to channel without obstructions. The pressure available in channel acts on the lower main spool side. t the same time, the pressure is applied to the spring-loaded side of the main spool (3) via the nozzle (4) and at the ball (6) in the pilot control valve (2) via the channel (5). It also acts on the ball (6) via nozzle (7), control line (8), check valve (9) and nozzle (1). Depending on the spring (11) setting, a pressure builds up in front of the ball (6), in the channel (5) and in the spring chamber (12), which keeps the control spool (13) in opened position. The hydraulic fluid in channel B can flow via the main spool insert (3) to channel without obstructions until a pressure builds up in channel that exceeds the value set at the spring (11) and opens the ball (6). The control spool (13) moves in closing direction. The desired reduced pressure is achieved if there is a state of equilibrium between the pressure in channel and the pressure set at the spring (11). The pilot oil return from the spring chamber (14) is always effected externally via the control line (15) into the tank. For the free flow back from channel to channel B, you can optionally install a check valve (16). pressure gauge connection (17) allows for the control of the reduced pressure in channel a a Type DR..-4-5X/...Y... B Y Section a - a 16 B without check valve with check valve

12 4/12 Bosch Rexroth G Hydraulics DR RE 26892/5.11 Technical Data (For applications outside these parameters, please consult us!) general Size (type DR..2) 25 (type DR..25) Weight Subplate mounting Type DR.. kg Installation position Cartridge valve Type DRC kg 1.2 Type DRC 3 kg 1.5 Threaded connection Type DR..G kg mbient temperature range C 3 to +5 (NBR seals) 2 to +5 (FKM seals) hydraulic ny Maximum operating pressure Port B bar 35 1) Maximum inlet pressure Port B bar 35 1) Maximum outlet pressure Port bar 35 1) Operating pressure range Port bar 1 to 35 1) Maximum backpressure Port Y bar 35 1) Minimal set pressure bar Flow-dependent (see characteristic curves page 5) Maximum set pressure bar 5; 1; 2; 315; 35 1) Maximum flow Subplate mounting l/min Hydraulic fluid Threaded connection l/min See table below Hydraulic fluid temperature range C 3 to +8 (NBR seals) 2 to +8 (FKM seals) Viscosity range mm 2 /s 1 to 8 Maximum permitted degree of contamination of the hydraulic Class 2/18/15 2) fluid - cleanliness class according to ISO 446 (c) Hydraulic fluid Classification Suitable sealing materials Standards Mineral oils and related hydrocarbons HL, HLP, HLPD NBR, FKM DIN HETG NBR, FKM Environmentally Insoluble in water HEES FKM compatible ISO 1538 Soluble in water HEPG FKM ISO 1538 Water-free HFDU, HFDR FKM ISO Flame-resistant HFC (Fuchs Hydrotherm 46M, Water-containing Petrofer Ultra Safe 62) NBR ISO Important information on hydraulic fluids! For more information and data on the use of other hydraulic fluids refer to data sheet 922 or contact us! Flame-resistant water-containing: Maximum operating pressure 21 bar Maximum hydraulic fluid temperature 6 C Expected service life as compared to HLP hydraulic oil There may be limitations regarding the technical valve 3 % to 1 % data (temperature, pressure range, service life, maintenance intervals, etc.)! 32 1) 35 bar only possible with version without check valve 2) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and at the same time increases the service life of the components. For the selection of the filters see

13 RE 26892/5.11 DR Hydraulics Bosch Rexroth G 5/12 Characteristic curves (measured with HLP46, ϑ oil = 4 C ± 5 C) Outlet pressure in bar Outlet pressure p depending on the flow q V (B to ) Flow in l/min 1 Size 1 2 Size 25 3 Size 32 Minimum set pressure with p min depending on the flow q V (B to ) Reduced pressure in bar Flow in l/min 7 1 Size 1 2 Size 25 3 Size 32 4 p min Performance limit (system-dependent) 5 Size 1 6 Size 25 7 Size 32 The characteristic curves apply to the pressure at the valve output p T = bar across the entire flow range.

14 6/12 Bosch Rexroth G Hydraulics DR RE 26892/5.11 Characteristic curves (measured with HLP46, ϑ oil = 4 C ± 5 C) 14 p-q V characteristic curves (B to ; lowest pressure differential adjustable) Pressure differential in bar Flow in l/min 1 Size 1 2 Size 25 3 Size 32 Pilot flow depending on flow (B to ) and pressure differential 1,5 Pilot flow in l/min 1,, Flow in l/min 4 1 Size 1 2 Size 25 3 Size 32 4 p = 5 bar 5 p = 2 bar

15 RE 26892/5.11 DR Hydraulics Bosch Rexroth G 7/12 Characteristic curves (measured with HLP46, ϑ oil = 4 C ± 5 C) 3 p-q V characteristic curves across the check valve ( to B) Pressure differential in bar Flow in l/min Size 1 2 Size 25 3 Size 32 Flow resistance across check valve, main stage closed Flow resistance across check valve with completely opened main stage

