MOOG servo valve G761-3023B in stock

Brand: MOOG (USA)

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

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 the flow rate, and increasing the back pressure on the right side; simultaneously, it reduces the throttling effect of the left nozzle, increasing the flow rate, 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 through the return port and enters 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.

MOOG servo valves are key components in electro-hydraulic servo control systems developed by MOOG Corporation. They are hydraulic control valves that receive analog electrical signals and output 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 valves primarily refer to electro-hydraulic servo valves, which receive analog electrical signals and output modulated flow and pressure accordingly. They are both electro-hydraulic conversion elements and power amplification elements, capable of converting low-power, weak electrical input signals into high-power hydraulic energy (flow and pressure) output.

MOOG servo valves are actuators in servo systems that convert electrical signal inputs into high-power pressure or flow/pressure signal outputs. They are both electro-hydraulic conversion and power amplification elements. Servo valves have high sensitivity and fast response, capable of converting very small electrical signals (e.g., 10 mA) into large hydraulic power (e.g., tens of horsepower or more), and can drive various types of loads. In the past, hydraulic amplification devices such as nozzle baffle valves, jet pipes, or spool valve servo motors were all included in the category of servo valves. Since the 1970s, servo valves have generally referred only to electro-hydraulic servo valves.

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

MOOG servo valves have a relatively complex structure, high cost, and high requirements for oil quality and cleanliness. New servo valves are attempting to overcome these shortcomings, for example, servo valves using electrostrictive elements, which greatly simplify the structure. Another direction is the development of special working oils (such as electroviscous oils). These working oils can change their viscosity coefficient under electromagnetic influence. Utilizing this property, oil flow can be directly controlled via electrical signals. HQJDDV Direct Drive Electro-hydraulic Servo Valve

D665-4746

G761-3008

G761-3004

G761-3016B

G761-3005

G761-3001

G761-3003

G761-3002

G761-3025

G761-3025

G761-3023B

G761-3009

G761-3605

G761-3600

G761-3016

G631-3015B

G631-3800B

G631-3800B

D631-346C

D631-404C The company mainly deals with European and American brands and can source brands from any European country. For example, 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