Pressure relief valve, pilot-operated. Type DB and DBW. Features. Contents. RE Edition: Replaces:

Transcription

1 ressure relief valve, pilot-operated ype D and DW RE 580 Edition: Replaces: Size 10 Component series 5 Maximum operating pressure 50 bar Maximum flow 650 l/min H6088+H6089 Features For subplate mounting orting pattern according to ISO (NG10), ISO (NG5) and ISO (NG) For threaded connection As cartridge valve (cartridge) 4 adjustment types for pressure adjustment, optionally: Rotary knob ushing with hexagon and protective cap Lockable rotary knob with scale Rotary knob with scale 5 pressure ratings Solenoid-actuated unloading via an installed directional spool valve or directional seat valve High-power solenoid Explosion-protected solenoid (upon request) Switching shock damping, optional (DW type only) Corrosion-protected design Contents Features 1 Ordering code, Symbols 4 Function, section 5, 6 echnical data 7, 8 Characteristic curves 9, 10 Dimensions Mating connectors 1 General information 1 Further information ype-examination tested safety valves type D(W) E, component series 5 according to ressure Equipment Directive 014/68/EU Ordering code 16 Deviating technical data 17 Safety instructions 17 Characteristic curves 18 0 RE 580, edition: 017-0, osch Rexroth AG

2 / D; DW ressure relief valve Ordering code D 5 / * 01 ressure relief valve D 0 Without directional valve no code With built-on directional valve W 0 ilot-operated valve (complete) no code ilot control valve without main spool insert (do not enter any size) C ilot control valve with main spool insert (enter size 10 or 0) C ilot control valve without main spool insert for subplate mounting (do not enter any size) 1) 04 Size 10 Subplate mounting "no code" 10 hreaded connection "G" (G1/) 10 Size 16 hreaded connection "G" (G/4) 15 Size 5 Subplate mounting "no code" 0 hreaded connection "G" (G1) 0 hreaded connection "G" (G1 1/4) 5 Size Subplate mounting "no code" 0 hreaded connection "G" (G1 1/) 0 05 A a b Normally closed A ) a A b Normally open ) ype of connection 06 Subplate mounting or cartridge valve no code hreaded connection G Adjustment type for pressure adjustment 07 Rotary knob (not for version "C" and "") 1 ushing with hexagon and protective cap Lockable rotary knob with scale ) Rotary knob with scale 7 08 Main spool Ø4 mm (all sizes) Main spool Ø8 mm (only NG) N 09 Component series (50 59: unchanged installation and connection dimensions) 5 ressure rating 10 Set pressure up to 50 bar 50 Set pressure up to 100 bar 100 Set pressure up to 00 bar 00 Set pressure up to 15 bar 15 Set pressure up to 50 bar 50 osch Rexroth AG, RE 580, edition: 017-0

3 ressure relief valve D; DW / Ordering code D 5 / * ilot oil supply and pilot oil return (see also Symbols on page 4) 11 ilot oil supply and pilot oil return internal ilot oil supply external, pilot oil return internal 5) ilot oil supply internal, pilot oil return external ilot oil supply and pilot oil return external 5) 4) 1 Standard version no code Valve for minimum cracking pressure (not for version without main spool insert and not suitable for mutual relief function) 1 Without switching shock damping no code With switching shock damping (only version "DW") S 14 Without directional valve no code With directional spool valve (data sheet 178) 6E ) With directional seat valve (data sheet 058) 6SM ) 15 Direct voltage 4 V G4 ) Alternating voltage 0 V 50/60 Hz W0 ) 16 With concealed manual override (standard) N9 ) With manual override N ) Without manual override no code Electrical connection 17 Without mating connector; connector DIN EN K4 ; 7) 18 Nozzle Ø 1. mm in channel of the directional spool valve (version "6E") R1 8) Nozzle Ø 1. mm in channel of the directional seat valve (version "6SM") 1 8) Corrosion resistance 19 None no code Improved corrosion protection (40 h salt spray test according to EN ISO 97); (only version "without directional valve" and "", however without protective cap) J Seal material 0 NR seals no code FKM seals V Observe compatibility of seals with hydraulic fluid used! (Other seals upon request) Equipment Directive 1 Without type-examination procedure no code ype-examination tested safety valves according to ressure Equipment Directive 014/68/EU 9) E For further information, see the plain text U 6) 1) "D/DW" corresponds to "DC/DWC", however with closed central bore ) Ordering code only necessary with version with mounted directional valve ("DW"). ) H-key with material no. R is included in the scope of delivery. 4) Dash " " only necessary with version with mounted directional valve ("DW"), without specification of "U" or "S". 5) Not with version "DC/DWC" 6) Only possible up to pressure rating 15 bar 7) Mating connectors, separate order, see page 1. 8) Ordering code only necessary with version with attached directional valve and switching shock damping ("DW.../...S..."). 9) See ordering code on page 16. Notice: referred types and standard units are contained in the ES (standard price list). RE 580, edition: 017-0, osch Rexroth AG

