2-way flow control valve Type 2FRM 6

Transcription

1 RE /0.0 Replaces:.0 -way flow control valve Type FRM Nominal size Series X Maximum operating pressure bar ) Maximum flow L/min ) When used in conjunction with a rectifier plate up to 0 bar H//D /97 + H//D /97 Types FRM.-X/ V and FRM S-X/ V Overview of contents Contents age Features Ordering details, preferred types Symbols Function, section, Technical data, Characteristic curves Unit dimensions 7 to 9 Features orting pattern to DIN 0, Form, without locating pin hole (standard) orting pattern to ISO 0 and CETO R H, with locating pin hole, (ordering detail.../0 at the end of the valve type code) For subplates see catalogue sheet RE 0 (separate order), see page 7 External closing of the pressure compensator, optional anel mounting with a G / connection thread Check valve, optional Rotary knob with scale, optional lockable 00 by osch Rexroth G, Industrial Hydraulics, D-97 Lohr am Main ll rights reserved. No part of this document may be reproduced or stored, processed, duplicated or circulated using electronic systems, in any form or by means, without the prior written authorisation of osch Rexroth G. In the event of contravention of the above provisions, the contravening party is obliged to pay compensation. FRM /0 RE /0.0

2 Ordering details: -way flow control valve FRM X/ V * -way flow control valve Nominal size = With external closing of the pressure compensator = (suppression of the start-up jump) Without external closing of the pressure compensator = Without external closing of the pressure compensator = S For panel mounting djustment elements Lockable rotary knob with scale ) = Rotary knob with scale = 7 Zero position of the marking at port = Series 0 to 9 = X (0 to 9 unchanged installation and connection dimensions) ) H-key with Material No. R90000 is included within the scope of supply ) Locating pin x DIN EN ISO 7, Material No. R (separate order) V = Further details in clear text No code = Without locating pin hole /0 ) = With locating pin hole FKM seals (other seals on request) ttention! The compatibility of the seals and pressure fluid has to be taken into account! R = With check valve M = Without check valve Flow ( ) 0,Q = Up to 0. L/min 0,Q = Up to 0. L/min,Q = Up to. L/min Q = Up to.0 L/min Q = Up to.0 L/min 0Q = Up to 0.0 L/min Q = Up to.0 L/min Q = Up to.0 L/min Q = Up to.0 L/min Ordering details: rectifier sandwich plate, not for panel mounting Rectifier sandwich plate ZS X V * Nominal size = V = Series 0 to 9 = X (0 to 9 unchanged installation and connection dimensions) Further details in clear text FKM seals (other seals on request) ttention! The compatibility of the seals and pressure fluid has to be taken into account! referred types Type FRM FRM -X/0,QMV FRM -X/0,QMV FRM -X/,QRV FRM -X/QMV FRM -X/QRV FRM -X/QMV FRM -X/QRV FRM -X/0QMV FRM -X/0QRV FRM -X/QRV FRM -X/QRV FRM -X/QRV Material number R R90007 R R9000 R90007 R9000 R90009 R90000 R R9000 R9000 R9000 Type ZS ZS -X/V Material number R9009 Further preferred types and standard components can be found in the ES (Standard rice List). RE 9 /.0 /0.0 /0 FRM

3 Symbols: -way flow control valves (simplified, detailed) Flow control valve: Simplified (without check valve; without external closing) Flow control valve: Simplified (with check valve; without external closing) Flow control valve: Simplified (without check valve; with external closing) Flow control valve: Simplified (with check valve; with external closing) Type FRM..-X/..MV Type FRM S..-X/..MV Type FRM..-X/..RV Type FRM S..-X/..RV Type FRM..-X/..MV Type FRM..-X/..RV Flow control valve: Detailed (without check valve; without external closing) Flow control valve: Detailed (without check valve; with external closing) Type FRM..-X/..MV Type FRM S..-X/..MV Type FRM..-X/..MV Flow control valve: Detailed (with check valve; without external closing) Flow control valve: Detailed (with check valve; with external closing) Type FRM..-X/..RV Type FRM S..-X/..RV Type FRM..-X/..RV Symbols: rectifier sandwich plate ( = component side, = subplate side) T FRM /0 RE 9 /0.0

