Pressure relief valve, pilot-operated Type ZDB and ZDB RE 576 Edition: 06- Replaces: 05. Size 0 Component series 4X Maximum operating pressure 35bar [4600 psi] Maximum flow 00 l/min [6.4 US gpm] H7747 Features Sandwich plate valve Porting pattern according to ISO 440-05-04-0-05 and NFPA T3.5. R-00 D05 4 pressure ratings 6 directions of action, optional or pressure valve cartridges 4 adjustment types for pressure adjustment, optionally Rotary knob Bushing with hexagon and protective cap Lockable rotary knob with scale Rotary knob with scale Improved corrosion protection Contents Features Ordering code Symbols 3 Function, section 4 Technical data 5 Characteristic curves 6 Dimensions 7 0 Further information 0 RD 576, edition: 06-, Bosch Rexroth AG
/0 ZDB; ZDB Pressure relief valve Ordering code 0 0 03 04 05 06 07 08 09 0 Z DB 0 4X / * 0 Sandwich plate Z 0 pressure valve cartridge (only with version "VA", "VB". "VT" and "VP") no code pressure valve cartridges (only with version "VC" and "VD") 03 Pressure relief valve DB 04 Size 0 0 Relief function from to: 05 A VA P VP VT B VB A and B VC A B and B A VD Adjustment type for pressure adjustment 06 Rotary knob Bushing with hexagon and protective cap Lockable rotary knob with scale 3 ) Rotary knob with scale 7 07 Component series 40 49 (40 49: unchanged installation and mounting dimensions) 4X Pressure rating 08 Set pressure up to 50 bar [75 psi] 50 Set pressure up to 00 bar [450 psi] 00 Set pressure up to 00 bar [900 psi] 00 Set pressure up to 35 bar [4600 psi] 35 Corrosion resistance 09 None no code Improved corrosion protection (40 h salt spray test according to EN ISO 97) J3 ) Improved corrosion protection (70 h salt spray test according to EN ISO 97) J5 ) Seal material 0 NBR seals no code FKM seals V Observe compatibility of seals with hydraulic fluid used! (Other seals upon request) Further details in the plain text * ) H-key with material no. R90000858 is included in the scope of delivery ) Only with adjustment type "", however without protective cap Notes: To port X and Y bored according to ISO 440-05-05-0-05 (e.g. for pilot-operated directional valve NG0), version "SO30" applies at the end of the ordering code. Preferred types and standard units are contained in the EPS (standard price list). Bosch Rexroth AG, RE 576, edition: 06-
Pressure relief valve ZDB; ZDB 3/0 Symbols ( = component side, = plate side) Type ZDB 0 VA... Type ZDB 0 VB... P A B P A B Type ZDB 0 VP... Type ZDB 0 VT... P A B P A B Type ZDB 0 VC... Type ZDB 0 VD... P A B P A B Notice: Deviating from ISO 440, port T is in this data sheet called, port T is called. RD 576, edition: 06-, Bosch Rexroth AG
4/0 ZDB; ZDB Pressure relief valve Function, section Pressure valves of type ZDB and ZDB are pilot-operated pressure relief valves in sandwich plate design. They are used for limiting a system pressure. The valves basically consist of the housing (7) and one or two pressure valve cartridges. The system pressure can be set via the adjustment type (4). In the initial position the valves are closed. The pressure in channel A acts on the spool (). At the same time, pressure is applied to the spring-loaded side of the spool () via nozzle () and to the pilot poppet (6) via nozzle (3). If the pressure in channel A exceeds the value set at the spring (5), the pilot poppet (6) opens. Hydraulic fluid flows from the spring-loaded side of the spool (), nozzle (3) and channel (8) into channel T (). The resulting pressure drop moves the spool () and opens the connection from A to T (). In channel A, the pressure set at the spring (5) settles. 4 5 6 7 3 8 A P B Type ZDB 0 VA-4X/ V A P B = component side = plate side Bosch Rexroth AG, RE 576, edition: 06-
