2-way flow control valve Model 2FRM 6

Transcription

1 R 28 6/0.98 Replaces R 28 62/05.94 R 28 6/ way flow control valve Model 2FRM 6 Nominal size 6 Series X Maximum operating pressure 4569 SI (5 bar) ) Maximum flow 8.45 GM (2 L/min) H//D 585/97 + H//D 5852/97 ) When used in conjunction with a rectifier plate up to 046 SI (20 bar) Models 2FRM 6.6-X/..V and 2FRM 6 S6-X/..V Contents Description age Features Ordering code 2 Symbols Functional description, section 4, 5 Technical data 5, 6 Characteristic curves 6 Unit dimensions 7 to 9 Features ressure compensated flow control valve Mounts on standard ISO 626-0, NF T.5. M R 2 FO interface, for subplates, see R External closure of compensator possible vailable with reverse free-flow check valve Handknob with high resolution scale for accurate flow settings and frequent adjustment reference Optional lockable handknob adjustment, with keys ressure compensator designed to reduce actuator lunge at start Sharp-edged orifice for temperature/viscosity immunity /0

2 R 28 6/06.98 Ordering code, 2-way flow control valve 2FRM 6 6 X V * 2-way flow control valve Size 6, NF 2 FO = 6 With external closing of the pressure compensator (lunge control) Without external closing of the pressure compensator = = Without external closing of the pressure compensator, = S for panel mounting djustment element Lockable handknob with scale ) = Handknob with scale = 7 Zero position of the scale at port = 6 Series 0 to 9 = X (0 to 9, externally interchangeable) ) H-key with part no is included within the scope of supply V = Further details in clear text FM seals (other seals on request) ttention! The compatibility of the seals and fluid must be taken into account! R = with check valve M = without check valve Flow ( ) 0.2Q = up to 0.05 GM (0.2 L/min) 0.6Q = up to 0.59 GM (0.6 L/min).5Q = up to 0.96 GM (.5 L/min) Q = up to 0.79 GM (.0 L/min) 6Q = up to.585 GM (6.0 L/min) 0Q = up to GM (0.0 L/min) 6Q = up to GM (6.0 L/min) 25Q = up to GM (25.0 L/min) 2Q = up to GM (2.0 L/min) Ordering code, rectifier sandwich plate Not for panel mounting Rectifier sandwich plate Z4S 6 X V * Size 6, NF 2 FO = 6 V = Series 0 to 9 = X (0 to 9, externally interchangeable) art no Further details in clear text FM seals (other seals on request) ttention! The compatibility of the seals and fluid must be taken into account! Rexroth Hydraulics 2/0 2FRM 6

3 Symbols, 2-way flow control valves (simplified, detailed) R 28 6/06.98 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) Model 2FRM 6..-X/..MV Model 2FRM 6 S..-X/..MV Model 2FRM 6..-X/..RV Model 2FRM 6 S..-X/..RV Model 2FRM 6..-X/..MV Model 2FRM 6..-X/..RV Flow control valve: detailed (without check valve; without external closing) Flow control valve: detailed (without check valve; with external closing) Model 2FRM 6..-X/..MV Model 2FRM 6 S..-X/..MV Model 2FRM 6..-X/..MV Flow control valve: detailed (with check valve; without external closing) Flow control valve: detailed (with check valve; with external closing) Model 2FRM 6..-X/..RV Model 2FRM 6 S..-X/..RV Model 2FRM 6..-X/..RV Symbols, rectifier sandwich plate ( = component side, 2 = sub-plate side) 2 T 2FRM 6 /0 Rexroth Hydraulics

