Pressure relief valve, direct operated Type DBD

Transcription

1 Industrial Hydraulics Electric Drives and Controls Linear Motion and Assembly echnologies neumatics Service Automation Mobile Hydraulics RE /06.02 Replaces: Material No.: a ressure relief valve, direct operated ype DBD Nominal sizes 6 to 30 Series 1X Maximum operating pressure 630 bar Maximum flow 330 L/min H5585 ype DBD 1X/ Overview of contents Contents age Features 1 Ordering details 2 Function, section, symbol 3 echnical data 4 Characteristic curves 5 Unit dimensions 6 to 9 Design tested pressure relief valves 9 and 10 Features As cartridge valve (cartridge) For threaded connections For manifold mounting 3 pressure adjustment elements, optional: Set screw with hexagon and protective cap Rotary knob / hand wheel Lockable rotary knob Note: Design tested pressure relief valves to directive 97/23/EG (pressure components directive) ype DBD../..E, series 1X. For characteristic curves and ordering details see pages 9 and by Bosch Rexroth AG, Industrial Hydraulics, D Lohr am Main All rights reserved. No part of this document may be reproduced or stored, processed, duplicated or circulated using electronic systems, in any form or by any means, without the prior written authorisation of Bosch Rexroth AG. In the event of contravention of the above provisions, the contravening party is obliged to pay compensation. his document was prepared with the greatest of care, and all statements have been examined for correctness. his document is subject to alterations for reason of the continuing further developments of products. No liability can be accepted for any incorrect or incomplete statements. DBD 1/10 RE /06.02

2 Ordering details ressure relief valve, direct operated Adjustment element Nominal size Set screw with hexagon = S and protective cap Rotary knob 1) = H Hand wheel 2) = H Lockable rotary knob 1, 3) = A DBD 1X * 1) With nominal sizes 15 and 20 only available for pressure stages 25, or bar. 2) Only available for pressure stages 25, or bar. 3) Key with Material No is included within the scope of supply. Nominal size = 6 = 8 = 10 = 15 = 20 = 25 = 30 E. g. (connection) G1/4 G3/8 G1/2 G3/4 G1 G1 1/4 G1 1/2 = 10 Connection type As cartridge valve (cartridge) = K For threaded connections = G For manifold mounting = Series 10 to 19 = 1X (10 to 19: unchanged installation and connection dimensions) ressure stage ressure setting up to 25 bar = 25 ressure setting up to bar = ressure setting up to bar = ressure setting up to bar = ressure setting up to 315 bar = 315 ressure setting up to bar = ressure setting up to 630 bar = 630 NBR seals = No code FKM seals = V (other seals on request) Attention! he compatibility of the seals and pressure fluid has to be taken into account! Further details in clear text = Available referred types and standard components are highlighted in the RS (Standard rice list). RE RD / / /10 DBD

3 Function, section, symbol he DBD pressure relief valves are direct operated poppet seat valves. hey are used to limit the pressure in a hydraulic system. he valves mainly consists of sleeve (1), spring (2), poppet with damping spool (3) (pressure stages 25 to bar) or ball (4) (pressure stage 630 bar) and adjustment element (5). he setting of the system pressure is infinitely variable via the adjustment element (5). he spring (2) pushes the poppet (3) or ball (4) onto the seat. he port is connected to the system. he pressure present in the system is applied to the poppet area (or ball). If the pressure in port rises above the value set at the spring (2), then the poppet (3) or ball (4) opens against the spring (2). Now pressure fluid flows from port into port. he stroke of the poppet (3) is limited by a pin (6). In order to obtain good pressure settings over the entire pressure range, the pressure range is split into 7 pressure stages. A pressure stage corresponds to a certain spring for a maximum operating pressure which may be set with it. ype DBDH..K 1X/ ressure stages 25 to bar (poppet seat valve) ype DBDH 10 K1X/ ressure stage 630 bar (ball seat valve, only NS 10) Symbol DBD 3/10 RE / /06.02

4 echnical data (for applications outside these parameters, please consult us!) General Installation Optional Ambient temperature range C 30 to +80 (NBR seals) 20 to +80 (FKM seals) Minimum tensile strength of the housing material R m N/mm 2 2 Weight See pages 6 to 9 Hydraulic Operating pressure range NS 6 and and and 30 Inlet bar Up to Up to 630 Up to Up to 315 Outlet bar Maximum flow See characteristic curves on page 5 ressure fluid Mineral oil (HL, HL) to DIN ) ; Fast bio-degradable pressure fluids to VDMA (also see RE ); 1) Suitable for NBR and FKM seals HEG (rape seed oil) 1) ; HEG (polyglycols) 2) ; HEES (synthetic 2) Only suitable for FKM seals ester) 2) ; other pressure fluids on request ressure fluid temperature range C 30 to + 80 (for NBR seals) Degree of contamination Viscosity range mm 2 /s 10 to to + 80 (for FKM seals) Maximum permissible degree of contamination of the pressure fluid is to NAS 1638 class 9. We therefore recommend a filter with a minimum retention rate of ß RE RD / / /10 DBD