4 4/ D; DW ressure relief valve Symbols ype D ype D ype D ype D ype DW 6E ype DW 6E Normally closed a A b Normally closed a A b Normally open a A b Normally open a A b ype DW 6E ype DW 6E Normally closed a A b Normally closed a A b Normally open a A b Normally open a A b osch Rexroth AG, RE 580, edition: 017-0

5 ressure relief valve D; DW 5/ Function, section: ype D General ressure valves of type D and DW are pilot-operated pressure relief valves. hey are used for limiting (D) or limiting and magnetically unloading (DW) the operating pressure. he pressure relief valves (D) basically consist of the main valve (1) with main spool insert () and pilot control valve () with pressure adjustment element. ressure relief valve type D he pressure applied to channel acts on the main spool (). At the same time, pressure is applied to the springloaded side of the main spool () and to the ball (8) in the pilot control valve () via the control lines (6) and (7) which are equipped with nozzles (4) and (5). If the pressure in channel exceeds the value set at the spring (9), the ball (8) opens against the spring (9). he signal for this is provided internally from channel via control lines (10) and (6). he hydraulic fluid on the spring-loaded side of main spool () now flows via the control line (7), nozzle bore (11) and ball (8) into the spring chamber (1). From here, it is fed into the tank, either internally for type D via control line (1), or externally for type D via control line (14). Nozzles (4) and (5) cause a pressure drop to occur at the main spool (), hence the connection from channel to channel opens. he hydraulic fluid now flows from channel to channel, whilst the set operating pressure is maintained. he pressure relief valve can be unloaded or switched to another pressure (second pressure rating) via port (15) RE 580, edition: 017-0, osch Rexroth AG

6 6/ D; DW ressure relief valve Function, section: ype DW ressure relief valve type DW he function of this valve is basically the same as that of valve type D. he unloading of the main spool () is, however, achieved by controlling the mounted directional spool valve (16). A 16 () ressure relief valve with switching shock damping (sandwich plate), version "DW /..S6E...R1" he opening of the connection from to 1 is delayed by means of the switching shock damping valve (17). ressure peaks and acoustic decompression shocks in the return line can thus be avoided. It is installed between the pilot control valve () and the directional valve (16). he degree of damping (decompression shock) is determined by the size of the nozzle (18). Nozzle Ø 1. mm (ordering code..r1..) is recommended Representation: Directional valve open 1 () 1 osch Rexroth AG, RE 580, edition: 017-0