4 R 28 6/06.98 Functional description, section, Model 2FRM 6 General: Flow control valve model 2 FRM is a pressure compensated, 2-way flow control valve. It is used to maintain constant actuator speed, independent of pressure and temperature. The valve is basically comprised of housing (), handknob (2), orifice (), pressure compensator (4) and an optional check valve. Flow control valve model 2FRM 6..-X/..MV (without external closing, without check valve) Flow from port to is throttled through orifice window (5). The throttle cross-section is varied by turning handknob (2). To maintain flow, independent of pressure, a pressure compensator (4) is included in port downstream of throttle (5). Compression spring (6) forces orifice () and pressure compensator (4) against their respective stops and holds pressure compensator (4) open when there is no flow through the valve. When fluid flows through the valve, pressure acting at port applies a force to pressure compensator (4) via orifice (7). The pressure compensator (4) moves into the compensating position until the forces balance. If the pressure in port rises, pressure compensator (4) 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 maintained. To control flow through the valve in both directions, a rectifier sandwich plate model Z4S 6 may be installed below this flow control valve Model 2FRM 6 76-X/.MV Functional description, section, Model 2FRM 6 S Flow control valve model 2FRM 6 S..-X/..RV (without external closing, with check valve, for panel mounting) Flow from port to is throttled through orifice window (5). The throttle cross-section is varied by turning handknob (2). To maintain flow, independent of pressure, a pressure compensator (4) is included in port downstream of throttle (5). Compression spring (6) forces orifice () and pressure compensator (4) against their respective stops and holds pressure compensator (4) open when there is no flow through the valve. When fluid flows through the valve, pressure acting at port applies a force to pressure compensator (4) via orifice (7). The pressure compensator (4) moves into the compensating position until the forces balance. If the pressure in port rises, pressure compensator (4) moves in theclosing direction, until a balance of forces is once more attained. Due to this continuous compensating action of the pressure compensator, a constant flow is maintained. Free-flow from port to is possible via check valve (8) Model 2FRM 6 S76-X/..RV Rexroth Hydraulics 4/0 2FRM 6

5 Functional description, section, circuit example, Model 2FRM 6 R 28 6/06.98 Flow control valve model 2FRM 6..-X/..RV (with external closing, with check valve) The function of this valve is basically the same as that of valve model 2FRM 6..-X/..MV. However, this model of flow control valve is provided with an external port permitting the pressure compensator (4) to be controlled via port (9). The external pressure acting in port (9) via orifice (0) holds pressure compensator (4) closed against the force of compression spring (6). When the directional valve () is actuated to permit flow from to, control is achieved as with model 2 FRM 6. ctuator lunge may be reduced. This version with external closing of the compensator may only be used for meter-in control. Free return flow from port to is possible via check valve (8) ctuator T 0 Model 2FRM 6 76-X/..RV Technical data, 2-way flow control valve (for applications outside these parameters, please consult us!) Weight 2FRM 6 ; 2FRM 6 lbs (kg) approx (.) 2FRM 6 S lbs (kg) approx..06 (.5) mbient temperature range F ( C) 86 to + 22 ( 0 to + 50) Maximum operating pressure at port SI (bar) 4500 (5) ressure fluid mineral oil (HL, HL) to DIN 5 524; fast bio-degradable pressure fluids to VDM (also see R 90 22); HETG (rape seed oil); HEG (polyglycole); HEES (synthetic ester); other fluids on request ressure fluid temperature range F ( C) 68 to + 76 ( 20 to + 80) Viscosity range SUS (mm 2 /s) 45 to 720 (0 to 800) Flow q V max GM (L/min) (0.2) (0.6) (.5) (.0) (6.0) (0.0) (6.0) (25.0) (2.0) q V min to 00 bar in /min (cm /min) (5) (5) (5) (5) (25) (50) (70) (00) (250) q V min to 5 bar in /min (cm /min) (25) (25) (25) (25) (25) (50) (70) (00) (250) Degree of contamination maximum permissible degree of contamination of the pressure fluid is to NS 68 class 9. We, therefore, recommend a filter with a minimum retention rate of ß ressure differential p for free return flow see characteristic curves on page 6 Minimum pressure differential SI (bar) 87 to 20 (6 to 4) ressure stability up to p = 5 bar % ± 2 (q V max ) ttention! ressure loss from at the inlet of the directional valve to at the inlet of the flow control valve is noticeable at low flows. 2FRM 6 5/0 Rexroth Hydraulics

