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{"title":"Moog Servo Valve with 6-250m3 Drive Mode 3 Speed Settings and 25cm Nominal","imgUrl":"https:\/\/img.chinax.com\/nimg\/7a\/42\/3878b91428995093e193b3fb1725-200x200-1\/moog_servo_valve_with_6_250m3_drive_mode_3_speed_settings_and_25cm_nominal.jpg","attrs":{"Brand Name":"MOOG","Model Number":"D633-495B D662-4356K D765-1089-5 D791-5045 D661-4033 CZ1006C3A D136-001-008 D137-001-011 D128-011-BA006 D791-5009","Certifiion":"ISO","Place of Origin":"Germany"}}
{"title":"Moog Servo Valve with 3 Speed Settings 280 bar Pressure Rating and 24V 220V","imgUrl":"https:\/\/img.chinax.com\/nimg\/d2\/7d\/f3eda2d0981fc25c95d297b6b3e7-200x200-1\/moog_servo_valve_with_3_speed_settings_280_bar_pressure_rating_and_24v_220v_voltage_for_electro_hydraulic_control.jpg","attrs":{"Brand Name":"MOOG","Model Number":"743f002B G122-824-002 G122-829-001 G423-604-L25 G413-604A C08428-001 D661-5009 631F751F D122-034-017 743f003a","Certifiion":"ISO","Place of Origin":"German"}}
{"title":"Moog Servo Valve with Internal Meshing Principle and Online Video After Service","imgUrl":"https:\/\/img.chinax.com\/nimg\/d5\/f8\/94c6695c5edd5cda2a22cb5b5aec-200x200-1\/moog_servo_valve_with_internal_meshing_principle_and_online_video_after_service_for_1800_rpm_maximum_speed.jpg","attrs":{"Brand Name":"MOOG","Model Number":"D635-371E D691-087D D691-072D G761-3008 G761-3009-4 G761-3009 AC4598-24 D662-4087 D061-8311 d661-4444c","Certifiion":"ISO","Place of Origin":"Germany"}}
{"title":"Moog Servo Valve Electro-Hydraulic Servo Valve with 5.5 kg - 27 kg Weight 0.1 kW","imgUrl":"https:\/\/img.chinax.com\/nimg\/3c\/bf\/7924177fdbd7b891444770b8cd69-200x200-1\/moog_servo_valve_electro_hydraulic_servo_valve_with_5_5_kg_27_kg_weight_0_1_kw_power_and_water_usage.jpg","attrs":{"Brand Name":"MOOG","Model Number":"D635-671E D634-524A D691Z2086G D662-4002 D661-4010 D661-5626C D661-5628C D792-5012 D663-4008 B97069-061","Certifiion":"ISO","Place of Origin":"Germany"}}
{"title":"Moog Servo Valve Electro-Hydraulic Servo Valve with 290*180mm Size Up to 1000 cc","imgUrl":"https:\/\/img.chinax.com\/nimg\/9b\/db\/453db3b5c493145dd9358c4b6e29-200x200-1\/moog_servo_valve_electro_hydraulic_servo_valve_with_290_2a180mm_size_up_to_1000_cc_2frev_displacement_and_pressure_compensated_con.jpg","attrs":{"Brand Name":"MOOG","Model Number":"D061-8312 N122-001 D634-1035 D641-230 122-105 D631-294","Certifiion":"ISO","Place of Origin":"Germany"}}
{"title":"Moog Servo Valve Electro-Hydraulic Proportional Flow Control Valve with 25cm","imgUrl":"https:\/\/img.chinax.com\/nimg\/7e\/00\/b01c474ca71e6d6844c32e6b0d34-200x200-1\/moog_servo_valve_electro_hydraulic_proportional_flow_control_valve_with_25cm_nominal_diameter_low_noise_less_than_70_db_28a_29_and.jpg","attrs":{"Brand Name":"MOOG","Model Number":"J761-003\/S63JOGA4VPL D662-4015-D02HABF6VSX2B D691-2705D-Q60FTATCNEC2N D633-419AR16KO1AONSP2 D791-4007S25JQS6VSX2-B","Certifiion":"ISO","Place of Origin":"Germany"}}
