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MOOG VALVE SPECIFICATION & OPERATION DATA



MOOG VALVE USE THE COLD ROLLING MILLS

1. Model / Type                   G 761

2. Mounting Pattern:          ISO 10372 -04-04 -0 92

3. Valve Body version:       4- Way
                                           2-Stage with spool – bushing assembly.

4. Pilot Stage:                    Nozzle/ Flapper.

5. Pilot connection:            Optional , Internal or External.

6. Fluid supply:                 G761 series servo vales are intended to       
                                        operate with constant supply pressure.


7. Supply pressure:            Minimum – 200psi ( 14 bar )
                                      Maximum standard 4500psi ( 315 bar ).

8. Proof pressure:             at “P” port             6750psi ( 473 bar )
                                      at “T” port             4500psi ( 315 bar ).

9. Rated flow tolerance      @ 1000 psi   DPN                                %        ±  10
10. Symmetry:                                                                     %        < 10
11. Threshold:                                                              %        < 0.5
12. Hysteresis                                                               %        < 3.0

13. Null shift:   with Temp. 100 °F [55 °K] variation             %         <2.0
                       With acceleration to 10g                                              <2.0
   For every 1000 psi [70 bar] supply pressure change                    <2.0
   With return pressure 0 to 500 psi [0 to 35 bar]                            <2.0

14. Nominal Resistance                                                                  80                                         
     Per coil at 77°F (25° C)           
15. Recommended Rated current                                 mA               ± 40
     (Parallel, Differential , or Single coil Operation)             


GENERAL TECHNICAL DATA


  1. Operating Pressure:            
       Ports P X A and B             up to 4,500 psi
       Port T                             up to 3,000 psi
2. Temperature Range:
           Fluid                               - 20°F to 275°F
           Ambient                          - 20°F to 275°F
    3. Seal Matarial:                      Fluorocarbon
    4. Operating Fluid:                   Compatible with common hydraulic fluids, other 
                                                   fluids on request.
           Recommended viscocity     60 – 450 sus @ 100°F
    5. System Filteration:       High pressure filter (with out bypass, but with dirt
        alarm) mounted in the main flow and, if possible, directly upstream of the
valve. Refer to Moog filtration catalog for recommended filtration scheme.


    6. Class of Cleanliness: The cleanliness of the hydraulic fluid greatly effects the
performance (spool positioning, high resolution)and wear (metering edges, pressure gain, leakage) of the servo valve.



    7. Recommended Cleanliness Class:
             For normal operation              ISO 4460 < 14/11
             For longer life                                ISO 4460 < 13/10
    8. Filter Rating recommended
             For normal operation              ß10 ≥ 75 ( 10 μm absolute)
             For longer life                                ß10 ≥ 75 ( 5 μm absolute)

    9. Installation Operations:                 Any position, fixed or movable.
            Vibration                                30 g, 3 axes
            Weight                                   2.4 lb (4.0 lb for steel body)


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