Pilot Operated MOOG Hydraulic Servo Valve D661-4627A Medium Pressure

MOOG servo valve D661-4627A

MOOG servo valve working principle introduction.A typical MOOG servo valve consists of a permanent magnet torque motor, a nozzle, a stop plate, a spool, a valve sleeve and a control chamber.When the input coil passes the current, the baffle moves to the right, so that the throttling effect of the right nozzle is strengthened, the flow rate is reduced, and the right side back pressure is increased; At the same time, the throttling effect of the left nozzle is reduced, the flow rate is increased, and the back pressure on the left side is decreased. The forces at both ends of the spool are out of balance and the spool moves to the left. High pressure oil flows from S to C2 to the load. The load return oil flows through the C1 return port and into the fuel tank. The displacement of the spool is proportional to the input current of the torque motor, and the liquid pressure acting on the spool is balanced with the spring force, so the differential current of the torque motor is proportional to the displacement of the spool in the equilibrium state. If the input current is reversed, the flow is also reversed.MOOG servo valves are mainly used as actuators in electrical hydraulic servo systems (see hydraulic servo systems). In the servo system, compared with the electric and pneumatic actuators, the hydraulic actuator has the characteristics of good speed, large output power per unit weight, smooth transmission, strong anti-interference ability and so on. On the other hand, electrical components are used in transmitting signals and correcting characteristics in the servo system.

FAQ

Q1: Wonder if you accept small orders?

A1: Do not worry. Feel free to contact us .in order to get more orders and give our clients more convener ,we accept small order.

Q2: Can you send products to my country?

A2: Sure, we can. If you do not have your own ship forwarder, we can help you.

Q3: What's your payment terms ?

A3: By T/T,LC AT SIGHT,100% full payment.

Q4: How long is your production lead time?

A4:It depends on product and order qty. Normally, it takes us 15 days for an order with MOQ qty.

Q5: When can I get the quotation ?

A5: We usually quote you within 24 hours after we get your inquiry. If you are very urgent to get the quotation.Please call us or tell us in your mail, so that we could regard your inquiry priority.

Fujian Zhichuan Mechanical Equipment Co., Ltd. is a company specializing in the import of electronic hydraulic products trade and sales.Our aim is to provide our customers with high quality imported machinery products andexcellent after-sales service. Our main business covers the fields of construction machinery,photovoltaic equipment, vacuum equipment, mining equipment and metallurgical and automo-tive equipment industries, providing various types of power equipment, electromechanicalproducts, assemblies and components. We sell hydraulic components of well-known brands athome and abroad and sell and design hydraulic cylinders, hydraulic complete systems, customhydraulic systems and renovation projects.

Our products are widely used in major domestic petroleum machinery plants, oil fields. mines, smelters, engineering machinery plants, shipbuilding plants, heavy vehicle manufactur-ing plants and other enterprises and research institutes. Meanwhile, in the field of mining equipment, we have rich experience and advantages and can provide customers with mining equip-ment, mining drilling rigs and accessories, open pit mining equipment, crushing equipment,grinding equipment, ore dressing equipment feeding equipment, conveying equipment, screen-ing equipment lifting storage and transportation equipment, complete sets of safety protectionand monitoring equipment for mining machinery, etc.

In the field of construction machinery, our products such as crawler excavation machinery. wheeled excavation machinery, loading machinery, earth-moving machinery, lifting machinery,industrial vehicles, compaction machinery, heavy vehicles, amphibious vehicles and somehydraulic packages for special vehicles are also widely recognized by our customers. in addi-tion, we also provide tunnel construction sets, pneumatic tools, military construction machinery and other products.

As a professional imported machinery products company, we focus on product quality andservice, and have gathered a group of highly qualified technicians and maintenance personnelwho are able to provide professional technical support and maintenance services to ourcustomers. We implement network sales of stock products through cooperation with distributorsaround the world, and it is our development direction and goal to establish a mutual trust, stableand long-lasting relationship. At the same time, we pursue the principle of following the rulesand cooperating with each other in good faith.