WHAT MOVES YOUR WORLD
SERVO VALVES
PILOT OPERATED
FLOW CONTROL VALVE
WITH ANALOG INTERFACE
761 SERIES
ISO 10372 SIZE 04
HIGH PERFORMANCE, TWO-STAGE DESIGN PROVIDING
FLOW CONTROL IN A SIMPLE, RUGGED, DEPENDABLE,
LONGLIFE DESIGN
Rev. M, April 2024
2Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
Whenever the highest levels of motion control
performance and design flexibility are required, you’ll find
Moog expertise at work. Through collaboration, creativity
and world-class technological solutions, we help you
overcome your toughest engineering obstacles, enhance
your machine’s performance, and help take your thinking
further than you ever thought possible.
This catalog is for users with technical knowledge. To ensure all necessary characteristics for function and safety of the system, the user has to check the suitability of the products
described herein. The products described in this document are subject to change without notice. In case of doubt, please contact Moog.
Moog is a registered trademark of Moog Inc. and its subsidiaries. All trademarks as indicated herein are the property of Moog Inc. and its subsidiaries. For the full disclaimer refer to
www.moog.com/literature/disclaimers.
For the most current information, visit www.moog.com/industrial or contact your local Moog office.
INTRODUCTION
INTRODUCTION ..........................................................................2
Product Overview ..............................................................3
Features and Benefits......................................................4
Description of Operation ...............................................5
TECHNICAL DATA .....................................................................6
761 Series Servo Valves ................................................ 6
Installation Drawing .......................................................... 11
Mounting Requirements .................................................. 12
Electrical Connection .......................................................13
BACKGROUND ............................................................................14
Flow Calculation .................................................................14
ORDERING INFORMATION ....................................................15
Maintenance Kits ...............................................................15
Filtration..................................................................................16
About Moog....... ........ ......................................................... 17
Ordering Code .....................................................................19
3Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
The 761 Series Flow Control Servo Valves are throttle
valves for 3-way and preferably 4-way applications. They
are a high performance, 2-stage design that covers the
range of rated flows from 0.5 to 75 l/min (0.125 to 19.5
gpm) at 35 bar (500 psi) valve pressure drop per spool
land.
The design is simple and rugged for dependable, long life
operation. The pilot stage is comprised of a symmetrical,
nozzle-flapper torque motor. The output stage includes
a 4-land sliding spool, precision ground to a bushing for
optimal performance. A carbide tipped feedback wire
provides mechanical feedback of the spool position
to the torque motor. The carbide ball on the end of the
feedback wire ensures high accuracy, reliable operation
and long service life. All of our Servo Valves are known for
high accuracy and reliable operation even in the harshest
industrial applications.
These valves are suitable for electrohydraulic position,
speed, pressure or force control systems with high
dynamic response requirements.
The 761 Series is one of the most versatile servo valves
suitable for a broad range of applications. It is the latest
version of the famous 760 series that incorporates about
70 years of Moog design expertise.
INTRODUCTION
PRODUCT OVERVIEW
Valve design 2-stage, with spool and bushing and dry torque motor
Mounting pattern ISO 10372-04-04-0-92
Maximum operating pressure - ports P, A, B and X • Aluminium body: 315 bar (4,500 psi)
• Steel body: 350 bar (5,000 psi)
Maximum operating pressure - port T 210 bar (3,000 psi)
Pilot valve Nozzle flapper
Rated flow at Δp
N
35 bar/spool land (500 psi/spool land) 0.5 to 75 l/min (0.125 to 19.5 gpm)
Step response time for 0 to 100 % stroke Standard: < 8 ms
High: < 6 ms
Very high: < 4 ms
Intrinsically safe and explosion proof valve versions are available for use in potentially hazardous environments. Specific
models are certified to FM, ATEX, CSA, TIIS and IECEx standards. Contact Moog for details.