16 8/12 Bosch Rexroth G Hydraulics DR RE 26892/5.11 Unit dimensions: Type DRC ; cartridge valve (dimensions in mm) ; G1/4; Y , , ,4 9 Installation bore, see page X Y , Name plate 2.1 Y port for pilot oil return external 2.2 Y port optionally for pilot oil return external 3 djustment type "4" 4 djustment type "5" 5 djustment type "6" 6 djustment type "7" 7 Hexagon SW1 8 Space required to remove the key 9 Valve mounting bores 1 Seal rings 11 Main spool insert 12 Seal ring 13 Seal ring 14 Seal ring 15 Support ring 16 Support ring Valve mounting screws (separate order) 4 hexagon socket head cap screws ISO M8 x flZn-24h-L with friction coefficient µ total =.9 to.14, Tightening torque M = 31 Nm ±1 %, Material No. R91325

17 RE 26892/5.11 DR Hydraulics Bosch Rexroth G 9/12 Unit dimensions: Type DR ; threaded connection (dimensions in mm) G1/4; ; 6 8 Y Ø35 2 Ø Ø25 5,5 G1/4; 12 B D1 ØD2 114 T T D1 ØD Ø72 Ø39, Size D1 ØD2 T1 1 G1/ (Type DR 15 G ) G3/ (Type DR 2 G ) G (Type DR 25 G ) G1 1/ (Type DR 3 G ) G1 1/ Name plate 2.1 Y port for pilot oil return external 3 djustment type "4" 4 djustment type "5" 5 djustment type "6" 6 djustment type "7" 7 Hexagon SW1 8 Space required to remove the key 9 Valve mounting bores 17 Pressure gauge connection

18 1/12 Bosch Rexroth G Hydraulics DR RE 26892/5.11 Unit dimensions: Type DR ; subplate mounting (dimensions in mm) Y H1 2 G1/4; ; , H Y H3 G1/4; L2 L3 L6 6 L1 L4 L B1 B2 Y B 29 B5 B4 B3 Item explanations, subplates, and valve mounting screws, see page 11. L7 L X L9 L1,1/1 Rzmax 4 Required surface quality of the valve mounting face Size L1 L2 L3 L4 L5 L6 L7 L8 L9 L Size B1 B2 B3 B4 B5 H1 H2 H

19 RE 26892/5.11 DR Hydraulics Bosch Rexroth G 11/12 Unit dimensions 1 Name plate 2.1 Y port for pilot oil return external 2.2 Y port optionally for pilot oil return external 3 djustment type "4" 4 djustment type "5" 5 djustment type "6" 6 djustment type "7" 7 Hexagon SW1 8 Space required to remove the key 9 Valve mounting bore 17 Pressure gauge connection 18 Identical seal rings for ports and B; identical seal rings for ports X and Y 19 Port B without function (blind hole) 2 Locating pin Subplate mounting: Subplates according to data sheet 4562 (separate order) Size 1 G 46/1 (G3/8) G 461/1 (G1/2) Size 2 G 412/1 (G3/4) G 413/1 (G1) Size 3 G 414/1 (G1 1/4) G 415/1 (G1 1/2) Valve mounting screws (separate order) Size 1 4 hexagon socket head cap screws metric ISO M1 x flZn-24h-L with friction coefficient µ total =.9 to.14, Tightening torque M = 6 Nm ±1 %, Material no. R Size 2 4 ISO M1 x flZn-24h-L with friction coefficient µ total =.9 to.14, Tightening torque M = 6 Nm ±1 %, Material no. R Size 3 6 ISO M1 x flZn-24h-L with friction coefficient µ total =.9 to.14, Tightening torque M = 6 Nm ±1 %, Material no. R913126

20 12/12 Bosch Rexroth G Hydraulics DR RE 26892/5.11 Installation bore (dimensions in mm) Z Rz 8 29,2 26,2,8 B,5 B 45 32H7 28,5 +,1,1/1, x 3 Rzmax 4 2 x 45 X Y 25,5 2 x 45 Rz 8 Rz 16 B max R, ,1 42 +,1 +,5 51,5, ,8 +,2 M4; View "Z" 16 4 x M8; X Y 44 1 Note! The Ø32 bore can tap a Ø45 bore at any point. However, it must be observed that the connection bores and the valve mounting bores are not damaged! 2 support ring and seal rings must be inserted into the bore before assembly of the main spool 61 3 Nozzle, separate order Bosch Rexroth G Hydraulics Zum Eisengießer Lohr am Main, Germany Phone +49 () / 18- Fax +49 () / documentation@boschrexroth.de This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth G. It may not be reproduced or given to third parties without its consent. The data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.