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Proportional directional control valves two-stage models without electrical feedback

Proportional directional control valves two-stage models without electrical feedback
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Proportional directional control valves two-stage models without electrical feedback - 1

Proportional directional control valves two-stage models without electrical feedback F:T*N Powering Business Worldwide

Proportional directional control valves two-stage models without electrical feedback - 2

Contents GENERAL DESCRIPTION MODEL CODES SPOOL DATA FUNCTIONAL SYMBOLS OPERATING DATA PERFORMANCE CHARACTERISTICS POWER CAPACITY ENVELOPES FLOW CHARACTERISTICS STEP RESPONSE INSTALLATION DIMENSIONS KBDG5V-5/7/10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Pilot Supply and Drain Plugs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Views on mounting faces. . . . . . . . . . . . . . . . . . . ....

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Proportional directional control valves two-stage models without electrical feedback - 3

Vickers™ KBDG5V-5/7/8/10 are solenoid operated directional control, non-feedback type proportional valves . These are two-stage proportional directional control valves in which the main-stage spool is positioned according to the output from an integrally mounted proportional, solenoidoperated, pressure-reducing valve . Direction of main-spool travel depends upon which of the two solenoids of the pilot valve is energized and the amount of travel is dependent upon the current input to the solenoid . At any intermediate position of the main spool, a force balance exists between the controlled,...

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Proportional directional control valves two-stage models without electrical feedback - 4

Model series Proportional valve with integral amplifier, B series Directional valve Subplate mounted Solenoid controlled/pilot operated Pressure rating on P, A & B ports Sizes 7, 8 and 10: 350 bar (5000 psi) Size 5: 315 bar (4500 psi) T Internal pilot drain Blank External pilot drain Manual override Blank Plain overrides H Water -resistant overrides Mounting interface size (ISO 4401) 5 NFPA D05, CETOP 5 Electrical command option M1 +/- 10V control signal Electrical connection Spool type See "Spool Data", page 5 2 All ports blocked when spool centered 12 All ports blocked when spool...

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Proportional directional control valves two-stage models without electrical feedback - 5

Spool data Spool types and flow ratings Main stage spool symbol Flow rating 90 L/min (24 USgpm) 80 L/min (21 USgpm) 180 L/min (48 USgpm) 85 L/min (22.6 USgpm) 170 L/min (45 USgpm) 330 L/min (88 USgpm) 330 L/min (88 USgpm) 550 L/min (145 USgpm) 550 L/min (145 USgpm) 550 L/min (145 USgpm) 550 L/min (145 USgpm) Spool code Main stage spool symbol Flow rating Spool code Symmetric spools Flow ratings for flow through P-A-B-T at p = 5 bar (72 psi) per flow path, e.g. P-A, or B-T. For other pressure drop values see “Flow Gain” curves on pages 10 and 11. Asymmetric spools Figure preceding metering...

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Proportional directional control valves two-stage models without electrical feedback - 6

Functional symbols Spool symbols Simplified symbols including transient flow conditions (dotted line). AB Spool type 133C with typical regenerative circuit Pilot stage with integral amplifier. Simplified symbol KBDG5V models (Spool type “2” shown) Pressure reducer module, see “Model Code” . Main-stage. Spool type “2C” shown. Typical schematic symbol * nternal plug shown, I for external pilot supply (via port X). For internal pilot supply (from port P) plug is not fitted. Port X should be blocked at mounting interface, or otherwise plugged at subplate or manifold block. See “Model Code” . ▲...

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Proportional directional control valves two-stage models without electrical feedback - 7

Data is typical with fluid at 36 cSt (168 SUS) and 50°C (122°F). EATON Proportional directional control valves V-VLPO-MC001-E1 S

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Proportional directional control valves two-stage models without electrical feedback - 8

Minimum pressure KBDG5V-5/7/8 For full flow performance, pilot pressure >45 bar (650 psi) . KBDG5V-10 For full flow performance, pilot pressure >28 bar (405 psi) . i . e . Pressure at port P for internal pilot supply. or Pressure at port X for external pilot supply. Maximum Pressures, bar (psi) for models without integral pilot pressure reducer Pilot drain application notes External pilot drain is the recommended configuration . Internal pilot drain is possible where a stable "T" port pressure, not exceeding 8 bar (116 psi), can be guaranteed A WARNING Any pressure surges at the "T" port...

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Proportional directional control valves two-stage models without electrical feedback - 9

Power capacity envelopes Flow through P-A-B-T or P-B-A-T Power capacity Looped flow Pressure drop EATON Proportional directional control valves V-VLPO-MC001-E1 September 2020

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Proportional directional control valves two-stage models without electrical feedback - 10

Flow characteristics Flow gain curves at stated values of total valve pressure drop, for flow P-A-B-T, or P-B-A-T. KBDG5V-5-2C90N Flow rate Flow rate Flow rate Flow rate EATON Proportional directional control valves V-VLPO-MC001-E1 September 2020

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Proportional directional control valves two-stage models without electrical feedback - 11

Flow characteristics Flow gain curves at 10 bar (145) psi valve pressure drop, for flow P-A-B-T, or P-B-A-T. USgpm L/min 600 150 500 Flow rate Flow rate Flow rate Asymmetric spools At 5 bar (72 psi) valve pressure drop 2C70N45 @ 5 bar delta P Flow (l/min) Flow (l/min) Flow (l/min) Flow (l/min) EATON Proportional directional control valves V-VLPO-MC001-E1 September 2020

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Proportional directional control valves two-stage models without electrical feedback - 12

Flow (l/min) Flow rate Flow (l/min) Flow (l/min) EATON Proportional directional control valves V-VLPO-MC001-E1 September 2020

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Proportional directional control valves two-stage models without electrical feedback - 13

Test conditions: No pressure reducer module Flow P-A-B-T Total valve Ap = 10 bar (145 psi) External pilot pressure = 50 bar (725 psi) "Response" = Time, from step response signal, until output reaches 90% of step change value Spool response times (ms) Input signal step change KBDG5V-5KBDG5V-7KBDG5V-8KBDG5V-10 Pilot flow required to achieve above response times: KBDG5V-5KBDG5V-7KBDG5V-8KBDG5V-10 3,8 L/min 6,2 L/min 6,2 L/min 23,0 L/min (0.98 USgpm) (1.6 USgpm) (1.6 USgpm) (5.96 USgpm) EATON Proportional directional control valves V-VLPO-MC001-E1 September 2020

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Proportional directional control valves two-stage models without electrical feedback - 14

KBDG5V Models with “EX" or “X" (With integral pilot pressure reducer) The illustration is correct for KBDG5V-8 valves Dimensions are shown in mm (inches) KBDG5V Models with “E" or no symbol (Without integral pilot pressure reducer) ▲ Overall installed length of KBD valves is X1 with connector fitted, and X2 without . EATON Proportional directional control valves V-VLPO-MC001-E1 September 2020

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Installation dimensions Pilot supply and drain plugs KBDG5V-5 models Viewed from port B end of main-stage M5 plug, part no. 471119. Remove for internal pilot supply M5 plug, part no. 471119. Remove for internal pilot drain KBDG5V-7 models only * Remove this plug for access to pilot drain plug KBDG5V-7 models only * M6 x 8 mm plug, part no. 471131: fitted for external pilot drain. Not fitted for internal pilot drain. KBDG5V-7 models only * M6 x 8 mm plug, part no. 471131: ﬁtted for external pilot supply models; not ﬁtted for internal pilot supply models. See “Model Code” . Size 7 only * M5...

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