{"title":"Moog Servo Valve with Radial Shaft Seal Mechanically Driven Pump and Cast Iron","imgUrl":"https:\/\/img.chinax.com\/nimg\/c1\/e4\/cbd8a4ce9cbfe75f4d004bb13dc3-200x200-1\/moog_servo_valve_with_radial_shaft_seal_mechanically_driven_pump_and_cast_iron_material_for_electro_hydraulic_proportional_control.jpg","attrs":{"Brand Name":"MOOG","Model Number":"D765-1089-4\/S63JOGAEVSXO D061-8412\/D663-4007J15HOBB4VB D661-G23\/JOAA6VSX2HA 072-559A\/S15FDFAVBL D663-4006\/L03HXBD6NSM2-0","Certifiion":"ISO","Place of Origin":"Germany"}}
Hydraulic system, machine tool lubriion system, engineering machinery control
Technical Specifiions
Parameter
Value
Parameter
Value
Nominal diameter
25cm
Quantity
88 units
Custom processing support
Yes
Imported
Yes
Packing specifiion
31
Material
Cast iron
Place of origin
Germany
Functional purpose
Building materials industry
egory
1
Color
Blue
Packaging
Boxed
Operating temperature
36°C
Dimensions
30×40×70
Type
Valve
Structure
Steel
Contact
WhatsApp: +85267220981
Product Image
Compatible Models
D661-4352C/G75HOAA4NSM2-O
D661-4353C
D661-4354C
D661-4355C
D661-4356C
D661-4357C
D661-4358C
D661-4360E
D661-4361E
D661-4362E
D661-4363C
D661-4364C
D661-4365C
D661-4366C
D661-4367C
D661-4368C
D661-4369E
D661-4370E
D661-4371E
D661-4372E
D661-4373C
D661-4374C
D661-4375B
D661-4376E
D661-4377E
D661-4378E
D661-4380 EG60HOCA5VSX2HA
D661-4380E
D661-4380E/G60HOCA5VSX2HA
D661-4382C
D661-4383E
D661-4384C
D661-4385C
D661-4385C/G60KOAA4VSX2HA
D661-4386C
D661-4387C
D661-4388E
D661-4389 EG35HOCA5VSX2HA
D661-4389E
D661-4390E
D661-4391E
D661-4392E
D661-4394C
D661-4395E
D661-4396E
D661-4397E
D661-4398E
D661-4399E
D661-4401C
D661-4402C
D661-4405C
D661-4406C
D661-4407C
D661-4408E G75KOCA4NSM2HA
D661-4409E
D661-4410C
D661-4411E
D661-4412C
D661-4413C
D661-4414C
D661-4415C
D661-4416C
D661-4417C
D661-4419C
D661-4420C
D661-4421C
D661-4422C
D661-4423C
D661-4425E
D661-4426E
D661-4427C
D661-4428C
D661-4429E
D661-4430C
D661-4431D
D661-4432C
D661-4433C
D661-4434C
D661-4436C
D661-4437D
D661-4438E
D661-4439C
D661-4439C G15HOAA7VSX2HA
D661-4440E
D661-4441E
D661-4442E
D661-4443C
D661-4443C 1156-421 G45J0AA6VSX2HA
D661-4443C G45J0AA6VSX2HA
D661-4444C
D661-4444C 1156-421 G60JOAA6VSX2HA
D661-4444C G60JOAA6VSX2HA
D661-4444C/G60JOAA6VSX2HA
D661-4445D
D661-4446C
D661-4446E
D661-4447C
D661-4448E
D661-4449C
D661-4450C
D661-4451C
D661-4452C
D661-4453C
D661-4453C/G75HOAO4NSD2HA
D661-4454E
D661-4455E
D661-4456C
D661-4457C
D661-4462C
D661-4463E
D661-4464E
D661-4465E
D661-4467E
D661-4468
D661-4469C
D661-4469C 1156-421 G75KOAA6VSX2HA
D661-4469C G75KOAA6VSX2HA
D661-4469C/G75J0AA6VSX2HA
D661-4470E
D661-4472C
D661-4473E
D661-4474C
D661-4475C
D661-4476E
D661-4477C
D661-4478C
D661-4479C
D661-4480E
D661-4481C
D661-4482C
D661-4483E
D661-4484C
D661-4506C 1156-421 G23J0AA6VSX2HA
D661-4506C G23J0AA6VSX2HA
D661-4506C/G23JOAA6VSX2HA
D661-4507C
D661-4507C/G08JOAA6VSX2HA
D661-4536
D661-4538C/G35JOAA4VSX2HA
D661-4539C 1156-421 G35JOAA5VSX2HA
D661-4539C G35JOAA5VSX2HA
D661-4576C
D661-4577C G45HOAA4VSX2HA
D661-4586E
D661-4590C G60HOAA4NSM2HO
D661-4594C G75KXAA5VSX2HA
D661-4598C/G45H0AA6VSX2HA
D661-4636
D661-4636 1156-421 G60KOAA5VSX2HA
D661-4636 G60KOAA5VSX2HA
D661-4636/G60KOAA5VSX2HA