7 ressure relief valve D; DW 7/ echnical data (For applications outside these values, please consult us!) general Sizes NG10 NG16 NG5 "D.. 0" Weight Subplate mounting hreaded connection Installation position Ambient temperature range Minimum stability of the housing materials (for subplate mounting and version "DC/DWC") NG5 "D.. 5" D kg NG DW kg DC kg 1. DWC kg.65 DC10 or 0... kg 1.5 DWC 10 or 0... kg.95 D G kg DW G kg Any D C (NR seals) (FKM seals) DW C (NR seals) (FKM seals) Housing materials are to be selected so that there is sufficient safety for all imaginable operating conditions (e.g. with regard to pressure resistance, thread stripping strengths and tightening torques). hydraulic Maximum operating pressure Maximum counter pressure ort, bar 50 ort bar 15 ort (D) bar 15 ort, (DW) bar 10 with DC solenoid 160 with AC solenoid Maximum set pressure bar 50; 100; 00; 15; 50 Minimum set pressure Flow-dependent (see characteristic curves page 9) Maximum flow Subplate mounting l/min hreaded connection l/min Hydraulic fluid See table page 8 Hydraulic fluid temperature range C (NR seals) (FKM seals) Viscosity range mm /s Maximum admissible degree of contamination of the hydraulic fluid Class 0/18/15 1) cleanliness class according to ISO 4406 (c) 1) he cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see Notes: ank preloading adds to the minimum set pressure (ports and ) echnical data for directional seat valve see data sheet 058, for directional spool valve data sheet 178. Deviating technical data for type-examination tested safety valves can be found on page 17. RE 580, edition: 017-0, osch Rexroth AG

8 8/ D; DW ressure relief valve echnical data (For applications outside these values, please consult us!) Hydraulic fluid Classification Suitable Standards Data sheet sealing materials Mineral oils HL, HL NR, FKM DIN io-degradable ) Insoluble in water HEG FKM ISO 1580 HEES FKM 901 Soluble in water HEG FKM ISO 1580 Flame-resistant Water-free HFDU (glycol base) FKM HFDU (ester base) ) FKM ISO Containing water ) HFC (Fuchs Hydrotherm 46M, NR etrofer Ultra Safe 60) ISO Important information on hydraulic fluids: Flame-resistant containing water: For further information and data on the use of other hydraulic Maximum operating pressure 10 bar, otherwise increased fluids, please refer to the data sheets above or contact us. cavitation erosion here may be limitations regarding the technical valve data Life cycle as compared to operation with mineral oil HL, HL (temperature, pressure range, life cycle, maintenance intervals, etc.) % he ignition temperature of the hydraulic fluid used must be 50 K Maximum hydraulic fluid temperature 60 C higher than the maximum solenoid surface temperature. io-degradable and flame-resistant: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system. ) Not recommended for corrosion-protected version "J" ) Not for version "DW" osch Rexroth AG, RE 580, edition: 017-0

9 ressure relief valve D; DW 9/ Characteristic curves (measured with HL46, ϑ Oil = 40 ±5 C) Minimum set pressure and circulation pressure dependent on the flow 1) Standard version Minimum set pressure, circulation pressure in bar Flow in l/min 1 NG10 and 16 NG5 NG ("N") 4 "DC 0" "DWC 0" Minimum set pressure, circulation pressure in bar Minimum set pressure and circulation pressure dependent on the flow 1) Version "U" Flow in l/min 1 NG10 and 16 NG5 NG ("N") 4 "DC 0" "DWC 0" Notice: he characteristic curves were measured with external, depressurized pilot oil return. With internal pilot oil return, the inlet pressure increases by the output pressure present in port. 1) he characteristic curves apply for output pressure p = 0 bar in the entire flow range RE 580, edition: 017-0, osch Rexroth AG

10 10/ D; DW ressure relief valve Characteristic curves (measured with HL46, ϑ Oil = 40 ±5 C) Inlet pressure dependent on the flow Inlet pressure in bar NG10 and 16 NG5 NG Flow in l/min Notice: he characteristic curves were measured with external, depressurized pilot oil return. With internal pilot oil return, the inlet pressure increases by the output pressure present in port. ilot flow ilot flow in l/min,0 1,8 1 1,6 1,4 1, 1,0 0,8 0,6 0,4 0, Flow in l/min 1 NG10 and 16 NG5 NG osch Rexroth AG, RE 580, edition: 017-0