TIIS
Documents
Part name Description Remark Moog part number
Catalog 761 series general information To download document click
here or scan below:
CDL6642
Manual 761 CDS6673
761K intrinsically safe Series CDS6769
Installation drawing 761 Series global design CB59420
761K Series, 2-coils CA33637
761K Series, 3-coils CA28051
4Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
INTRODUCTION
FEATURES AND BENEFITS
Features Benefits
100 % factory tested to ensure critical specification
performance
Ensures smooth and easy startup, reduces downtime and
insures long life in critical industrial applications
2-stage design Enables high machine performance, faster cycle times and
greater accuracy – all resulting in higher productivity
Dual coil torque motor Redundancy for high reliability
Dual precision nozzles in torque motor Precision flow control and predictability
Dry torque motor design Eliminates potential contamination issues in the air gaps
of the torque motor that could cause machine downtime
Hardened 440C bushing and spool Provides for high life, wear resistance when used in the
harsh environments; provides for low sliding friction
during use
Carbide, ball-in-hole feedback mechanism Extends lifetime of servo valve when compared to slotted
spool and sapphire ball designs
Emergency fail-safe positioning Most valves are set up to return to a fail-safe position
when the command signal is interrupted or eliminated
Field replaceable pilot stage filter Enables preventive maintenance in the field, saving
precious machine downtime and service costs
External null bias adjustment Enables technicians to manually adjust the null bias of
the valve to adapt to the conditions of the machine (see
section “Null Flow Adjustment”). This feature provides a
simple adjustment to machine performance without the
need to adjust a controller.
Standard field configurable 5th port for separate pilot
supply
Provides for the precise control of low pressure
applications and allows adaptability in service.
Many customizable options available High adaptability to many applications.
Compliant to SAE-ARP-490 Valve Design Standard Electrohydraulic Servo Valves according to this ARP
standard are applicable to fluid power systems in all types
of flight vehicles, and it is applicable to Military, Civil and
Space design/certification standards
Port pattern per ISO Standard Readily available mounting manifolds
5Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
The 761 Series Flow Control Servo Valve consists of
a polarized electrical torque motor and two stages of
hydraulic power amplification. The motor armature
extends into the air gaps of the magnetic flux circuit and
is supported in this position by a flexure tube member. The
flexure tube acts as a seal between the electromagnetic
and hydraulic sections of the valve. The 2 motor coils
surround the armature, one on each side of the flexure
tube.
The flapper of the first stage hydraulic amplifier is rigidly
attached to the midpoint of the armature. The flapper
extends through the flexure tube and passes between 2
nozzles, creating two variable orifices between the nozzle
tips and the flapper. The pressure controlled by the flapper
and nozzle variable orifice is fed to the end areas of the
second stage spool.
The second stage is a conventional four-way spool design
in which output flow from the valve, at a fixed valve
pressure drop, is proportional to spool displacement from
the null position. A cantilever feedback spring is fixed to
the flapper and engages a hole in the center of the spool.
Displacement of the spool deflects the feedback spring
which creates a force on the armature/flapper assembly.
Input signal induces a magnetic charge in the armature
and causes a deflection of the armature and flapper. This
assembly pivots about the flexure tube and increases the
size of one nozzle orifice and decreases the size of the
other.
The differential pressure created by this action causes
spool motion. The resulting spool displacement induces
a linear force in the feedback wire which opposes the
original input signal torque. Spool movement continues
until the feedback wire force equals the input signal force.
INTRODUCTION
DESCRIPTION OF OPERATION
Electro-hydraulic Servo Valve Cut-away
XTAPB
Pilot Stage Filter
Spool
Flapper
Inlet
Orifice
Flexure Tube
Coil
Connector
Nozzles
Bushing
Feedback Wire
Lower Polepiece
Upper Polepiece
Magnet (not show
n)
Armature
6Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
General Technical Data
TECHNICAL DATA
761 SERIES SERVO VALVES
Valve design 2-stage mechanical feedback, with bushing and spool
Pilot valve Nozzle flapper
Mounting pattern ISO 10372-04-04-0-92
Installation position Any position, fixed or movable
Weight with steel body 1.7 kg (3.8 lb)
Weight with aluminium body 1.0 kg (2.2 lb)
Storage temperature range -40 to +60 °C (-40 to +140 °F)
Ambient temperature range -29 to +135 °C (-20 to +275 °F)
1)
Vibration resistance 30 g, 3 axis, 10 Hz to 2 kHz
Shock resistance 30 g, 3 axis
Maximum operating pressure
port P, X, A, B
• Aluminium body: 315 bar (4,500 psi)
• Steel body: 350 bar (5,000 psi)
Maximum operating pressure port T
Static: same as P port. Normal operating: 70 bar (1,000 psi).
Minimum operating pressure 14 bar (200 psi)
Rated flow at Δp
N
35 bar
(500 psi)/spool land
0.5 to 2 l/min
(0.13 to 0.53 gpm)
4 l/min
(1.1 gpm)
10 l/min
(2.5 gpm)
19 l/min
(5 gpm)
38 l/min
(10 gpm)
57/63 l/min
(15.1/16.6 gpm)
75 l/min
(19.8 gpm)
Maximum flow Q
max
104 l/min (27.5 gpm)
Typical leakage
1.0 l/min (0.26 gpm) 1.5 l/min
(0.4 gpm)
2.1 l/min (0.55 gpm)
Maximum total leakage
(axis cut)
1.2 l/min (0.31 gpm)
2 l/min
(0.53 gpm)
2.8 l/min
(0.74 gpm)
3 l/min (0.79 gpm) 3.3 l/min
(0.87 gpm)
Pilot flow
0.45 l/min (0.12 gpm) to 0.80 l/min (0.21 gpm)
Null adjust authority
2)
75 % 60 % 25 % 15 % 10 %
Hydraulic fluid Mineral oil based fluids according to DIN 51524 parts 1 to 3 and ISO 11158. Other
fluids upon request.
Seal material FKM (fluorocarbon) 90 Shore, EPR (ethylene-propylene copolymer) 90 Shore,
others upon request
Hydraulic fluid temperature range
-29 to +135 °C (-20 to +275 °F)
Recommended viscosity range
at 38 °C (100 °F)
15 to 100 mm
2
/s (cSt)
Recommended cleanliness class as
per ISO 4406 for functional safety
17/14/11
Recommended cleanliness class as
per ISO 4406 for longer service life
15/13/10
Recommended filter rating for
functional safety
ß10 ≤ 75 (10 μm absolute)
Recommended filter rating for
longer service life
ß5 ≤ 75 (5 μm absolute)
Hydraulic Data
1)
1) Measured at 210 bar (3,000 psi) pilot or operational pressure, oil viscosity 32 mm2/s and oil temperature +40 °C (+104 °F)
2) For standard configuration. Optional magnetic null offers approximately 10 % adjustment.
1) Option available for higher temperature ranges up to 400 °F.
7Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
TECHNICAL DATA
Typical Static and Dynamic Data
1)
761 SERIES SERVO VALVES
1) Measured at 210 bar (3,000 psi) pilot or operational pressure, oil viscosity 32 mm
2
/s and oil temperature +40 °C (+104 °F)
Step response time for 0 to 100 % stroke Standard: < 16 ms
High: < 7 ms
Very high: < 4 ms
Threshold, typical ≤ 0.5 %
Hysteresis, typical ≤ 3.0 %
Null shift per ΔT = 55 °C (131 °F) ≤ 2.0 %
Standard flow tolerance ±10 %
Pressure null shift with 1,000 psi change < 2 %
8Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
TECHNICAL DATA
STANDARD RESPONSE
A larger spool diameter provides greater driving force
and higher maximum flow rate. The low flow pilot stage (F)
ensures a uniform pressure output. A high flow pilot stage
(G) is available for improved dynamics.