6 R 28 6/06.98 Technical data, rectifier sandwich plate (for applications outside these parameters, please consult us!) Nominal flow GM (L/min) 8.45 (2) Maximum operating pressure SI (bar) 000 (20) Cracking pressure SI (bar) 0.5 (0.7) Weight lbs (kg) approx. 2 (0.9) Characteristic curves measured at ν = 90 SUS (4 mm 2 /s) and t = 22 F (50 C) Flow in relationship to the scale setting (flow control from to ) Flow in GM (L/min) p-q V -characteristic curve to ; closed orifice 247 (7) 22 (6) ressure differential in SI (bar).59 (6).2 (5).06 (4) 0.79 () 0.5 (2) 0.96 (.5) () 0.2 (0.5) 0 20 (4) 74 (2) 45 (0) 6 (8) 87 (6) 58 (4) 29 (2) 9.5 (500) 85.4 (400) 79. (00) 6.6 (600) 0.5 (500) 24.4 (400) 50 (0) 2.2 (200) 6. (00) Scale settings (0) 50 (0) 0 50 (0) 68 (20) 86 (0) 04 (40) 22 (50) Temperature in F ( C) 40 (60) 68 (20) 86 (0) 04 (40) 22 (50) 40 (60) Temperature in F ( C) 68 (20) (20) (0) Flow in GM (L/min) Temperature relationship at p = 290. (20 bar) Flow differential in cm /min 86 (0) 04 (40) 22 (50) Temperature in F ( C) 0.6 (40) 40 (60) 6Q Q.5Q 0.6Q 0.2Q.2 (50) 58 (70) 58 (70) 58 (70) Flow in GM (L/min) 8.45 (2) 2Q 7.9 (0) 7.4 (28) 6.87 (26) 25Q 6.4 (24) 5.8 (22) 5.28 (20) 4.76 (8) 6Q 4.2 (6).7 (4).7 (2) 0Q 2.64 (0) 2. (8).59 (6).06 (4) 0.5 (2) Scale settings Flow-pressure relationship Flow in GM (L/min) 7.9 (0) 6.6 (25) 5.28 (20).96 (5) 2.64 (0).2 (5).06 (4) 0.79 () 0.5 (2) () 0.2 (0.5) 0.05 (0.2) 87 (6) 72.5 (5) 58 (4) 4.5 () 29 (2) 4.5 () 2Q 25Q 6Q 0Q 6Q Q.5Q 0.6Q 0.2Q (40) (80) (20) (60) (200) (240) (280) (20) Input pressure in SI (bar) Recifier sandwich plate model Z4S 6 p-q V -characteristic curve ressure differential in SI (bar) ().2 (5) 2.64 (0).96 (5) 5.28 (20) 6.6 (25) Flow in GM (L/min) (0) (2) Rexroth Hydraulics 6/0 2FRM 6

7 2.64 (67) 2 Unit dimensions, Models 2FRM 6 and 2FRM 6 : dimensions in inches (millimeters) R 28 6/ Ø 0.8 () Ø 0.5 (8) Ø (2.6) (9) 2.6 (60).6 (40.5) (7.5) 0.26 (6) 0.86 (9.8) (0.) T.22 ().28 (2.5).77 (45) 0 Ø 0.27 (5.5) 2 4 View X 9 Ø.5 (8) (8) () 4.92 (25).58 (40) 8 Lockable handknob with scale (adjustment element ) 2 Name plate Inlet 4 Outlet 5 R-rings 0.86 x x.85 (47) 0.07 (9.8 x.5 x.78 for ports,, and T 6 Space required to remove key 7 Hole Ø 0.8 () for version 2FRM 6 is not drilled. (without external closing) 8 Handknob with scale (adjustment element 7 ) 9 osition of marking at port Required surface finish of mating piece /4.0 in 0.0/00 mm 2 (R max 4) (22) X Subplates to catalog sheet R and valve mounting bolts must be ordered separately. Subplates: G 4/0 (G /4) G 4/2 (SE 6; 9/6-8) G 42 /0 (G /8) G 42/2 (SE 8; /4-6) G 502/0 (G /2) G 502/2 (SE 8; /4-6) Valve mounting bolts: without rectifier sandwich plate M5 x.8 (0) DIN ; M = 6.56 lb-ft (8.9 Nm) with rectifier sandwich plate M5 x 2.76 (70) DIN ; M = 6.56 lb-ft (8.9 Nm) 2FRM 6 7/0 Rexroth Hydraulics