11 ressure relief valve D; DW 11/ Dimensions: hreaded connection (dimensions in mm) G1/4; ; 7 Ø5 0 Ø9, Ø 14 Ø5 G1/4; 1 5,5 D1 ØD D1 ØD Ø Version D1 ØD 1 "D 10 G" G1/ 4 14 "D 15 G" G/ "D 0 G" G "D 5 G" G1 1/ "D 0 G" G1 1/ 65 Dimensions for attached directional valve see page 1 and 1; item explanations see page 15 RE 580, edition: 017-0, osch Rexroth AG

12 1/ D; DW ressure relief valve Dimensions: Subplate mounting with directional spool valve "DW...6E" (dimensions in mm) A ,5 (9) ,5 (98) , ; 7 Ø5 0 Ø9, Ø 98 G1/4; 1 G1/4; M8 x 1; 10 5 L9 Ø L8 L7 L5 L6 ØD ,01/100 9 Rz1max 4 1 Required surface quality of the valve contact surface Item explanations see page 15 L4 L 5 L1 L 10 Version L1 L L L4 L5 L6 L7 L8 L9 1 ØD1 "DW 10" "DW 0" "DW 0" osch Rexroth AG, RE 580, edition: 017-0

13 ressure relief valve D; DW 1/ Dimensions: Subplate mounting with directional seat valve "DW...6SM" (dimensions in mm) 50, Ø ; 7 Ø9, Ø 98 G1/4; 1 G1/4; M8 x 1; 10 5 L9 Ø L8 L7 L5 L6 ØD ,01/100 9 Rz1max 4 1 Required surface quality of the valve contact surface L4 L L 5 L1 10 Item explanations see page 15 Version L1 L L L4 L5 L6 L7 L8 L9 1 ØD1 "DW 10" "DW 0" "DW 0" RE 580, edition: 017-0, osch Rexroth AG

14 x 45 14/ D; DW ressure relief valve Dimensions: ilot control valve with ("DC 10 or 0") or without main spool insert ("DC, D") (dimensions in mm) 5 G1/4; ; ,5 51 Ø8, Ø ,01/100 Rz1max 4 Required surface quality of the valve contact surface Ø 44 9 Dimensions for attached directional valve see page 1 and 1; item explanations see page ,5 4 1 "Z" Ø0, A Ø4, Ø0,05 A A 9±0, 6±0, Ø45 ØH7 Ø8,5 +0,1 0 1,9 +0,1 x 0 M6; 8 0,01/100 mm 0,0 A "Z" 51±0, x M8; 1 0,008 Z 5,5 17 4±0,5 Ø 40 +0,1 +0,1 4 +0,05 48 ±0,1 44±0,1 x 45 Z 4 max. R0, Ø6 Ø4,8 +0, M4;6 Ø 61±0, = Rz1max 4 = Rz 8 Z = Rz 16 osch Rexroth AG, RE 580, edition: 017-0