Type -3 dB 90 deg
phase lag
Step
response
S04/S10/S19..F 80 Hz 145 Hz 6 ms
S38..F 60 Hz 115 Hz 10 ms
S57/S63..F 45 Hz 100 Hz 16 ms
S57/S63..G 80 Hz 125 Hz 7 ms
S75 upon request
Typical Characteristic Curves
Measured with 40 % signal amplitude, at 3,000 psi (210 bar) pilot or operating pressure, fluid viscosity of 24 cSt, and
fluid temperature of 104 °F (40 °C)
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase La
g
(De
g
rees)
0
+4
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase Lag (Degrees)
0
+4
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase Lag (Degrees)
0
+4
5
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase Lag (Degrees)
0
+4
S04/S10/S19..F S38..F
S57/S63..F
S57/S63..G
9Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
Preferred design for most position, pressure, or force
control applications. Ensures a fast response time to meet
system demands with a high level of accuracy. High flow
pilot (G) is standard.
TECHNICAL DATA
HIGH RESPONSE
Typical Characteristic Curves
Type -3 dB 90 deg
phase lag
Step
response
H00/01/02/04/10/19..F 120 Hz 200 Hz 4 ms
H00/01/02/04/10/19..G 140 Hz 230 Hz 3 ms
H38..F 90 Hz 130 Hz 7 ms
H38..G 120 Hz 170 Hz 5 ms
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase La
g
(De
g
rees)
0
+4
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase Lag (Degrees)
0
+4
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase Lag (Degrees)
0
+4
5
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase Lag (Degrees)
0
+4
H00/H01/H02/H04/H10/H19..F H00/H01/H02/H04/H10/H19..G
H38..F H38..G
Measured with 40 % signal amplitude, at 3,000 psi (210 bar) pilot or operating pressure, fluid viscosity of 24 cSt, and
fluid temperature of 104 °F (40 °C)
10Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
TECHNICAL DATA
VERY HIGH RESPONSE
Type -3 dB 90 deg
phase lag
Step
response
V02/V04/V10/V19..G 400 Hz 330 Hz 2 ms
V02/V04/V10/V19..X 450 Hz 350 Hz 2 ms
V21/V29..G 350 Hz 280 Hz 4 ms
Typical Characteristic Curves
Recommended for the most demanding applications. A
smaller spool and high flow pilot (G) enables the valve to
match demand at very high frequency.
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase Lag (Degrees)
0
+4
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase La
g
(De
g
rees)
0
+4
5
-2
+2
-4
-10
-8
0
-6
Magnitude (Decibels)
10 100
Frequency (Hz)
500
80
40
105
100
20
60
Phase Lag (Degrees)
0
+4
V02/V04/V10/V19..G V02/V04/V10/V19..X
1)
V21/V29..G
Measured with 40 % signal amplitude, at 3,000 psi (210 bar) pilot or operating pressure, fluid viscosity of 24 cSt, and
fluid temperature of 104 °F (40 °C)
1) Contact Applications Engineering to confirm special
pilot type (X). Type X can represent many non-standard
configurations. This very high flow pilot can be used to
improve response even further, but can limit maximum flow
rate capability.
11Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
1. Location pin (refer to section ‘Hole Pattern’ for
position)
2. Filter location (filter replacement see service manual)
3. Mechanical null adjust screw (requires 3/8” wrench and
3/32” hex key)
4. Optional magnetic null adjust (requires 7/8” wrench)
(see manuals CDS6769)
5. Connector mates with MS3106F14S-2S
X Port Configuration
For operation with internal or external pilot connection
Pilot flow supply Set screw (M3 internal hexagon
socket, torque to 25 in-lb)
X P
Internal P Closed Open
External X Open Closed
TECHNICAL DATA
INSTALLATION DRAWING
5
1
4
2
Pin D
Pin A
Pin B
Pin C
3
53.7 [2.12]
44.45 [1.75]
22.22
[0.875]
81 [31.9]
93 [3.68]
65.07 [2.562]
Ø 2.57 [0.101]
94 [3.71]
33 [1.3]
74 [2.9]
37 [1.46]
22.22
[0.875]
23.79
[0.937]
Control
Port A
9.91 [0.39]
11.10 [0.437]
Port X
65.07 [2.562]
22.22
[0.875]
Pressure