D661-4640
D661-4642/G45HOAO6VSP2HA
D661-4647B/G75HOAA4NSD2HA
D661-4649
D661-4650
D661-4651
D661-4651 1156-421 G35JOAA6VSX2HA
D661-4651 G35JOAA6VSX2HA
D661-4651/G35J0AA6VSX2HA
D661-4652 1156-421 G15JOAA6VSX2HA
D661-4652 G15JOAA6VSX2HA
D661-4652/G15JOAA6VSX2HA
D661-4654
D661-4664B/G60HOAA4NSD2HA
D661-4691C
D661-4697C
D661-4697C 1156-421 G15JOAA5VSX2HA
D661-4697C G15JOAA5VSX2HA
D661-4697C/G15J0AA5VSX2HA
Frequently Asked Questions
What is a Moog electro-hydraulic servo valve?
A Moog electro-hydraulic servo valve is a high-precision component that converts electrical signals into hydraulic power output. It controls hydraulic flow and pressure to regulate position, speed, force, or pressure in systems like industrial machinery, aerospace actuators, and turbine controls. Its design typically includes a torque motor, nozzle-flapper pilot stage, and spool valve for accurate performance.
What are the key features?
High precision: Control accuracy up to ~0.1%
Fast dynamic response: Responds within milliseconds
Programmability: Customizable control algorithms via embedded electronics
Robustness: Operates in harsh environments (-20°C to 80°C) and resists contamination
Fail-safe function: Automatic shutdown during power loss or failure
What are common failure modes?
Torque motor issues:
Coil breakage (valve fails to respond)
Armature sticking or ball head wear (causing instability)
Nozzle/flapper blockages: Clogging from oil contamination reduces response and causes system oscillation
Spool amplifier problems:
Edge wear (increases leakage and noise)
Spool sticking due to contaminated or degraded oil
Seal aging: Leads to internal/external leakage
How to maintain servo valves?
Oil quality management: Use recommended fluids (e.g., phosphate ester fire-resistant oil) and maintain cleanliness per NAS 1638 Class 5 standards. Regularly check acidity and resistivity
Routine inspections: Test for electrical issues (e.g., coil resistance), clean filters, and check for loose components
Pre-startup checks: Ensure oil circulation before powering the valve to prevent clogging
How to troubleshoot unstable operation (e.g., cylinder drift or oscillation)?
Check servo valve resolution and zero zone stability
Inspect for internal leakage or spool wear
Verify control system parameters and calibrate zero bias if needed
What if the valve doesn't move?
Confirm electrical signals and coil connectivity
Check for spool sticking caused by debris in oil
Ensure correct startup sequence: oil flow before electrical power
Can Moog servo valves be customized?
Yes. Models like the D636/D637 series support fieldbus interfaces and programmable electronics for appliion-specific tuning.
What specifiions should I consider?
Operating pressure: Up to 350 bar
Flow rate: 5-100 L/min (at Δp 35 bar)
Voltage/current: Typically 220V, 1.5A
Mounting: Complies with ISO 4401 standards
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Total Annual:
1 million-10 millon
Employee Number:
>50
Ecer Certification：
Verified Supplier
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...