15 ressure relief valve D; DW 15/ Dimensions 1 Name plate port for pilot oil supply, external port for pilot oil return, external 4 Adjustment type "1" 5 Adjustment type "" 6 Adjustment type "" 7 Adjustment type "7" 8 Hexagon wrench size 10 9 Space required to remove the key 10 Locking pin 11 Valve mounting bore 1.1 Directional spool valve NG6, see data sheet Directional seat valve NG6, see data sheet Solenoid "a" 14 Dimension for valve without manual override 15 Mating connector without circuitry (separate order, see page 1) 16 Mating connector with circuitry (separate order, see page 1) 17 Switching shock damping valve, optional 18 Space required for removing the mating connector 19 Omitted with internal pilot oil return 0 Seal ring 1 Main spool insert ore Ø may intersect Ø45 at any point. However, it must be observed that the connection bore and the mounting bore are not damaged. Support ring and seal ring are to be inserted before the assembly of the main spool into this bore. 4 Nozzle (separate order; recommended nozzle Ø1.0) 5 Seal ring 6 Seal ring 7 Seal ring 8 Support ring 9 Support ring 0 Dimension for valve with manual override "N" 1 Dimension ( ) for valve with AC solenoid Dimension for valve with DC solenoid Space required to remove the solenoid coil 4 Dimension for valve with concealed manual override "N9" 5 Lock nut, wrench size 17, tightening torque M A = Nm Subplates (separate order) with porting pattern according to ISO 664 see data sheet Notice: he specified subplates are not approved for use with typeexamination tested safety valves according to ressure Equipment Directive 014/68/EU. Valve mounting screws (separate order) For reasons of stability, exclusively the following valve mounting screws may be used: Version "D/DW 10" 4 x ISO M1 x flZn/nc/480h/C with friction coefficient µ total = , tightening torque M A = 75 Nm ± 10%, material no. R Version "D/DW 0" 4 x ISO M16 x flZn/nc/480h/C with friction coefficient µ total = , tightening torque M A = 185 Nm ± 10%, material no. R Version "D/DW 0" 4 x DIN 91 - M18 x flZn/nc/480h/C with friction coefficient µ total = , tightening torque M A = 48 Nm ± 10%, material no. R Version "DC/DWC", "DC 10/DWC 10", "DC 0/DWC 0" and "D/DW" 4 x ISO M8 x flZn/nc/480h/C with friction coefficient µ total = , tightening torque M A = 1 Nm ± 10%, material no. R Notice: he tightening torques stated are guidelines when using screws with the specified friction coefficients and when using a manual torque wrench (tolerance ± 10 %). RE 580, edition: 017-0, osch Rexroth AG

16 16/ D; DW ressure relief valve Ordering code: ype-examination tested safety valves, version "D(W) E" 1) NG Designation Component marking D 10 5/ E ÜV.SV F.G.p DW 10 5/ 6 E D 0 5/ E ÜV.SV. 85..F.G.p DW 0 5/ 6 E D 0 N5/ E ÜV.SV. 85..F.G.p DW 0 N5/ 6 E Maximum flow q Vmax in l/min with pilot oil return external "" internal " " Set response overpressure p in bar Directional valve, normally closed A Directional valve, normally open Subplate mounting no code hreaded connection G Adjustment type for pressure adjustment Hand wheel (pressure adjustment sealed, unloading or setting of a lower response pressure possible) 1 With sealed protective cap (no adjustment/unloading possible) ressure 4 o be entered by the customer, e.g. pressure adjustment 0 bar and in 5 bar steps possible e.g. 150 ilot oil supply and pilot oil return 5 ilot oil supply and pilot oil return internal ; ) ilot oil supply internal, pilot oil return external (recommendation) ) Electrical specifications 6 See page e.g. EG4N9K4 Seal material 7 NR seals no code FKM seals V Information is entered at the factory 1) Component series 5, according to ressure Equipment Directive 014/68/EU ) Dash " " only necessary with version with attached directional valve (DW) ) ilot oil supply external "" not possible osch Rexroth AG, RE 580, edition: 017-0

