• 6 DN pilot valve with control valve spool and sleeve, unilaterally operated
• Main stage with position feedback, and with servo function
• With excellent static and dynamic performance
• With optional specialized functions Q3、Q4
• Suitable for the applications requiring high performance for open-loop and closed-loop control of speed, position and pressure
| General | |||||||
| Design | Spool type valve, pilot operated | ||||||
| Construction | Servo solenoid directional control valve NG6, with position controller for pilot valve and main stage | ||||||
| Installation orientation | Subplate, mounting hole configuration NG10...27 to ISO 4401-... | ||||||
| Installation position | Optional | ||||||
| Circumstances temperature range | ℃ | –20...+50 | |||||
| Weight | kg | NS 10 8.35 | NS 16 10 | NS 25 18 | NS 27 18 | ||
| Vibration resistance, test condition | Max.25g, shaken in 3 dimensions(24 h) | ||||||
| Hydraulic (measured with HLP 46, ϑoil = 40℃ ±5℃) | |||||||
| Hydraulic fluid | Hydraulic oil to DIN 51524...535, other fluids after prior consultation | ||||||
| Viscosity range | recommended | mm2/s | 20...100 | ||||
| max. permitted | mm2/s | 10...800 | |||||
| Maximum permissible degree of contamination of pressure fluid. Purity class to ISO 4406 (c) | Class 18/16/13 1) | ||||||
| Flow direction | See symbol | ||||||
| Nominal flow at ∆ p = 5 bar per notch) | L/min | NS 10 | NS 16 | NS 25 | NS 27 | ||
| See ordering code | |||||||
| Max. operating pressure | Ports P, A, B external control oil inlet | bar | 350 | 350 | 350 | 280 | |
| Ports P, A, B Internal control oil inlet | bar | 280 | |||||
| Port T X Y | bar | 250 | |||||
| Min. control oil pressure in "pilot stage" | bar | 10 | |||||
| Qmax | L/min | 170 | 450 | 900 | 1000 | ||
| QN pilot valveΔp = 35 bar | L/min | 2 | 4 | 12 | 12 | ||
| Leakage of pilot valve at 100 bar | L/min | < 150 | < 180 | < 350 | < 500 | ||
| Leakage of main stage | L/min | <0.25 | < 0.4 | < 0.6 | < 0.6 | ||
| Static/Dynamic | |||||||
| Hysteresis | % | < 0.1 scarcely measurable | |||||
| Manufacturing tolerance for Qmax | % | ≦ 10 | |||||
| Response time for signal change(at X = 100 bar) | 0...100 % | 25 | 40 | 45 | 45 | 130 | |
| 0...10 % | 25 | 40 | 45 | 45 | 130 | ||
| Response time for signal change(at X = 10 bar) | 0...100 % | 85 | 90 | 150 | 150 | 500 | |
| 0...10 % | 50 | 40 | 80 | 80 | 200 | ||
| Switch-off behavior | After electrical switch-off: pilot valve in fail-safe. Main stage moves to spring-centered "mid position" | ||||||
| Thermal drift | Zero point Displacement | ||||||
| Zero adjustment | Adjustable ±5 % via valve amplifier | ||||||
ADD: Address: No. 81, Zhuhang Road, Minhang District, Shanghai（Shanghai Lixin Hydraulics Co., Ltd.)
TEL: 021-31616718 Tel: 021-31616718, ext. 8000 ( reception )
© 2023 Shanghai Lixin Hydraulics Co., Ltd. copyright hu13042344