8 2 R 28 6/06.98 Unit dimensions, Model 2FRM 6 S : dimensions in inches (millimeters) 0.6 (5.5) 0.6 (5.5) (60).89±0,009 (48±0,) 0.97 (5) 0.97 (5) 0.89±0,009 (48±0,) 2.6 (60) 2 Ø.496 (8) View X M5 Ø.58 (40) () 4.92 (25) (8) () 2.84 (72) 0.5 (8) 0.4 () 2.44 (62) G /8 Ø. (28) X 5 Lockable Handknob with scale (adjustment element ) 2 Name plate Inlet 4 Outlet 5 Connection thread G /8 to ISO 228/ 6 Space required to remove key 8 Handknob with scale (adjustment element 7 ) 9 osition of marking is opposite the name plate Rexroth Hydraulics 8/0 2FRM 6

9 .22 ().28 (2.5).58 (40).58 (40) max..8 (5) 4.92 (25) R 28 6/06.98 Unit dimensions, adaptor plate G5075 : dimensions in inches (millimeters) Note: daptor plate G 5075 (art no ) permits mounting flow control valve model 2FRM 6..-X/.. onto an existing porting pattern for flow control valve model 2 FRM 5 -X/... Ø 0.9 (0); (2) Ø 0.66 (6.7); (,9).8 (0) 0.5 (8) (60).89 (48) 0.26 (6).6 (40.5). (27.8) 0.4 (0.) 0.86 (9.8) 0.52 () (9).62 (4) Ø 0.54 (9).22 () 0.57 (4.5) 4 x M5; 0.5 (8).28 (2.5) 0.54 (.8).89 (48) 2.6 (60) 0.26 (6).85 (47) 2 Ø (5.) 0 Mounting surface for flow control valve model 2FRM 6 Mounting surface for porting pattern for flow control valve model 2FRM 5 2 R-ring x x 0.0 (2.8 x 2.4 x 2.62) S.H.C.S. M5 x.8 (0) DIN , M = 4.5 lb-ft (6. Nm) daptor plates and valve mounting bolts must be ordered separately. Unit dimensions, rectifier sandwich plate model Z4S 6-X/V: dimensions in inches (millimeters) attention! Rectifier sandwich plate model Z4S 6 -X/V may not be used in conjunction with flow control valve model 2FRM 6..-X/.. with built-in external closing of the pressure compensator way flow control valve.59 (40.5) 5 Rectifier sandwich plate 2.6 (60) 6 Subplates, see catalog sheet R and valve mounting bolts see page R-ring 0.68 x x 0.07 (9.8 x.5 x.78) /4.0 in Ø 0.49 (2.5); 0.05 (.) /00 mm (R max 4) 7 Ø 0.5 (8) Required surface finish of mating piece 2FRM 6 9/0 Rexroth Hydraulics

10 R 28 6/06.98 Notes Mannesmann Rexroth Corporation Rexroth Hydraulics Div., Industrial, 25 City Line Road, ethlehem, Tel. (60) Fax: (60) Rexroth Hydraulics Div., Mobile, 700 Old Mansfield Road, Wooster, OH Tel. (0) Fax: (0) 26-2FRM 6 0/0 ll rights reserved Subject to revision rinted in U.S..