5 Characteristic curves (measured with HL46, ϑ oil = 40 C ± 5 C) NS 6 NS 8 and Lowest settable pressure NS 15 and NS 25 and Attention! he characteristic curves are valid for the output pressure = zero over the entire flow range and are measured without consideration of the housing pressure drop! he characteristic curves refer to the given pressure stages (e.g. bar). he further the pressure setting value is from the nominal pressure stage (e.g. < bar), the greater the pressure increase with the flow. DBD 5/10 RE /08.97

6 Unit dimensions: cartridge valve (cartridge, dimensions in mm) A/F SW3 2A/F SW2 1A/F; SW1; M A SW4 4A/F 3A/F SW3 2A/F SW2 1A/F; SW1; M A Installation cavity α1 ØD19-0,2 1) L28 ØD16 4 ØD13 ØD11 D14 ØD15 Rz 16 ØD17 ØD18 11 L22 ØD12 L23 ØD11 L17 SW5 5A/F SW3 3A/F 2A/F SW2 1A/F; SW1; M A Ø 2,5 L17 L20 6A/F SW6 1A/F; SW1; M A L21 L20 L18 L19 3A/F SW3 2A/F SW2 1A/F; SW1; M A ØD12 L18 L19 1) Max. dim. L ,05 A 12 A L25 L26 L27 L29 L30 L31 Rz 16 0,5 x 45 0,1 A 1.1 Adjustment element S Set screw hexagon and protective cap; Internal hexagon (up to NS 20) External hexagon (NS 30) 1.2 Adjustment element H Rotary knob (up to NS 20) Hand wheel (NS 30) 1.3 Adjustment element A Lockable rotary knob up to NS 10 (NS 20 to bar) 4 Connection port optional about the circumference or at the bottom 5 Connection port optional about the circumference 6 ype code 7 ressure stage (stamped on) 8 Marking (adjustment of zero position after the valve has been screwed in; subsequent fixing of the ring is by a horizontal movement until it locks into place on the 6A/F plug) 9 Fitting depth 10 Locknut 11 Space required to remove the key 12 Minimum tensile strength of the housing material: R m 2 N/mm 2 Cartridge valve NS ØD11 ØD12 ØD13 L17 L18 L19 L20 L21 L22 L23 L24 1A/F M A, approx. 2A/F 3A/F 4A/F 5A/F 6A/F Weight , Nm approx.0.4 kg Nm approx. 0.5 kg Nm approx. 1 kg Nm approx. 2.2 kg Installation cavity NS D14 ØD15 ØD16 ØD17 ØD18 ØD19 L25 L26 L27 L28 L29 L30 L31 α1 6 M28 x H ,9 +0, ± ,2 10 M35 x H ,9 +0, ± ,2 20 M45 x H ,9 +0, ± ,2 30 M60 x 2 55 H ,9 +0, ± ,2 RE RD / / /10 DBD

7 Unit dimensions: subplate mounting (dimensions in mm) ØD L3 Ø6 L1 L4 () L2 ØD H2 L8 ØD8; 2 L10 L17 D9; 3 L7 L9 L11 L12 L12 ØD11; 6 H3 () B1 B R1 B3 B4 L18 L6 L5 2 4 L13 L14 L15 L16 D7; 5 ØD5 ØD6; 4 0,01/mm R max4 Required surface finish of the mating piece Valve fixing screws (must be ordered separately) M A in Nm NS 6 M6 x DIN approx. 14 NS 10 M8 x 70 DIN approx. 34 NS 20 M8 x 90 DIN approx. 34 NS 30 M10 x 110 DIN approx. 68 For dimensions of the adjustment elements see page Adjustment element S Set screw with hexagon and protective cap Internal hexagon (up to NG 20) External hexagon (NS 25, 30) 2 Name plate 3 4 valve fixing holes 4 Connection port, optional (e.g. for pressure measuring, for tightening torque see table on page 8) 12 For subplate type codes see below 13 Valve contact area 14 anel cut-out 15 Locating pin (only for design tested valves) ressure relief valve ort NS B1 B2 ØD3 H2 L1 L2 L3 L4 L5 L6 L18 () Weight G 1/4 approx. 1.5 kg G 1/2 approx. 3.7 kg G 3/4 approx. 6.4 kg G 1 1/4 approx kg Subplate NS ype B3 B4 ØD5 ØD6 D7 ØD8 D9 ØD10 ØD11 H3 6 G / M6 25 G 1/ (G 301/01) G 302/ M8 (28) 34 (G 3/8) G 1/ (G 303/01) G 304/ M8 (42) 47 (G 3/4) G 1 (15) (G 305/01) G 306/ M10 (56) 61 (G 1 1/4) G 1 1/ Subplate NS L7 L8 L9 L10 L11 L12 L13 L14 L15 L16 L R1 Weight kg (15) kg (45) (94) (12) kg , (113) , kg DBD 7/10 RE / /08.97

8 Unit dimensions: threaded connections (dimensions in mm) ØD1 D2 B1 4 () H1 H2 L1 L2 D4; 1 2 L3 L5 L4 ØD L6 () B1 B2 ightening torques for the fittings: M A in Nm M A max in Nm for plug for plug (os. 4) G1/ G3/ G1/ G3/4 80 G G 1 1/ G 1 1/ Adjustment element S Set screw with hexagon and protective cap Internal hexagon (up to NS 20) External hexagon (NS 25, 30) 2 Name plate 3 4 valve fixing screws 4 Connection port, optional (e.g. for pressure measuring) for dimensions see dimension D2, for tightening torques see table NS B1 B2 ØD1 D2 ØD3 D4 H1 H2 L1 L2 L3 L4 L5 L6 1 Weight G 1/4 6.6 M approx. 1.5 kg (8) (28) 34 (G 3/8) G 1/2 9 M approx. 3.7 kg (15) (42) 47 (G 3/4) G1 9 M (4) approx. 6.4 kg (25) (56) 61 (G 1 1/4) G 1 1/2 11 M approx kg For types and dimensions of the adjustment elements see page 6. RE RD / / /10 DBD

9 Unit dimensions: valve panel cut-out for design tested valves (dimensions in mm) H1 ØD2 H2 R1 B2 NS B1 B2 ØD1 D2 ØD3 H13 ØD4 min R1 min , ØD1 Note: For the valve types DBDH.K./ E the hand wheel has to be removed, subsequently refitted, before fitting the cartridge onto the valve panel. ØD1 B1 Design tested pressure relief valves type DBD../..E directive 97/23/EG (pressure component directive) Operaing pressure in bar NS6 Values which are below the characteristic curve in the dark area cannot be achieved with this valve NS10 Values which are below the characteristic curve in the dark area cannot be achieved with this valve Values which are below 80 the characteristic curve 60 in the dark area cannot be achieved with this 40 valve DBD 9/10 RE / /06.02

10 Design tested pressure relief valves type DBD../..E directive 97/23/EG (pressure component directive) 316 NS20 80 Values which are below 60 the characteristic curve in the dark area cannot be achieved with this 40 valve NS30 80 Values which are below 60 the characteristic curve in the dark area cannot 40 be achieved with this valve NS Description Component code DBDS 6K1X/ E DBDH 6K1X/ E 6 DBDS 6G1X/ E α DBDH 6G1X/ E ÜV.SV F. w G.p. DBDS 61X/ E DBDH 61X/ E DBDS 8G1X/ E DBDH 8G1X/ E 10 DBDS 10K1X/ E α w DBDH 10K1X/ E ÜV.SV F. G.p. DBDS 10G1X/ E ÜV.SV ,5.F.30.p. 1) DBDH 10G1X/ E DBDS 101X/ E DBDH 101X/ E ressure in the type code must be entered by the customer Details entered by the manufacturing plant 1) Component identification for DBD. 10.1X/ ; bar < p 630 bar NS Description Component code DBDS 15G1X/ E DBDH 15G1X/ E DBDS 20K1X/ E 20 DBDH 20K1X/ E DBDS 20G1X/ E ÜV.SV F.α w.p. DBDH 20G1X/ E DBDS 201X/ E DBDH 201X/ E DBDS 25G1X/ E DBDH 25G1X/ E DBDS 30K1X/ E 30 DBDH 30K1X/ E DBDS 30G1X/ E ÜV.SV F.α w.p. DBDH 30G1X/ E DBDS 301X/ E DBDH 301X/ E Important notes: he return lines from safety valves must vent in a safe manor. Fluid must not be able to gather in a venting system (tank pressure = 0 bar!) Checks have to be carried out to see whether the pressure component derective 97/23/EG applies to the entire system or only to individual components. It is recommended that the design tested valve cartridges are protected against unauthorised removal from the housing/manifold block by wiring through the hole which is present in the cartridge hexagon and by securing the wire with a seal. Bosch Rexroth AG Industrial Hydraulics D Lohr am Main Zum Eisengießer 1 D Lohr am Main elefon / 18-0 elefax / elex documentation@boschrexroth.de Internet Bosch Rexroth Limited Cromwell Road, St Neots, Cambs, E19 2ES el: / Fax: / info@boschrexroth.co.uk 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. It must be remembered that our products are subject to a natural process of wear and ageing. RE / /10 DBD