MOOG D634 Series Direct Drive Valves (DDV)
Closed-loop control design with dynamic response speed and strong anti-pollution capability.
Product Models
D634-540A D634-541
D634-542A D634-543A
D634-544A D634-545
D634-546A D634-547
D634-548 D634-550
Technical Specifiions
| Parameter |
Value |
Parameter |
Value |
| Nominal diameter |
25cm |
Quantity |
88 units |
| Custom processing |
Yes |
Imported |
Yes |
| Packing specifiion |
31 |
Material |
Cast iron |
| Place of origin |
Germany |
Functional purpose |
Building materials industry |
| egory |
1 |
Color |
Blue |
| Packaging |
Boxed |
Operating temperature |
36°C |
| Dimensions |
30×40×70 |
Type |
Valve |
| Construction |
Steel structure |
Contact |
WhatsApp: +85267220981 |
Compatible Models
MOOG D663Z4307K/D630Z067A P02JONF6VSX2-A
MOOG D663-4007/D061-8412 L03HABD6VSX2-A
MOOG D663Z4307K/D630Z067A P02JONF6VSX2-A
MOOG D663-4007/D061-8412 L03HABD6VSX2-A
MOOG D634-341C R40K02M0NSS2
D633-7303 D634-528A D661-4307C D661-4633
D633-7304 D634-529A D661-4308G D661-4634
D633-7308 D634-530A D661-4309C D661-4635
D633-7310 D634-531 D661-4310C D661-4636
D633-7321 D634-532 D661-4311C D661-4637
D633-7322 D634-533 D661-4312C D661-4640
D633-7324 D634-534 D661-4313C D661-4642
D633-7327 D634-536A D661-4315C D661-4643
Frequently Asked Questions
Product Overview
What is a MOOG Electro-Hydraulic Servo Valve and how does it work?
A MOOG Electro-Hydraulic Servo Valve is an electro-hydraulic conversion and power amplifiion component. Its primary function is to receive analog electrical control signals and then proportionally adjust the output flow and pressure of hydraulic fluid based on these signals, thereby achieving precise control of hydraulic actuators.
Essentially, it converts tiny electrical signals into high-power hydraulic output, making it a core component in electro-hydraulic servo systems.
Most MOOG servo valves are two-stage valves. In the first stage, an electrical signal is sent to a torque motor, which moves a flapper between two nozzles, creating a pressure differential. This pressure difference acts on a spool (the second stage), moving it to control the main hydraulic flow to the load. The valve may use mechanical feedback (e.g., a spring) or an electrical feedback system (LVDT sensor) to ensure the spool position accurately corresponds to the input command signal.