Port P
Locating
Pin
12.7
[0.5]
Control
Port B
2.34
[0.092]
Tank
Port T
Ø 8.36
[0.329]
Ø 13.49
[0.531]
12Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
TECHNICAL DATA
Surface
Surface to which valve is mounted requires:
• Flatness of 0.025 mm (0.001 in) over 100 mm (3.94 in)
• Average finish R
a
better than 0.8 μm (0.000032 in)
Ports
For maximum flow ports must be designed as follows:
• P, T, A, B with diameters of 8.2 mm (0.323 in)
• X with diameter of 5.0 mm (0.20 in)
Recommended Mounting Seals
• Materialdependentonapplication
• 1.78mm(0.070in)crosssectionx10.82mm(0.426
in)insidediameter,90durometer.Equivalent
AS83248/2size-013forP,A,B,andTports
• 1.78mm(0.070in)crosssectionx9.25mm(0.364
in)insidediameter,90durometer.Equivalent
AS83248/2size-012forXport
Recommended Mounting Screws
• Material dependent on application
• SHCS 5/16 x 1.75 long. Grade 8 minimum
• SHCS M8 x 45 long. Grade 10.9 minimum
MOUNTING REQUIREMENTS REF. ISO 10372-04-04-0-92
(PORT CIRCLE DIAMETER 0.875)
13Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
Rated Current and Coil Resistance
A variety of coils are available for 761 Series Servo
Valves, which offer a wide choice of rated currents.
TECHNICAL DATA
ELECTRICAL CONNECTION
Standard
ordering
code
1)
Command signal (mA) Coil resistance
[Ohms/coil at
25 °C (77 °F)]
2)
Power consumption [W] Coil inductance [H]
measured at 50 Hz
3)
Single
coil
Series
coil
Parallel
coil
Single
coil
Series
coil
Parallel
coil
Single
coil
Series
coil
Parallel
coil
4 ±8 ±4 ±8 1,000 0.064 0.032 3.2 9.7 2.6
H ±15 ±7.5 ±15 206 0.046 0.023 0.72 2.2 0.59
L ±40 ±20 ±40 80 0.128 0.064 0.22 0.66 0.18
M ±50 ±25 ±50 80 0.20 0.10 0.22 0.66 0.18
Z ±200 ±100 ±200 22 0.88 0.44 0.07 0.21 0.06
1) Others optional
2) The resistance and inductance of standard coils are given below. The 2 coils in each Servo Valve are wound with equal turns giving
a normal production tolerance on coil resistance of ±10 %. Copper magnet wire is used, so the coil resistance will vary significantly
with temperature. The effects of coil resistance changes can be essentially eliminated through use of a current feedback servo
amplifier having high output impedance.
3) Inductance is determined under pressurized operating conditions and is greatly influenced by back electromagnetic forces of
the torque motor. These effects vary with most operating conditions, and vary greatly with signal frequencies above 100 Hz. The
apparent coil inductance values given are determined at 50 Hz.
A 4-pin electrical connector that mates with an
MS3106F14S-2S is standard. All 4 torque motor leads are
available at the connector so that external connections
can be made for series, parallel or single operation.
761 Series Servo Valves can be supplied on special order
with other connectors or pigtail.
Coil Connections
Standard Configuration for Valve Opening P ≥ B, A ≥ T
Single Series Parallel
A B C D
A B C D
A B C D
A (+), B (-) or C (+), D (-) A (+), D (-), B and C connected A and C (+), B and D (-)
14Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
The actual flow is dependent upon electrical command
signal and valve pressure drop. The flow for a given valve
pressure drop can be calculated using the square root
function for sharp edge orifices.
Q [l/min (gpm)] Actual flow
Q
N
[l/min (gpm)] Rated flow
Δp [bar (psi)] Actual pressure drop per spool land
Δp
N
[bar (psi)] Rated pressure drop
Flow Diagram for 4-way Operation
BACKGROUND
FLOW CALCULATION
Null-cut Options
Standard Axis Cut Underlap Spool Overlap Spool
Input Current
Control Flow
Q
I
Control Flow
Input Current
Q
I
Underlap
Zone
Input Current
Control Flow
Q
I
Overlap
Zone
Minimal change in gain through null
region. Best overall performance for
most closed loop systems.