17 ressure relief valve D; DW 17/ Deviating technical data: ype-examination tested safety valves, version "D(W) E" 1) hydraulic Version "D../.." "D../.." "DW../.." "DW../.." Maximum counter pressure ort bar 0 0 ort bar ) p < 15 ) p < 15 Maximum flow See table page 16 as well as characteristic curves page 18 0 Hydraulic fluid Mineral oil (HL, HL) according to DIN 5154 Hydraulic fluid temperature range C Viscosity range mm /s 1 0 1) Component series 5, according to ressure Equipment Directive 014/68/EU (For applications outside these parameters, please consult us!) ) See characteristic curves and explanatory notes for maximum admissible counter pressures on page 18 0 Safety instructions: ype-examination tested safety valves, version "D(W) E" 1) efore ordering a type-examination tested safety valve, it must be observed that for the desired response overpressure p, the maximum admissible flow q V max of the safety valve must be larger than the maximum possible flow of the system/accumulator to be secured. According to the ressure Equipment Directive 014/68/EU, the increase in the system pressure due to the flow must not exceed 10% of the set response pressure (see component marking page 16). Discharge lines (ports and ) of safety valves must end in a risk-free manner. An accumulation of fluids in the discharge system must not be possible (see data sheet AD000 A). If a lead seal at the safety valve is removed, the approval according to the ED will become invalid! he requirements of the ressure Equipment Directives 014/68/EU and of data sheet AD000 A must be generally observed! It is imperative to observe the application notes! In the plant, the response pressure specified in the component marking is set with a flow of 11 l/min. he maximum admissible flow stated in the component marking (= numerical value instead of the character "G" in the component marking, see page 16) must not be exceeded. It applies to: ilot oil return external ("") without counter pressure in the discharge line ; admissible counter pressure in the discharge line (port ) < 15 bar ilot oil return internal ("no code"). he maximum flow is only admissible without counter pressure in the discharge line (port ). With internal pilot oil return, the system pressure increases by the counter pressure in the discharge line (port ) due to the increasing flow (observe AD000 - data sheet; A, item 6.!) o ensure that this increase in system pressure caused by the flow does not exceed 10% of the set response pressure, the admissible flow has to be reduced dependent on the counter pressure in the discharge line (port ) see diagrams page 18 0). Notice: ossible unloading via the directional valve must not be applied for safety-relevant functions! If unloading is required for safety-relevant functions, an additional unloading valve must be installed. 1) Component series 5, according to ressure Equipment Directive 014/68/EU RE 580, edition: 017-0, osch Rexroth AG

18 18/ D; DW ressure relief valve Characteristic curves: Counter pressure in the discharge line In principle, the valve should be operated without counter pressure in the discharge line, if possible. In case of counter pressure in the discharge line, the maximum possible flow is reduced. here is a relationship between maximum counter pressure p in the discharge line and flow q V, which can be seen from the following characteristic curve. Characteristic curves for intermediate values of the response pressure which are not listed must be determined by means of interpolation. When the flow approaches zero, the maximum counter pressure p is in each case 10% of the response pressure. With increasing flow, the maximum counter pressure p decreases. Interpolation of intermediate values from the diagram 1. At the axis p, mark 1/10 of the value of p A.. Determine the next lower and the next higher characteristic curve for this point. he point marked at p divides the section between lower and higher characteristic curve on the p axis with a certain percentage.. At the q Vmax axis, divide the section between next lower and next higher characteristic curve in the same percentage as the section at the p axis. From the zero position flow on the q Vmax axis determined in that way, draw a straight line to the value on the p axis marked before. 4. Mark the system flow to be secured at the q Vmax axis. 5. Read off the maximum counter pressure for this value using the line at the p axis drawn before. osch Rexroth AG, RE 580, edition: 017-0

19 ressure relief valve D; DW 19/ Characteristic curves: Counter pressure in the discharge line Diagram for determining the maximum counter pressure p in the discharge line at port of the valve dependent on the flow q Vmax for valves D(W) -5/ E with different response pressures p A. Version "D(W) 10-5/ E" p A in bar p in bar , Characteristic curves q Vmax in l/min Response pressure p A in bar Characteristic curves for intermediate values can be generated by interpolation. Further explanations can be found on page 18 and 0. Version "D(W) 0-5/ E" p A in bar p in bar , , , Characteristic curves q Vmax in l/min Response pressure p A in bar Characteristic curves for intermediate values can be generated by interpolation. Further explanations can be found on page 18 and 0. RE 580, edition: 017-0, osch Rexroth AG

