Moog G771K616A Servovalve

TECHNICAL DATA
Moog G77X/77X Series Flow Control Servo Valves
G77X/77X SERIES SERVO VALVES
General Technical Data Valve design
2-stage, with spool and bushing
Pilot valve
Nozzle Flapper
Mounting surface

G771/771 – ISO 10372-02-02-0-92 G772/772 – ISO 10372-03-03-0-92 G773/773 – Moog specific
Installation position
Any orientation, fixed or movable
Weight
0.86 kg (1.9 lb)
Storage temperature range
-40 to +60 °C (-40 to +140 °F)
Ambient temperature range
-40 to +135 °C (-40 to +275 °F)
Vibration resistance (general)
30 g, 3 axis, 10 Hz to 2 kHz
Shock resistance (general)
30 g, 3 axis
Seal material

Fluorocarbon (FKM) 85 SHORE Others upon request
Hydraulic Data Maximum operating pressure Ports P, A and B
210 bar (3,000 psi)
Port T
210 bar (3,000 psi)
Rated flow at ∆pN 35 bar/spool land (500 psi/spool land)
4/10/19/38/57 l/min (1/2.5/5/10/15 gpm)
Maximum flow


G771/771 G772/772 G773/773
17 l/min (4.4 gpm) 57 l/min (15 gpm) 63 l/min (16.5 gpm)
Maximum main stage leakage flow rate (≈ zero lap)
1.9 l/min (0.49 gpm)
Null adjust authority
Greater than 10% of rated flow
Hydraulic fluid
Hydraulic oil as per DIN 51524 parts 1 to 3 and ISO 11158 Other fluids on request
Temperature range
-40 to +135 °C (-40 to +275 °F)
Recommended viscosity range
10 to 97 mm2/s (cSt) @ 38 °C
Maximum permissible viscosity range
5 to 1,250 mm2/s (cSt) @ 38 °C
Recommended filter rating For functional safety
ß10 75 (10 µm absolute)
For longer life ß5
75 (5 µm absolute)
Static and Dynamic Data Rated flow
4 l/min (1 gpm) 10 l/min (2.5 gpm) 19 l/min (5 gpm) 38 l/min (10 gpm) 57 l/min (15 gpm)
Deviation of rated flow
± 10% of rated flow
Step response time 0-100% stroke 4 ms
4 ms
Threshold
≤ 0.5% of rated signal
Hysteresis
≤ 3.0% of rated signal
Null shift for ∆T - 38°C (100°F)
≤ 2.0% of rated signal
Rev. K, June, 2018
4 ms
10 ms
17 ms
6