Pressure relief valve ZDB; ZDB 5/0 Technical data (For applications outside these parameters, please consult us!) general Weight Type ZDB kg [lbs] Approx..4 [5.3] Type ZDB kg [lbs] Approx..6 [5.7] Any Installation position Ambient temperature range C 0 +80 [ 4 +76] hydraulic Maximum operating pressure bar [psi] 35 [4600] Maximum set pressure bar [psi] 50 [75]; 00 [450]; 00 [900]; 35 [4600] Maximum flow l/min [US gpm] 00 [6.4] Hydraulic fluid See table below Hydraulic fluid temperature range C [ F] 0 +80 [ 4 +76] Viscosity range mm /s [SUS] 0 800 [60 370] Maximum admissible degree of contamination of the hydraulic fluid Class 0/8/5 ) cleanliness class according to ISO 4406 (c) Hydraulic fluid Classification Suitable sealing Standards Data sheet materials Mineral oils HL, HLP NBR, FKM DIN 554 900 Bio-degradable ) Insoluble in water HETG FKM ISO 5380 HEES FKM 90 Soluble in water HEPG FKM ISO 5380 Flame-resistant Water-free HFDU (glycol base) FKM HFDU (ester base) ) FKM ISO 9 90 HFDR FKM Containing water HFC (Fuchs Hydrotherm 46M, NBR Petrofer Ultra Safe 60) ISO 9 903 Important information on hydraulic fluids: Flame-resistant containing water: For further information and data on the use of other hydraulic Maximum pressure differential 0 bar, otherwise, increased fluids, please refer to the data sheets above or contact us. cavitation erosion There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). Life cycle as compared to operation with mineral oil HL, HLP 30 00% The ignition temperature of the hydraulic fluid used must be 50 K Maximum hydraulic fluid temperature 60 C higher than the maximum solenoid surface temperature. Bio-degradable and flame-resistant: If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system. ) The 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 www.boschrexroth.com/filter. ) Not recommended for corrosion-protected versions "J3" and "J5" (contains zinc) RD 576, edition: 06-, Bosch Rexroth AG
6/0 ZDB; ZDB Pressure relief valve Characteristic curves (measured with HLP46, ϑ oil = 40 ±5 C) Set pressure in bar [5076] [4000] [3000] [000] [000] 350 300 50 00 50 00 50 p E q V characteristic curves Minimum set pressure in bar [363] [300] [50] [00] [50] [00] [50] 5 0 5 0 5 p E min q V characteristic curves 4 3 [0] 0 0 0 40 60 80 00 [0] 0 0 0 40 60 80 00 [0] [5] [0] [5] [0] [6.4] Flow in l/min [0] [5] [0] [5] [0] [6.4] Flow in l/min Notice: The characteristic curves apply to the pressure at the valve output p = 0 bar across the entire flow range. VD (A to B) VA 3 VB, VC, VT 4 VP, VD (B to A) Bosch Rexroth AG, RE 576, edition: 06-
Pressure relief valve ZDB; ZDB 7/0 Dimensions: Type ZDB 0 VA, VP and VT (dimensions in mm [inch]) 8 [0.7] 6 4 5 L L L3 H H 3 [.6] 3 0 9 8,5 [0.059] 50 [.969] 48,5 [.909] [ 0.68] 5,7 [ 0.8] 5 0 [0.059],5 30 L4 L7 L6 3 8 5 3 F P F B [.378] 5 [.008] A B B3 35 B F4 F3 9 4 L5 [0.47] 7 4 x 6,7 [ 0.64] [0.0787] Item explanations and valve mounting screws see page 0. 0,0/00 [0.0004/4.0] Rzmax 4 Notes: To port X and Y bored according to ISO 440-05-05-0-05 (e.g. for pilot-operated directional valve NG0), version "SO30" applies at the end of the ordering code. Deviating from ISO 440, port T is in this data sheet called, port T is called. Required surface quality of the valve contact surface Type B B B3 H L L L3 L4 L5 L6 L7 VA, VP 69 [.7].5 [0.45] 0.7 [0.8] 6 [.0] 7 [8.94] VT 70 [.76] [0.47] 7 [.06] 5 [0.98] 8 [8.58] 03 [7.99] 94 [7.64] 7 [4.6] 05 [4.3] 57.6 [.7] 60.9 [.40] 50.3 [.98] 53.6 [.] 4 [0.6] 0.7 [0,07] 45.5 [.79] 3.5 [.8] RD 576, edition: 06-, Bosch Rexroth AG
8/0 ZDB; ZDB Pressure relief valve Dimensions: Type ZDB 0 VB (dimensions in mm [inch]) 7 [4.606] 7 [8.94] 8 [0.7] 03 [7.99] 5 4 6 50 [.969],5 [0.059] 0 9 8 3 3 [.6] 6 [.04] 0,5 [ 0.43] 0 5 [.8] [0.453] 30 8,5 [0.78] 4 [0.57] 58 [.8],5 F P F 5 8 3 69 [.77] [0.85] 0,7 A B 5 [.0] 35 [.378] F4 F3 [0.47] 9 [0.0787] 4 x 6,7 [ 0.64] [.] 8 50 [.97] 7 Item explanations and valve mounting screws see page 0. 0,0/00 [0.0004/4.0] Rzmax 4 Notes: To port X and Y bored according to ISO 440-05-05-0-05 (e.g. for pilot-operated directional valve NG0), version "SO30" applies at the end of the ordering code. Deviating from ISO 440, port T is in this data sheet called, port T is called. Required surface quality of the valve contact surface Bosch Rexroth AG, RE 576, edition: 06-
3 Pressure relief valve ZDB; ZDB 9/0 Dimensions: Type ZDB 0 VC and VD (dimensions in mm [inch]) 6 4 5 5 4 6 336 [3.3] 8 L L L3 8 [0.7] L4 L5 [0.7] 0 9 8 3 0 9 8,5 6 0,5 5,7 L6 5 0 L7 30 [.8] [.04] 50 [.969] [ 0.43] [ 0.68] [0.059] 8 3 9 35 [.378] 5 L8 [.0] 5 [0.47] 33 L0 F F4 [.99] P A B 4 x 6,7 [ 0.64] F F3 7 L L9 0,7 [0.465] [.74] [0.8],8 69,5 3 [0.0787] 8 Item explanations and valve mounting screws see page 0. 0,0/00 [0.0004/4.0] Rzmax 4 Notes: To port X and Y bored according to ISO 440-05-05-0-05 (e.g. for pilot-operated directional valve NG0), version "SO30" applies at the end of the ordering code. Deviating from ISO 440, port T is in this data sheet called, port T is called. Required surface quality of the valve contact surface Type L L L3 L4 L5 L6 L7 L8 L9 L0 L VC 3 [4.84] VD 3 [5.0] [4.37] 07 [4.0] [4.40] [4.40] 89 [3.50] 85 [3.30] 90 [3.54] 90 [3.54] 59 [.3] 56 [.0] 60 [.36] 56 [.0] 5 [.05] 49 [.93] 53 [.09] 49 [.93] [0.08] 6 [0.4] [0.04] 6 [0.4] RD 576, edition: 06-, Bosch Rexroth AG
0/0 ZDB; ZDB Pressure relief valve Dimensions Name plate Adjustment type "" 3 Adjustment type "" (with version "J3" and "J5" without protective cap) 4 Adjustment type "3" 5 Adjustment type "7" 6 Dimensions required to remove the key 7 Valve mounting bores 8 Lock nut SW4, tightening torque M A = 0 +5 Nm 9 Hexagon SW0 0 Identical seal rings for ports A, B, P,, (plate side) Sealing plate 80 x 70 x.5 [.76 x 3.5 x 0.06] (only with version "VA" and "VP") Countersinks (only with version "VT") 3 Versions "VA" and "VP" 4 Version "VT" 5 Hexagon SW30, tightening torque M A = 50 Nm [36.8 ft-lbs] component side porting pattern according to ISO 440-05-04-0-05 and NFPA T3.5. R-00 D05 plate side porting pattern according to ISO 440-05-04-0-05 and NFPA T3.5. R-00 D05 Valve mounting screws (separate order) Version "J3" 4 hexagon socket head cap screws ISO 476 - M6-0.9-CM-Fe-ZnNi-5-Cn-T0-H-B friction coefficient µ total = 0.09 0.4 Version "J5" 4 hexagon socket head cap screws ISO 476 - M6-0.9-CM-Fe-ZnNi-8-Cn-T0-H-B friction coefficient µ total = 0.09 0.4 Without corrosion protection 4 hexagon socket head cap screws ISO 476 - M6-0.9 with friction coefficient µ total = 0. 0.7 Notice: Length and tightening torque of the valve mounting screws must be calculated according to the components mounted under and over the sandwich plate valve. Accessories (separate order) Denomination Protective cap Material no. R9003550 Further information Pressure relief valve, pilot-operated Data sheet 573 Hydraulic fluids on mineral oil basis Data sheet 900 Environmentally compatible hydraulic fluids Data sheet 90 Flame-resistant, water-free hydraulic fluids Data sheet 90 Flame-resistant hydraulic fluids - containing water (HFAE, HFAS, HFB, HFC) Data sheet 903 Use of non-electrical hydraulic components in an explosive environment (ATEX) Data sheet 070 Hydraulic valves for industrial applications Operating instructions 07600-B Selection of the filters www.boschrexroth.com/filter Bosch Rexroth AG Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany Phone +49 (0) 93 5 / 8-0 documentation@boschrexroth.de www.boschrexroth.de This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth AG. 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. Bosch Rexroth AG, RE 576, edition: 06-
Pressure relief valve ZDB; ZDB /0 Notes Bosch Rexroth AG Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany Phone +49 (0) 93 5 / 8-0 documentation@boschrexroth.de www.boschrexroth.de This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth AG. 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. RD 576, edition: 06-, Bosch Rexroth AG
/0 ZDB; ZDB Pressure relief valve Notes Bosch Rexroth AG Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany Phone +49 (0) 93 5 / 8-0 documentation@boschrexroth.de www.boschrexroth.de This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth AG. 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. Bosch Rexroth AG, RE 576, edition: 06-