20 0/ D; DW ressure relief valve Characteristic curves: Counter pressure in the discharge line Diagram for determining the maximum counter pressure p in the discharge line at port of the valve dependent on the flow q Vmax for valves D(W) -5/ E with different response pressures p A. Version "D(W) 0-5/ E" p A in bar p in bar , , , Characteristic curves q Vmax in l/min Response pressure p A in bar Characteristic curves for intermediate values can be generated by interpolation. Further explanations can be found on page 18 and 0. p A Response pressure in bar p Maximum counter pressure in the discharge line (port ) in bar (sum of all possible counter pressures; also see AD000 data sheet - A) p max = 10 % x p A (with q V = 0 l/min) according to ED 014/68/EU Maximum flow in l/min q Vmax Determination of the maximum counter pressure Example 1 (with already existing characteristic curve): Flow of the system / accumulator to be secured: q Vmax = 00 l/min Safety valve set to: p A = 50 bar. Read off the maximum counter pressure p of approx. 1 bar from the diagram (see arrows, dashed line " "). Example (with interpolated characteristic curve): Flow of the system / accumulator to be secured: q Vmax = 00 l/min Safety valve set to: p A = 80 bar. Value to be marked at the axis referred to as p : 1/10 x 80 bar = 8 bar. Read off the maximum counter pressure p of approx. 1 bar from the diagram (see arrows, dashed/dotted line " "). osch Rexroth AG, RE 580, edition: 017-0

21 ressure relief valve D; DW 1/ Mating connectors according to DIN EN For details and more mating connectors see data sheet Material no. Color Without circuitry With indicator light V With rectifier V With indicator light and Zener diode suppression circuit 4 V gray R black R R R R General information he unloading function (directional valve function with version "DW") must not be used for safety functions! With version "", the lowest adjustable pressure (circulation pressure) is set in case of power failure or cable break. With version "A", the pressure limiting function is set in case of power failure or cable break. Hydraulic counter pressures in port with internal pilot oil return and/or port with external pilot oil return add 1:1 to the response pressure of the valve set at the pilot control. Example: ressure adjustment of the valve by spring preload (item 9 on page 5) in the pilot control valve/adjustment type p spring = 00 bar Hydraulic counter pressure in port with internal pilot oil return p hydraulic = 50 bar => Response pressure = p spring + p hydraulic = 50 bar RE 580, edition: 017-0, osch Rexroth AG

22 / D; DW ressure relief valve Further information Directional spool valve Data sheet 178 Directional seat valve Data sheet 058 Subplates Data sheet Hydraulic fluids on mineral oil basis Data sheet 900 Environmentally compatible hydraulic fluids Data sheet 901 Flame-resistant, water-free hydraulic fluids Data sheet 90 Flame-resistant hydraulic fluids - containing water (HFAE, HFAS, HF, HFC) Data sheet 90 Hydraulic valves for industrial applications Operating instructions Selection of the filters Information on available spare parts osch Rexroth AG Hydraulics Zum Eisengießer Lohr am Main, Germany hone +49 (0) 9 5 / 18-0 documentation@boschrexroth.de his document, as well as the data, specifications and other information set forth in it, are the exclusive property of osch Rexroth AG. It may not be reproduced or given to third parties without its consent. he 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. he 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. osch Rexroth AG, RE 580, edition: 017-0

23 ressure relief valve D; DW / Notes osch Rexroth AG Hydraulics Zum Eisengießer Lohr am Main, Germany hone +49 (0) 9 5 / 18-0 documentation@boschrexroth.de his document, as well as the data, specifications and other information set forth in it, are the exclusive property of osch Rexroth AG. It may not be reproduced or given to third parties without its consent. he 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. he 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. RE 580, edition: 017-0, osch Rexroth AG

24 4/ D; DW ressure relief valve Notes osch Rexroth AG Hydraulics Zum Eisengießer Lohr am Main, Germany hone +49 (0) 9 5 / 18-0 documentation@boschrexroth.de his document, as well as the data, specifications and other information set forth in it, are the exclusive property of osch Rexroth AG. It may not be reproduced or given to third parties without its consent. he 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. he 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. osch Rexroth AG, RE 580, edition: 017-0