Check valve, pilot operated. Type SV and SL. Features. Contents. RE Edition: Replaces:

Transcription

1 Check valve, pilot operated Type SV and SL RE 68 Edition: 07-0 Replaces: 07-0 Size 0, 0, and Component series Maximum operating pressure 5 bar Maximum flow 550 l/min H5558 Features For subplate mounting Porting pattern according to ISO (NG0), ISO (NG0), ISO (NG) For threaded connection For the leakage-free blocking of one actuator port ttachment possibility for directional spool valve or directional seat valve, optional With internal or external pilot oil return, optional Version with pre-opening for dampened release, optional Various cracking pressures, optional Check valve cartridge separately available Corrosion-resistant housing design, optional Contents Features Ordering code, Symbols Function, section 5, 6 Technical data 7 Characteristic curves 8, 9 Calculation of the pilot pressure 0 Dimensions 5 Circuit examples 5 Inductive position switch 6 Mating connectors 7 Further information 8 RE 68, edition: 07-0, osch Rexroth G

2 /8 SV; SL Check valve Ordering code S / * 0 Check valve S 0 Internal pilot oil return V External pilot oil return L 0 Size 0 0 Size 0 0 Size 0 Type of connection 0 Subplate mounting P Threaded connection G 05 With pre-opening Without pre-opening Cracking pressure 06 See characteristic curves ( ), page 8 and 9 07 Component series 0 9 (0 9: unchanged installation and mounting dimensions) 08 Without attachment possibility for directional spool or seat valve no code With attachment possibility for directional spool or seat valve (NG6) 6U ) Spool position monitoring 09 Without position switch no code With position switch QMG For more information see page 6 Orifice fitting channel (version "6U" only) 0 Orifice Ø0.8 mm in channel (standard) 08 Orifice Ø** in channel ) ** Orifice fitting channel (version "6U" only) Channel closed (standard) 99 Orifice Ø** in channel ) ** Orifice fitting channel T (version "6U" only) Without orifice (standard) T00 Orifice Ø** in channel T ) T** Orifice fitting channel P (version "6U" only) Without orifice (standard) P00 Orifice Ø** in channel P ) P** Orifice fitting channel (version "6U" only) Channel closed (standard) 99 Orifice Ø** in channel ) ** Orifice fitting channel 5 Channel closed (standard, version "SV" only) 99 Channel open (standard, versions "SL" and "SL...6U" only) 00 Orifice Ø** in channel ) ** osch Rexroth G, RE 68, edition: 07-0

3 Check valve SV; SL /8 Ordering code S / * Seal material 6 NR seals N FKM seals V Observe compatibility of seals with hydraulic fluid used. (Other seals upon request) Corrosion resistance 7 None no code Improved corrosion protection (0 h salt spray test according to EN ISO 97) J 8 Standard no code Pilot pressure p pilot from channel SO68 Control open spool with shaft sealing (between channel and ) SO86 Connection thread (versions with threaded connection "G" only) 9 Pipe thread "G" according to ISO 8- no code Pipe thread "UNF/UN" according to NSI/SME. / 0 Further details in the plain text * ) Version "SL" and sizes 0 and only. ) Order example: ** = dimension in mm x 0 e.g. orifice Ø. mm in channel T = "T" Notice: Preferred types and standard units are contained in the EPS (standard price list). RE 68, edition: 07-0, osch Rexroth G

4 /8 SV; SL Check valve Symbols Version "SV" (internal pilot oil return) Version "SL" (external pilot oil return) ** Version "SO68" P T ** P** T** With directional spool valve type WE 6 D Version "SL 6U" With directional spool valve type WE 6 P T P T 08 ** P** T** 08 ** P** T** With directional seat valve type M-SEW 6 C With directional seat valve type M-SEW 6 U P T P T 08 ** P** T** 08 ** P** T** osch Rexroth G, RE 68, edition: 07-0

5 Check valve SV; SL 5/8 Function, section The isolator valve type SV/SL is a pilot operated check valve for subplate mounting or threaded connection. It is used for the leakage-free blocking of one actuator port, also in case of longer standstill times. The valve basically consists of a housing (), a seat poppet (), a compression spring (), a control spool () as well as of an optional pre-opening as ball seat valve (5). The seat valve can be flown through from to without external pilot pressure. In the opposite direction, the seat valve closes hydraulically tight. Condition: p > p + cracking pressure (compression spring). sufficiently high pilot pressure at port moves the control spool () in the direction of the ball seat valve (5) (version "") and pushes the seat poppet () out of its seat. This allows for a free flow in both directions (active keeping open). In order to ensure that the seat valve actively opens, the pressure ratios on both sides of the control spool () are just as important as the area ratios at the control spool () or seat poppet () This results in the following available options for the types SV (large annulus area (8) connected with p ) or SL (small annulus area (9)) as well as for the versions with pre-opening "" and without pre-opening "". Version "" (with pre-opening) This valve is provided with an additional pre-opening. y pressurization at the port, the control spool () is moved to the right. s a result, the ball (5) is pushed off the seat first and the seat poppet () afterwards. Notices: Version "": The two-stage set-up with an increased control open ratio means even low pilot pressure can be unloaded securely. voidance of switching shocks due to dampened decompression of the pressure volume on the actuator side. Version "": In case of valves without pre-opening, the included pressure volume may be unloaded suddenly. Resulting switching shocks may lead to premature wear on installed components, as well as noise formation. The modification of type SV to type SL is possible by exchange of plugs (0) and (). One of the both plugs must always be installed. Type SL..P.-/... (with pilot oil return, without pre-opening) ; 5. NG Plug (0) Plug () 0 M M6 0 M M6 M M6 Version "SO86" 6 rea (seat poppet) 7 rea (ball) 8 rea (control spool) 9 rea (control spool) Type SV 0 P.-/... (without pilot oil return, with pre-opening) RE 68, edition: 07-0, osch Rexroth G

6 6/8 SV; SL Check valve Function, section: Version "6U" (with built-on directional valve) t direct operated, pilot operated check valves type SL with built-on directional valve, the control spool () may be controlled directly via the directional valve to open the seat poppet () against the system pressure, i.e. the blocking direction. Notice: When ordering the directional valve, please observe the different position of port at versions "P" and "G" (porting pattern rotated by 80 at version "G", see pages and ) Type SL..P.-/6U... (with pilot oil return, without pre-opening) 6 rea (seat poppet) 8 rea (control spool) 9 rea (control spool) osch Rexroth G, RE 68, edition: 07-0

7 Check valve SV; SL 7/8 Technical data (For applications outside these parameters, please consult us!) general Sizes NG 0 0 Weight Subplate mounting kg Threaded connection kg Installation position ny mbient temperature range C (NR seals) (FKM seals) MTTFd values according to EN ISO 89 ears 50 (for further details, see data sheet 080) Maximum storage time Months (if the storage conditions are observed; refer to the operating instructions ) hydraulic Maximum operating pressure bar 5 Maximum flow l/min See characteristic curves on page 8 and 9 Pilot pressure bar 5 5 Hydraulic fluid see table below Hydraulic fluid temperature range C (NR seals) (FKM seals) Viscosity range mm /s Maximum admissible degree of contamination of the hydraulic fluid Class 0/8/5 ) cleanliness class according to ISO 06 (c) Direction of flow Free from, from by opening Pilot volume Port cm Port (version "L" only) cm Control areas (areas according to sectional drawing on pages 5 and 6) rea cm rea cm rea cm rea cm Hydraulic fluid Classification Suitable sealing Standards Data sheet materials Mineral oils HL, HLP, HLPD, HVLP, HVLPD NR, FKM DIN io-degradable Insoluble in water HETG FKM ISO 580 HEES FKM 90 Soluble in water HEPG FKM ISO 580 Flame-resistant Water-free HFDU (glycol base) FKM HFDU (ester base) FKM ISO 9 90 containing water HFC (Fuchs Hydrotherm 6M, NR Petrofer Ultra Safe 60) ISO 9 90 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 Life cycle as compared to operation with mineral oil HL, HLP (temperature, pressure range, life cycle, maintenance intervals, etc.). 0 00% The ignition temperature of the hydraulic fluid used must be 50 K Maximum hydraulic fluid temperature 60 C higher than the maximum surface temperature. io-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 filters, see RE 68, edition: 07-0, osch Rexroth G

8 8/8 SV; SL Check valve Characteristic curves: Subplate mounting (measured with HLP6, ϑ Oil = 0 ±5 C) p-q V characteristic curves NG0 NG Pressure differential in bar Pressure differential in bar Flow in l/min Flow in l/min Pressure differential in bar 0 7,5 5,5 0 7,5 5,5 NG0 Cracking pressure in bar NG0 NG0 NG Flow in l/min 50 Pilot pressure/load pressure characteristic curves without pre-opening with pre-opening Pilot pressure in bar Pilot pressure in bar Load pressure in bar Load pressure in bar 5 Scatter range 6 Limit value 7 Valve poppet 8 Pre-opening osch Rexroth G, RE 68, edition: 07-0

9 Check valve SV; SL 9/8 Characteristic curves: Threaded connection (measured with HLP6, ϑ Oil = 0 ±5 C) p-q V characteristic curves Pressure differential in bar NG Pressure differential in bar NG Flow in l/min Flow in l/min Pressure differential in bar NG0 0 7,5 5,5 0 7,5 5,5 Cracking pressure in bar NG0 NG0 NG Flow in l/min Pilot pressure/load pressure characteristic curves without pre-opening with pre-opening Pilot pressure in bar Pilot pressure in bar Load pressure in bar Load pressure in bar 5 Scatter range 6 Limit value 7 Valve poppet 8 Pre-opening RE 68, edition: 07-0, osch Rexroth G

10 0/8 SV; SL Check valve Calculation of the pilot pressure p pilot depending on p and p Version (with pre-opening) alance of forces: Detailed formula p + p pilot p p F p p * ( ) = 0 Version (without pre-opening) alance of forces: Detailed formula p + p pilot p p F p p * ( ) = 0 p pilot = p + pf + p + p * p pilot = p + pf + p + p * Simplified formula (ssumption p = 0) Simplified formula (ssumption p = 0) p pilot p F + p p pilot p F + p p * Depending on the type (for type SL: p * = 0) p pilot p p p F Pilot pressure Working pressure in Working pressure in Cracking pressure (spring) For areas, see sectional drawing on page 5; Control area ratios, see page 7 osch Rexroth G, RE 68, edition: 07-0

11 Check valve SV; SL /8 Dimensions: Subplate mounting (dimensions in mm),5 H H H L L L 5 6 Ø Ø6 L5 L7 L8 L L6 L9 L0 L ,0/00 7. L L L 9 Rzmax Required surface quality of the valve contact surface Type NG L L L L L5 L6 L7 L8 L9 L0 L L L L SV SL Type NG 5 H H H SV SL For item explanations, valve mounting screws and subplates see page 5. RE 68, edition: 07-0, osch Rexroth G

12 /8 SV; SL Check valve Dimensions: Threaded connection (dimensions in mm) H H,5 L L 5 L 6 Ø 7. L5 L L6 L8 L7 L0 L 0 L Connections NG,, "G" "UNF/UN" "G" "UNF/UN" 0 G/ /-6 UNF 0 G 5/6- UN G/ 7/6-0 UNF G / 7/8- UN Type NG L L L L L5 L6 L7 L8 L9 L0 L H H SV SL For item explanations, valve mounting screws and connection adapters see page 5. osch Rexroth G, RE 68, edition: 07-0

13 Check valve SV; SL /8 Dimensions: Version "6U", subplate mounting (dimensions in mm) H H L5 L7 L8 L L L6 L9 L0 8 L L H 5 6 L Ø Ø6 5 F T F F P G F 0,0/00 Rzmax Required surface quality of the valve contact surface L L L 7. NG L L L L L5 L6 L7 L8 L9 L0 L L For item explanations, valve mounting screws and subplates see page 5. NG L L H H H RE 68, edition: 07-0, osch Rexroth G

14 /8 SV; SL Check valve Dimensions: Version "6U", threaded connection (dimensions in mm) H H L L 5 L 6 Ø 7. L5 L L6 L8 L7 L0 L F G P F 0 F T F L L9 7. Connections NG,, "G" "UNF/UN" "G" "UNF/UN" 0 G 5/6- UN G / 7/8- UN G/ 7/6-0 UNF NG L L L L L5 L6 L7 L8 L9 L0 L L H H osch Rexroth G, RE 68, edition: 07-0 For item explanations, valve mounting screws and connection adapters see page 5.

15 Check valve SV; SL 5/8 Dimensions Port at version "SL" (closed at version "SV") Name plate Locking pin Identical seal rings for ports and and 5 Valve with cracking pressure version "" and "" (dimension L) 6 Valve with cracking pressure version "" and "" (dimension L) 7. 6 valve mounting bores at NG 7. valve mounting bores 8 Porting pattern according to ISO Version without position switch Tightening torque M = 0 Nm (NG0), screwed in - medium-strength thread locker; Tightening torque M = 70 Nm (NG0 and 0), screwed in - medium-strength thread locker; 0 Version with position switch "QMG" (circuitry see page 6) Directional seat valve type M-SEW 6 (data sheet 058) Directional spool valve type WE 6 (data sheet 78) Porting pattern according to ISO Subplates (separate order) with porting pattern according to ISO (NG0), ISO (NG0), ISO (NG) see data sheet 500. Valve mounting screws (separate order) NG0 x ISO 76 - M0 x NG0 x ISO 76 - M0 x NG 6 x ISO 76 - M0 x (at friction coefficient µ total = 0.); tightening torque M = 75 Nm ±0% (please adjust for different surface) Connection adapter / reducing pieces Material number Male thread Internal thread Seal (separate order) NR FKM R G G/ R R R G / G / R R90005 Circuit examples Function: "Load locking"; inlet side unloading Function: Unlocking with external pilot pressure (version "SO68") P T P T RE 68, edition: 07-0, osch Rexroth G

16 Check valve SV; SL 6/8 Inductive position switch type QM: Electrical connection The electric connection is realized via a -pole mating connector (separate order, see page 7) with connection thread M x. Connection voltage: V +0%/-5%, direct voltage dmissible residual ripple: 0% Load capacity: Maximum 00 m Switching outputs: PNP transistor outputs, load between switching outputs and GND + GND Pinout: + V Switching output: 00 m 0 V, GND Switching output: 00 m Inductive position switch type QM: Switching logics Overlap Leakage oil PIN 0 PIN 0 0 Spool stroke in % RE 68, edition: 07-0, osch Rexroth G

17 M x Ø,5 0 M x Ø9,6 M x Ø9,6 7/8 SV; SL Check valve Mating connectors (dimensions in mm) Mating connector suitable for K -pole, M x with screw connection, cable gland Pg 9. Material no. R Mating connector suitable for K -pole, M x with screw connection, cable gland Pg 9, angled. Housing rotatable by x 90 in relation to the contact insert. Material no. R Mating connector suitable for K-m -pole, M x with potted-in PVC cable, m long. Line cross-section: x 0. mm Core marking: Material no. R brown white blue black,5 For further information refer to data sheet osch Rexroth G, RE 68, edition: 07-0

18 8/8 SV; SL Check valve Further information Check valves, pilot operated (NG6) Data sheet 60 Check valves, pilot operated (NG5) Data sheet 8 Directional spool valve Data sheet 78 Directional seat valve Data sheet 058 Subplates Data sheet 506 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 (HFE, HFS, HF, HFC) Data sheet 90 Reliability characteristics according to EN ISO 89 Data sheet 080 Hexagon socket head cap screw, metric/unc Data sheet 0896 Hydraulic valves for industrial applications Operating instructions Selection of filters Information on available spare parts osch Rexroth G Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany Phone +9 (0) 9 5 / 8-0 documentation@boschrexroth.de This document, as well as the data, specifications and other information set forth in it, are the exclusive property of osch 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. osch Rexroth G, RE 68, edition: 07-0

19 Check valve SV; SL 9/8 Notes osch Rexroth G Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany Phone +9 (0) 9 5 / 8-0 documentation@boschrexroth.de This document, as well as the data, specifications and other information set forth in it, are the exclusive property of osch 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. RE 68, edition: 07-0, osch Rexroth G

20 0/8 SV; SL Check valve Notes osch Rexroth G Hydraulics Zum Eisengießer 9786 Lohr am Main, Germany Phone +9 (0) 9 5 / 8-0 documentation@boschrexroth.de This document, as well as the data, specifications and other information set forth in it, are the exclusive property of osch 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. osch Rexroth G, RE 68, edition: 07-0