Null region flow gain is higher than
normal. Always allows some small
amount of flow past the spool.
Null region flow gain is lower than
normal. Spool types can range from
minimal overlap to completely
blocked flow.
151 (40)
114 (30)
76 (20)
38 (10)
19 (5)
8 (2)
4 (1)
2 (0.5)
14
(200)
28
(400)
42
(600)
70
(1,000)
140
(2,000)
210
(3,000)
310
(4,500)
19 (5)
38 (10)
63 (16.5)
10 (2.5)
4 (1)
G761-3003B
G761-3004B
G761-3002B
G761-3001B
G761-3005B
104 (27.5)
p [bar (psi)]
Q [l/min (gpm)]
15Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
ACCESSORIES AND SPARE PARTS
Spare Parts
Part name Description Material Moog part number
Maintenance
kit
Base o-rings FKM per AMS7259
Note that o-ring
material is dependent
on application
B52555RK201K001
Additional o-rings required for filter access
Filter disk 63 μm
Maintenance
kit
Base o-rings FKM per AMS7259
Note that o-ring
material is dependent
on application
B52555RK204K001
Additional o-rings required for filter access
Filter disk 28 μm
ORDERING INFORMATION
16Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
ORDERING INFORMATION
FILTRATION
Filtration - Oil Filtration Requirements for
Industrial Servo Systems
The most effective way to reduce life cycle costs of
an oil hydraulic system is through close attention to
contamination control.
For industrial servo systems with 761 Series Servo Valves
the ideal system filter arrangement is summarized as
follows:
• Use a 10 micron (beta 10 ≥ 75) high pressure filter
without by-pass just before the valve or critical parts
of the valve (e.g. pilot).
• Use a 5 micron (beta 5 ≥ 75) low pressure filter in the
return or bypass line.
• Use a filter in the tank breather that is at least the
same filtration level as the finest filter in the system.
This recommendation is based on the fact that most servo
and proportional valves can accept the odd particle up to
25 microns so the pressure filter will protect the valve
from catastrophic failure. The real work is done by the
low pressure filter reducing small particle contamination
which is the prime contributor to component wear and
silting.
Assuming that the filters are properly dimensioned and
care is taken during initial installation and maintenance,
the aim should be to limit oil contamination to ISO 4406
17/14/11.
For long life, the maximum levels are 15/13/10,
respectively. It is important to note that these are
maximum contamination levels and with proper care
and regular filter change, significantly lower levels can
and should be achieved. Attention must also be paid to a
number of other factors that contribute to oil condition
problems such as elevated temperatures, high tank
humidity, “dirty” new oil.
17Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
ABOUT MOOG
Moog Inc. is a worldwide designer, manufacturer
and integrator of precision control components and
systems. Moog’s Industrial Systems Group designs and
manufactures high performance motion control solutions
combining electric, hydraulic, and hybrid technologies
with expert consultative support in a range of applications
including energy production and generation machinery,
industrial production machinery and simulation and test
equipment. We help performance-driven companies
design and develop their next-generation machines. Moog
Industrial Systems Group, with fiscal year 2020 sales of
USD 909 million and over 40 locations worldwide, is part
of Moog Inc. (NYSE: MOG.A and MOG.B) which has sales of
USD 2.885 billion.
This vast scope ensures that our engineers remain close
to the needs of machine builders and provide flexible
design solutions and technical expertise tailored to our
customers’ toughest challenges.
Moog experts work in close collaboration with machine
builders and application engineers to design motion
control systems for greater productivity, higher reliability,
superior connectivity, less costly maintenance and more
effective operations. Our regional presence, industry
knowledge and design flexibility ensure Moog motion
control solutions are tailored to their environment -
from meeting operating regulations and performance
standards, to taking machine performance to a higher
level.
Products
At the heart of every Moog solution is an array of products
engineered for precision, high performance and reliability.
For more than six decades, Moog products have been
specified for critical machine applications.
Some are developed specifically for unique operating
environments. Others are standard equipment on
machines across many industries. All are continuously
improved to take advantage of the latest technology
breakthroughs and advancements.
Moog products include:
• Servo Valves and Proportional Valves
• Servo Motors and Servo Drives
• Motion Controllers and Software
• Radial Piston Pumps
• Actuators
• Integrated Hydraulic Manifold Systems and Cartridge
Valves
• Slip Rings
• Motion Bases
ORDERING INFORMATION
18Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
ABOUT MOOG
Hydraulic Solutions
Since Bill Moog invented the first commercially viable
servo valve in 1951, Moog has set the standard for
world-class hydraulic technology. Today, Moog products
are used in a variety of applications - providing high power,
enhanced productivity and ever better performance for
some of the world’s most demanding applications.
Electric Solutions
Clean operation, low noise generation, less maintenance
and reduced power consumption make Moog electric
solutions ideal for applications worldwide. Moog is
the ideal partner for applications where transitioning
technologies require special expertise.
Hybrid Solutions
By incorporating the advantages of existing hydraulic
and electric technologies - including modular flexibility,
increased efficiency and cleanliness - into innovative
hybrid solutions, Moog offers new performance potential
in specialized applications.
Flight Simulation
Formula One Simulation Table
Moog Global Support is our promise to offer world-class
Repair and Maintenance Services delivered expertly by our
trained technicians. With the reliability only available from
a leading manufacturer with facilities around the world,
Moog offers you service and expertise you can count on to
keep your equipment operating as it should.
This promise offers many benefits to our customers
including:
• Reduce your downtime by keeping critical machines
running in peak performance
• Protect your investment by ensuring reliability,
versatility and long-life of products
• Better plan your maintenance activities and make
systematic upgrades
• Leverage our flexible programs to meet the unique
service requirements of your facility
Look to Moog for global support including:
• Repair services using OEM parts are performed by
trained technicians to the latest specifications
• Stock management of spare parts and products to
prevent unplanned downtime
• Flexible programs, tailored to your needs such as
upgrades, preventative maintenance and annual/
multiyear contracts
• On-site services bring the expertise to you, providing
quicker commissioning, set-up and diagnostics
• Access to reliable services that are guaranteed to
offer consistent quality anywhere in the world For
more information on Moog Global Support visit www.
moog.com/industrial/service.
MOOG GLOBAL SUPPORT
ORDERING INFORMATION
19Rev. M, April 2024
Moog 761 Series Flow Control Servo Valves
ORDERING CODE
9
P
S
04
10
10
O
H
L
Z
8
V
FKM (fluorocarbon)
G761/-761
7
5
6
M
5
12345678910 11
4
19
19
J
F
4
3
1
315
4
10
L
E EPR (ethylene-propylene copolymer)
4 pin MS threaded connector over P-side
Valve connector
B
4 pin MS threaded connector over B-side
A
T
4 pin MS threaded connector over T-side
4 pin MS threaded connector over A-side
Model ascension number (factory assigned)
Valve version
Standard response
2 Rated flow
Maximum operating pressure [bar (psi)] and body material
Bushing/spool design
1)
Others upon request
Note: Other options available upon request (X and Y are wildcards)
1)
Dual gain and asymmetrical flow are available in special configuration (see section “Null Cut Options”)
4-way: axis cut, zero lap
(4,500) aluminum
± 7.5 mA
± 20 mA
± 100 mA
± 15 mA
± 40 mA
± 200 mA
± 4 mA
± 25 mA
± 8 mA
± 50 mA
Command signal for 100 % spool stroke