4 Function, section: type FRM General: The flow control valve type FRM is a -way flow control valve. It is used for maintaining a constant flow, independent of pressure and temperature. The valve basically comprises of a housing (), rotary knob (), orifice bush (), pressure compensator () and an optional check valve. Flow control valve type FRM..-X/..MV (without external closing, without check valve) Flow from port to port is throttled at throttle position (). The throttle cross-section is varied by turning the rotary knob (). In order to keep the flow constant, independent of pressure, a pressure compensator () is fitted in port downstream of the throttle position (). The compression spring () presses the orifice bush () and the pressure compensator () outwards against their respective stops and thus keeps the pressure compensator () in the open position when there is no flow through the valve. When fluid flows through the valve, the pressure acting in port applies a force to the pressure compensator () via orifice (7). The pressue compensator () moves into the compensating position until the forces balance. If the pressure in port rises, then the pressure compensator () moves in the closing direction, until a balance of forces is once more attained. Due to this continuous compensating action of the the pressure compensator, a constant flow is obtained. In order to control a flow through the valve in both directions, a rectifier sandwich plate type ZS may be fitted below this flow control valve. Function, section: type FRM S 7 Type FRM 7-X/.MV Flow control valve type FRM S..-X/..RV (without external closing, with check valve, for panel mounting) Flow from port to port is throttled at throttle position (). The throttle cross-section is varied by turning the rotary knob (). In order to keep the flow constant, independent of pressure, a pressure compensator () is fitted in port downstream of the throttle position (). The compression spring () presses the orifice bush () and the pressure compensator () outwards against their respective stops and thus keeps the pressure compensator () in the open position when there is no flow through the valve. When fluid flows through the valve, the pressure acting in port applies a force to the pressure compensator () via orifice (7). The pressure compensator () moves into the compensating position until the forces balance. If the pressure in port rises, then the pressure compensator () moves in the closing direction, until a balance of forces is once more attained. Due to this continuous compensating action of the pressure compensator, a constant flow is obtained. Free-flow from port to port is via the check valve (). 7 Type FRM S7-X/..RV RE 9 /0.97 /0.0 /0 FRM

5 Function, section, circuit example: type FRM Flow control valve type FRM..-X/..RV (with external closing, with check valve) The function of this valve is basically the same as that of valve type FRM..-X/..MV. However, this type of flow control valve is provided with an external port permitting the pressure compensator () to be pressurised via port (9). The external pressure acting in port (9), via orifice (0), holds the pressure compensator () closed against the force of compression spring (). When the connected directional valve () is actuated to permit flow from to, control is achieved as with type FRM. Thus a jump on start-up is avoided. This version with external closing of the compensator may only be used for meter-in control. Free return flow from port to port is via check valve (). ctuator 9 T 0 Type FRM 7-X/..RV Technical data: -way flow control valve (for applications outside these parameters, please consult us!) General Installation Optional mbient temperature range C 0 to + 0 Weight FRM ; FRM kg pprox.. Hydraulic FRM S kg pprox.. Maximum operating pressure in port bar ressure differential p for free return flow See characteristic curves on page Minimum pressure differential bar to ressure stability up to p = bar % ± (q V max ) Flow q V max L/min q V min up to 00 bar cm /min q V min up to bar cm /min ressure fluid Mineral oil (HL, HL) to DIN ; Fast bio-degradable pressure fluids to VDM (also see RE 90 ); HETG (rape seed oil); HEG (polyglycols); HEES (synthetic ester); Other pressure fluids on request ressure fluid temperature range C 0 to + 0 Viscosity range mm /s 0 to 00 Cleanliness class to ISO code Maximum permissible degree of contamination of the pressure fluid is to ISO 0 (C) class 0// ) ) The cleanliness class stated for the components must be adhered too in hydraulic systems. Effective filtration prevents faults from occurring and at the same time increases the component service life. ttention! The pressure loss from at the inlet of the directional valve to at the inlet of the flow control valve is noticable at low flows. FRM /0 RE 9 /0.0

