| Mechanical Feedback Servovalves | 
        
        
            |   | 
            72  | 
              | 
            78  | 
              | 
            79-100 
               
             | 
              | 
            79-200  | 
              | 
            G631 | 
              | 
            G761 
               
             | 
        
        
            |   | 
            3 & 4-way, two stage, higher flow | 
              | 
            3 & 4-way, two stage, higher flow | 
              | 
            3 & 4-way, three stage, higher flow with offboard electrical feedback | 
              | 
            3 & 4-way, three stage, higher flow with offboard electrical feedback | 
             
               
             | 
            3 & 4-way, two stage, lower flow | 
              | 
            3 & 4-way, two stage, lower flow | 
        
        
            | Flow @ 35 bar [500 psi] per land -lpm [gpm] 95.0 [25.0] 152 [40.0] 228 [60.0] 75.0 [20.0] 115 [30.0] 152 [40.0] 115 [30.0] 228 [60.0] 228 [60.0] 378 [100] 492 [130] 756 [200] 5.0 [1.0] 10.0 [2.5] 20.0 [5.0] 40.0 [10.0] 60.0 [15.0] 75.0 [20.0] 5.0 [1.0] 10.0 [2.5] 19.0 [5.0] 38.0 [10.0] 63.0 [16.5]  | 
        
        
            | Operating Pressure - bar [psi] maximum | 
            350 [5,000] | 
            210 [3,000] | 
            210 [3,000] 350 [5,000] | 
            210 [3,000] 350 [5,000] | 
            210 [3,000] 315 [4,500] | 
            315 [4,500] | 
        
        
            | Envelope - cm [in] approximate  | 
            Length Width Height | 
            17.0 [6.1] 12.9 [5.1] 11.4 [4.5] | 
            14.6 [5.8] 8.1 [3.2] 10.3 [4.1] | 
            26.1 [10.3] 11.0[4.3] 17.9 [7.1] | 
            28.6 [11.2] 14.5 [5.7] 22.3 [8.8] | 
            13.8 [5.4] 8.0 [3.2] 11.9 [4.7] | 
            9.4 [3.7] 9.4 [3.7] 6.9 [2.7] | 
        
        
            | Signal - mA single coil  | 
            8, 15, 40 | 
            8, 15, 40, 200 | 
            User Defined | 
            User Defined | 
            30, 100 | 
            15, 40, 200 | 
        
        
            | Fluid Temperature Range -°C [°F]1) | 
            -40 to 135 [-40 to 275] | 
            -40 to 135 [-40 to 275] | 
            -20 to 80 [-4 to 176] | 
            -20 to 80 [-4 to 176] | 
            >-29 to 135 [-20 to 275] | 
            -29 to 135 [-20 to 275] | 
        
        
            | Interface  | 
              | 
            ISO 10372-06-05-0-92 | 
            Moog Unique | 
            ISO 10372-06-05-0-92 | 
            Moog Unique | 
            ISO 4401-05-05-0-94 | 
            ISO 10372-04-04-0-92 | 
        
        
            | Hysteresis @ 210 bar [3,000 psi] | 
            <4.0% | 
            <3.0% | 
            <1.0% | 
            <1.0%
               
             | 
            <3.0% | 
            <3.0% | 
        
        
            | Threshold @ 210 bar [3,000 psi] | 
            <1.5% | 
            <0.50% | 
            <0.50%
               
             | 
            <0.50% | 
            <1.0% | 
            <0.50% | 
        
        
            | Frequency Response @ 40% signal 210 bar [3,000 psi] Hz  | 
            >50 | 
            >35 | 
            >55 | 
            >55 | 
            >70 | 
            >100 | 
        
        
            | Step Response 0-90% @ 210 bar [3,000 psi]  | 
            ms  | 
            <25 | 
            <30 | 
            <6 | 
            <6 | 
            <11 | 
            <6 |