Product Introduction: It is a high-performance electro-hydraulic servo valve under Moog’s D691 series. It adopts advanced spool and valve sleeve design (BSA) and integrates analog or digital sensors to achieve high-precision control of pressure, flow, or shaft position. The valve has the characteristics of high pressure gain, high precision, and excellent dynamic performance, and can be widely used in various industrial control systems that require precise control.
Technical Specifications: The spool overlap is <±1%; the rated flow is based on a pressure drop of 70 bar; it supports analog input, SSI input, encoder input, strain gauge input, fieldbus sensor input, etc.; the main body material is cast iron; the nominal pressure is 16; the nominal diameter is 32; the connection method is threaded; the driving method is electromagnetic.
Functional Features: It has multiple working modes, including flow control, pressure control, flow and pressure control, and differential pressure control through an external pressure sensor; it can realize position, speed, or force control, and is equipped with a spool position controller, which can also be used to control the pressure of the shaft, such as position control in the case of force limit control; it has high precision and dynamic characteristics, and can quickly respond to control signals to ensure the stability and accuracy of the system; the integrated pressure sensor at port A can accurately monitor the pressure change and provide a basis for precise control.
Application Scenarios: It is suitable for the control system of test machines, such as the load simulation and displacement control of material testing machines; it can be used in the hydraulic control system of steam turbines to realize the precise control of the turbine’s speed and position; it is also applied in the control system of aluminum plants and steel plants, such as the control of hydraulic cylinders in rolling mills and the flow control of hydraulic systems in smelting equipment.