6 Technical data: rectifier sandwich plate (for applications outside these parameters, please consult us!) Nominal flow L/min Maximum operating pressure bar 0 Opening pressure bar 0.7 Weight kg pprox. 0.9 Characteristic curves (measured with HL, ϑ oil = 0 C ± C) Flow in L/min ressure differential in bar Flow in relationship to the scale setting (flow control from to ) Q, 0, Scale divisions p-q V -characteristic curve via check valve to ; orifice closed Flow in L/min 00 Temperature relationship at p = 0 bar Q,Q 0,Q 0,Q Flow in L/min Flow in L/min Q 0 Q 0 Q 0Q Scale divisions Flow-pressure relationship Q 0 0 Q Q 0Q 0 0, Q Q,Q 0,Q Flow differential in cm /min Temperature in C Temperature in C Temperature in C 0 70 ressure differential in bar 0, 0,Q Input pressure in bar Rectifier sandwich plate type ZS p-q V -characteristic curve Flow in L/min RE 9 /0.0 /.0 /0 FRM

7 7, Unit dimensions: subplate mounting type FRM and type FRM (dimensions in mm) Ø X T 7 Ø Ø Ø, 7 0 0, 7, 9 9, 0, 0 Ø, 0 9 View X Lockable rotary knob with scale (adjustment element ) Name plate Inlet Outlet Identical seal rings for ports,, and T Space required to remove the key 7 Ø hole for version FRM is not drilled. (without external closing) Rotary knob with scale (adjustment element 7 ) 9 osition of marking at port 0 orting pattern to DIN 0 Form, without locating pin hole orting pattern to ISO 0 and CETO-R H with locating pin hole Subplates to catalogue sheet RE 0 and valve fixing screws must be ordered separately. Subplates: Without locating pin hole Type G /0 (G /) Type G /0 (G /) Type G 0/0 (G /) With locating pin hole Type G /0 (G /) Type G /0 (G /) Type G 0/0 (G /) to catalogue sheet RE 0 and Valve fixing screws: Without rectifier sandwich plate M x 0 DIN 9 0.9; M =.9 Nm With rectifier sandwich plate M x 70 DIN 9 0.9; M =.9 Nm Required surface finish of the mating piece 0,0/00mm R max FRM 7/0 RD RE 9 /0.97 /.0 /0.0

8 Unit dimensions: threaded port type FRM S (dimensions in mm) Ø 0 Ø M 7 G / Ø 0 ±0, X,, ±0, View X Lockable rotary knob with scale (adjustment element ) Name plate Inlet Outlet Connection thread G / to ISO / Space required to remove the key Rotary knob with scale (adjustment element 7 ) 9 osition of marking is opposite the name plate RD RE 9 /0.0 /.0 /0.97 /0 FRM

9 max., 0 0 Unit dimensions: adaptor plate HSE 0 G000-X/V00 (dimensions in mm) Note: The adaptor plate (Material No. R9009) is designed for mounting a flow control valve type FRM..-X/.. onto an existing porting pattern of a flow control valve type FRM -X/ , 7, 0, 9, 0 Ø,7;,9, 0 Ø 0;,, Ø 9 9 x M; Ø, 7 Mounting surface for a flow control valve type FRM Mounting surface for the porting pattern of a flow control valve type FRM Seal ring S.H.C.S. M x 0 DIN 9-0.9, M =.9 Nm is included within the scope of supply Valve fixing screws must be ordered separately. Unit dimensions: rectifier sandwich plate type ZS -X/V (dimensions in mm) ttention! Rectifier sandwich plate type ZS -X/V may not be used in conjunction with a flow control valve type FRM..-X/.. with external closing of the pressure compensator. Ø,;, -way flow control valve Ø Rectifier sandwich plate 7 Subplates to catalogue sheet RE 0 and valve fixing screws, see page 7. Seal ring 7 0,0/00mm R max 0, 0 Required surface finish of the mating piece FRM 9/0 RE 9 /0.0

10 Notes osch Rexroth G Industrial Hydraulics D-97 Lohr am Main Zum Eisengießer D-97 Lohr am Main Telefon 0 9 / -0 Telefax 0 9 / - Telex 9-0 documentation@boschrexroth.de Internet osch Rexroth Limited Cromwell Road, St Neots, Cambs, E9 ES Tel: 0 0/ Fax: 0 0/ 90 info@boschrexroth.co.uk The data specified above only serves to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The details stated do not release you from the responsibility for carrying out your own assessment and verification. It must be remembered that our products are subject to a natural process of wear and ageing. RE /0.0 0/0 FRM