Moog Servo Valve with G3/8 Outlet Port Lip Seal or Mechanical Seal and Horizontal Pump Shaft for Hydraulic Systems
Price:
2
MOQ:
1
Delivery Time:
2 weeks
Brand:
MOOG
Product Description
MOOG Industrial Hydraulic Servo Valve
Model Numbers: D634-319C, D634-341C, D631-333C, D661-556C, D661-571C, D661Z556C, G761-3004, D661-4789, D072-559A, G631-3005
Made in Germany, imported with original packaging
Product Specifications
| Specification | Value |
|---|---|
| Nominal Diameter | 25cm |
| Quantity Available | 88 units |
| Custom Processing Support | Yes |
| Material | Cast Iron |
| Place of Origin | Germany |
| Functional Purpose | Building Materials Industry |
| Color | Blue |
| Packaging | Boxed (30*40*70) |
| Operating Temperature | 36°C |
| Type | Valve |
| Structure | Steel |
| Contact | WhatsApp: +85267220981 |
Compatible Models
- Servo valve G761-3004 H38JOGM4VPL
- Amplifier D661-4033 P80HAAF6VSX2-A
- Servo valve D661-4636 G60KOA5VSX2HA
- Servo valve D661-4651 G35KOA6VSX2HA
- Servo valve D661-4469C G75KOAA6VSX2HA
- Servo valve D633-308A R08K01MON
- Servo valve D633-308B R08KO1M0NSM2
- Servo valve G631-3006B H75JOFM4VBR
- Servo valve G761-3600B
- Servo valve D662-4010/D061-8411 D02HABF6VSX2-A
- Servo valve G761-3033
- Servo valve G761-3034
Product Description
MOOG servo valves are primarily used as actuators in electrical hydraulic servo systems. These systems benefit from hydraulic actuators that offer excellent speed control, high power-to-weight ratio, smooth transmission, and strong interference resistance. The servo valves are essential components in modern high-performance electro-hydraulic servo systems.
Frequently Asked Questions
Common Failure Issues
- Torque Motor Issues:
- Broken coils result in no current flow, preventing valve response
- Contamination in air gap causes armature sticking
- Loose fasteners or worn parts can increase null bias or instability
- Nozzle/Flapper Stage Issues:
- Clogged nozzles or orifices (often from oil contamination) reduce frequency response and cause instability
- Spool Amplifier Stage Issues:
- Spool sticking from contaminated oil or deformed spool causes distorted response
- Cutting edge wear increases internal leakage and reduces stability
System-Level Symptoms
- Cylinder refusal to move (often due to stuck servo valve)
- Uncontrolled valve movement (sudden full opening/closing without command)
- Cylinder oscillation ("hunting") from high internal leakage or instability
- High cylinder lag
Maintenance Recommendations
- Maintain clean, dry hydraulic fluid
- Use high-quality filters and follow strict oil analysis/replacement schedule
- Design hydraulic system to minimize contaminant accumulation
- Perform regular inspections for leaks and performance changes
- Follow manufacturer's preventive maintenance intervals
Purchasing and Services
- Custom valve solutions available upon request
- Detailed test reports provided with new/repaired valves
- Technical support available through MOOG and authorized distributors
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
Location
Nan'an, Fujian Province, China
Contact Person
liyun