Series coil value
Single or parallel
coil value
Seal material
Internal supply (port P)
External supply (port X)
Pilot connections (field configurable)
Standard dynamics
Pilot stage design (assigned by Moog)
Spool position without electrical signal
Center position
For
∆
p
N
= 35 bar (500 psi) per spool land
l/min (gpm) Response
Model number (assigned at the factory) Type designation
(2.5)
(1.0)
(5.0)
Optional features
4
M
H
High response
- Series specification
G
High dynamics
38
38 (10.0)
63
63
(16.5)
Preferred Models
Model number Type designation Rated flow Rated current
l/min gpm mA
G761-3001B H04JOGM4VPL 4 1.0 ± 40
G761-3002B H10JOGM4VPL 10 2.5 ± 40
G761-3003B H19JOGM4VPL 19 5.0 ± 40
G761-3004B H38JOGM4VPL 38 10.0 ± 40
G761-3005B S63JOGM4VPL 63 16.5 ± 40
K Intrinsically safe
V Super High response
00 0.5 (0.13)
01 1 (0.25)
02 2 (0.5)
K 350 (5,000) steel
B 3-way only, port A active. Port B vented to return
D 4-way: 10 % overlap
C 4-way: minimal overlap only, reduced tolerance
A 4-way: 3 % overlap
11
V Vented cap
Special features-
contact factory
N Magnetic null
A Port A open to return
B Port B open to return
-
75
75
(19.5)
29
29 (7.5)
H/V
H/V
H/V
H/V
S/H/V
S/H/V
S/H/V
S/H
S
S
S
57
57 (15.0)
R Reverse polarity
U 6 pin MS threaded connector over P-side
2 4 lead pigtail connector over A-side
3 4 lead pigtail connector over P-side
Model revision (factory assigned)
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MORE PRODUCTS. MORE SUPPORT.
Moog designs a range of motion control products to complement those featured in this document. Moog also provides
service and support for all of our products. For more information, contact the Moog facility closest to you.
Australia
+61 3 9561 6044
Service + 61 3 8545 2140
info.australia@moog.com
service.australia@moog.com
Brazil
+55 11 3572 0400
info.brazil@moog.com
service.brazil@moog.com
Canada
+1 716 652 2000
info.canada@moog.com
China
+86 512 5350 3600
info.china@moog.com
service.china@moog.com
France
+33 1 4560 7000
Service +33 1 4560 7015
info.france@moog.com
service.france@moog.com
Germany
+49 7031 622 0
Service +49 7031 622 197
info.germany@moog.com
service.germany@moog.com
Hong Kong
+852 2 635 3200
info.hongkong@moog.com
India
+91 80 4057 6666
Service +91 80 4057 6604
info.india@moog.com
service.india@moog.com
Ireland
+353 21 451 9000
info.ireland@moog.com
Italy
+39 0332 421 111
Service 800 815 692
info.italy@moog.com
service.italy@moog.com
Japan
+81 46 355 3767
info.japan@moog.com
service.japan@moog.com
Korea
+82 31 764 6711
info.korea@moog.com
service.korea@moog.com
Luxembourg
+352 40 46 401
info.luxembourg@moog.com
The Netherlands
+31 252 462 000
info.thenetherlands@moog.com
service.netherlands@moog.com
Singapore
+65 677 36238
Service +65 651 37889
info.singapore@moog.com
service.singapore@moog.com
Spain
+34 902 133 240
info.spain@moog.com
Sweden
+46 31 680 060
info.sweden@moog.com
Turkey
+90 216 663 6020
info.turkey@moog.com
United Kingdom
+44 (0) 1684 858000
Service +44 (0) 1684 278369
info.uk@moog.com
service.uk@moog.com
USA
+1 716 652 2000
info.usa@moog.com
service.usa@moog.com
For product information, visit www.moog.com/industrial
Moog is a registered trademark of Moog Inc. and its subsidiaries.
All trademarks as indicated herein are the property of Moog Inc. and its subsidiaries.
©2024 Moog Inc. All rights reserved. All changes are reserved.
Moog Servo-proportional Valves D936 and D937 Series
KEM/Rev. D, March 2024, Id. CDL58904-en
For product information, visit www.moog.com/industrial
For service information, visit www.moogglobalsupport.com
Moog is a registered trademark of Moog Inc. and its subsidiaries.
All trademarks as indicated herein are the property of Moog Inc. and its subsidiaries.
©2024 Moog Inc. All rights reserved. All changes are reserved.
761 Series Flow Control Servo Valves
STS, Rev. M, April 2024, CDL6642