MOOG D634-319C Servo Valve (USA)

Brand: MOOG (USA)

Application Areas: Medical & Health, Environmental Protection, Food/Agricultural Products, Chemical, Petroleum

Compared to other brands of servo valves, MOOG servo valves offer advantages such as energy saving, zero pollution, strong environmental adaptability, low operating noise, durability requiring minimal maintenance, and suitability for industries with high energy, performance, and environmental requirements.

MOOG servo valves are primarily used as actuators in electro-hydraulic servo systems (see Hydraulic Servo Systems). In servo systems, hydraulic actuators, compared to electric and pneumatic actuators, offer advantages such as faster response, higher power output per unit weight, smoother transmission, and stronger anti-interference capabilities. Conversely, electrical components are often used for signal transmission and characteristic correction in servo systems. Therefore, modern high-performance servo systems also employ electro-hydraulic methods, and servo valves are essential components in such systems.

MOOG servo valves primarily refer to electro-hydraulic servo valves, which, upon receiving an electrical analog signal, correspondingly modulate the output flow and pressure. It functions as both an electro-hydraulic conversion element and a power amplifier, converting weak electrical input signals into high-power hydraulic energy (flow and pressure) output.

MooG Servo Valve Working Principle

The MooG servo valve consists of a permanent magnet torque motor, nozzle, baffle, valve core, valve sleeve, and control chamber. When current is applied to the input coil, the baffle moves to the right, strengthening the throttling effect of the right nozzle, reducing flow, and increasing the back pressure on the right side; simultaneously, it reduces the throttling effect of the left nozzle, increasing flow and decreasing the back pressure on the left side. The forces at both ends of the valve core become unbalanced, causing the valve core to move to the left. High-pressure oil flows from S to C2, delivering it to the load. Load return oil flows through C1 and the return port into the oil tank. The displacement of the valve core is proportional to the input current of the torque motor. The hydraulic pressure acting on the valve core is balanced by the spring force; therefore, in equilibrium, the differential current of the torque motor is proportional to the displacement of the valve core. If the input current is reversed, the flow rate is also reversed. The table shows the classification of servo valves.

The MOOG servo valve is a key component in electro-hydraulic servo control systems developed by MOOG Corporation. It is a hydraulic control valve that receives analog electrical signals and outputs modulated flow and pressure accordingly. Electro-hydraulic servo valves offer advantages such as fast dynamic response, high control precision, and long service life, and are widely used in electro-hydraulic servo control systems in aerospace, shipbuilding, metallurgy, and chemical industries.

MOOG Servo Valve G761-3025

MOOG Servo Valve G761-3023B

MOOG Servo Valve G761-3009

MOOG Servo Valve G761-3605

MOOG Servo Valve G761-3600

MOOG Servo Valve G761-3016

MOOG Servo Valve G761-2760 S19KOFA5UAL

MOOG Servo Valve D761-2751A-5

MOOG Servo Valve G631-3704A

MOOG Servo Valve G631-3009 B

MOOG Servo Valve G631-3005B

MOOG Servo Valve G631-3006B

MOOG Servo Valve G631-3008B H10JDFM4VBR

MOOOG Servo Valve G631-3015B

MOOOG Servo Valve G631-3800B

MOOOG Servo Valve G631-3800B

MOOOG Servo Valve D631-346C

MOOOG Servo Valve D631-404C

MOOOG Servo Valve 631-550A

MOOOG Servo Valve G631-3702B (Old D631-195C)

MOOOG Servo Valve D061-9322/J09HOAB4HN1

MOOOG Servo Valve D061-8322/J09HOAB4HB1

MOOOG Servo Valve D061-8310

MOOOG Servo Valve D061-8312 MOOG servo valve D691-074D. Our company primarily deals in European and American brands, and can source brands from any European country. Our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, VICKERS, ROSS

British brands: Norgren

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi