REXROTH Rexroth proportional valve 4WRZ25E1-220-7X/6 brand new

REXROTH Rexroth proportional valve 4WRZ25E1-220-7X/6 brand new

REXROTH Rexroth proportional valve 4WRZ25E1-220-7X/6EG24N9K4/M, high quality and good price

Shanghai Pumin Industrial Automation Equipment Co., Ltd. specializes in the sales of imported spare parts from Europe and America. The company has its own offices in Germany and the United States for direct procurement, with first-hand sources and competitive prices in the market.

Price advantage: We directly obtain quotes from factories, avoiding many intermediate links. Many factories offer us fixed discounts to ensure that we provide customers with favorable prices.

Wide channels: In addition to factories, we have direct business relationships with many distributors in Europe, which allows us to purchase products that cannot be quoted due to protecting agents.

By amplifying the signal through a proportional amplifier and proportionally outputting current to the proportional solenoid of the proportional valve, the proportional solenoid outputs force and proportionally moves the position of the valve core to control the flow rate and change the direction of the flow, thereby achieving position or speed control of the actuator. In some applications that require high precision in position or velocity, a closed-loop control system can also be formed by detecting the displacement or velocity of the actuator.

A proportional valve is a hydraulic valve composed of an electromagnet, a conical valve core, a spring, a regulating mechanism, etc. It can convert input electrical signals into force or displacement in proportion, thereby continuously controlling parameters such as pressure and flow rate. Specifically, when the proportional valve does not receive an electrical signal, the system input pressure is balanced with the spring force, and the valve core of the proportional valve is in a closed state, preventing flow from passing through; When receiving a changing electrical signal, the electromagnet will be controlled, and the magnetic force will increase or decrease, causing the valve core to move accordingly. The opening area of the valve will change accordingly, thereby controlling the flow rate and achieving proportional output flow. In addition, the proportional coefficient of the proportional valve can usually be adjusted manually or automatically to meet the precise control requirements in different application fields.

The proportional valve consists of two parts: a DC proportional solenoid and a hydraulic valve. The core of continuous control of the proportional valve is the use of proportional solenoid. There are many types of proportional solenoid, but their working principles are basically the same. They are all developed according to the control needs of the proportional valve

REXROTH Rexroth proportional valve 4WRZ25E1-220-7X/6 brand new

Classification by proportional valve control method refers to the classification based on the electrical mechanical conversion mode in the pilot control valve of the proportional valve. Its electrical control part includes various forms such as proportional solenoid, torque motor, DC servo motor, etc.

(1) Electromagnetic electromagnetic valve refers to a proportional valve that uses a proportional electromagnet as an electrical mechanical conversion component. The proportional electromagnet converts the input current signal into force and displacement mechanical signals for output, thereby controlling parameters such as pressure, flow rate, and direction.

(2) Electric type refers to a proportional valve that uses a DC servo motor as an electrical mechanical conversion component. The DC servo motor converts the input electrical signal into rotational speed, and then outputs force and displacement through reduction devices and transformation mechanisms such as screw nuts, gear racks or gear camshafts, further controlling hydraulic parameters.

(3) Electro hydraulic refers to a proportional valve with a structure of a torque motor and nozzle baffle as the pilot control stage. Input different electrical signals to the torque motor and output displacement or angular displacement through the baffle connected to it (sometimes the armature of the torque motor is the baffle), change the distance between the baffle and the nozzle, and change the flow resistance of the oil sprayed from the nozzle, thereby controlling the transmission parameters.

A proportional control valve is a type of control valve that continuously and proportionally controls the flow, pressure, and direction of a hydraulic system based on input electrical signals. Its output flow and pressure are not affected by load changes.

One type is switch control: either fully open or fully closed, with either maximum or minimum flow rate and no intermediate state, such as ordinary electromagnetic through valves, electromagnetic directional valves, and electro-hydraulic directional valves

Another type is continuous control: the valve port can be opened to any desired degree to control the flow rate. This type of valve can be manually controlled, such as throttle valves, or electronically controlled, such as proportional valves and servo valves.

So the purpose of using proportional valves or servo valves is to achieve throttling control of flow through electronic control (although pressure control can also be achieved through structural modifications). Since it is throttling control, there is inevitably energy loss. Unlike other valves, servo valves have greater energy loss because they require a certain amount of flow to maintain the operation of the front-end control oil circuit. Compared with ordinary hydraulic components, proportional valves have the following characteristics:

(1) Electrical signals are easy to transmit and can be easily controlled over long distances.

(2) It can continuously and proportionally control the pressure and flow of the hydraulic system, achieve control over the position, speed, and force of the actuator, and reduce the impact during pressure changes.

(3) Reduced the number of components and simplified the oil circuit.

At the same time, the usage conditions and maintenance of electro-hydraulic proportional valves are the same as those of general hydraulic components, and they have stronger anti pollution performance and reliable operation than servo valves.

These products are widely used in fields such as steel, automotive, papermaking, energy, petrochemicals, textiles, injection molding, metallurgy, aerospace, rubber, water conservancy, power plants, medical and food packaging, metallurgical industry, automotive industry, power equipment, chemical industry, engineering machinery, papermaking industry, shipbuilding industry, and machine tool manufacturing.

Rexroth, Hydac, Parker, WEBTEC, Atos,

EBRO, METRIX, Megger, ODE, HEIDENHAIN, Heidenhain, USA

Samson, Aventics, Bently, Ifm,

Fairchild, Asco solenoid valve, P+F, MOOG servo valve,

Burkert, Balluff, Pilz, Baumer,

Hengstler, Norgren, Mac solenoid valve from the United States, EPRO from Germany,

Danfoss, German HBM sensors, Lenze Lenz, Tiefenbach, and others

The hot selling models are as follows:

Stacked one-way valve \ \ SHR-012 10S

Stacked throttle valve \ \ SHQ-012 10S

Electromagnetic directional valve \ \ SDHL-0610 DC 20S

Electromagnetic directional valve \ \ SDHL-0713 DC 20S

Electromagnetic directional valve \ \ SDHL-0713 DC 20S

Electromagnetic valve \ \ DHE-0631/2/ADC20/P

Vibration Sensor \ \ 32000-28-05-00-080-03-01

Vibration Sensor \ \ 32000-28-05-00-100-03-01

Vibration Sensor \ \ 330106-05-30-05-02-CN

Vibration Sensor \ \ 330106-05-30-10-02-CN

Vibration Sensor \ \ 330106-05-30-10-02-CN

Vibration Sensor \ \ 330106-05-30-15-02-CN

Vibration Sensor \ \ 330106-05-30-20-02-CN

Vibration Sensor \ \ 330106-05-30-20-02-CN

Vibration transmitter \ \ 990-05-50-01-00

Vibration probe \ \ 177230-01-01-05

Probe \ \ 330103-00-03-10-02-CN

Probe \ \ 330103-00-03-10-02-CN

4WEH 16 HD72/OF6EG24N9ETK4/B10

4WRKE 16 W6-200L-3X/6EG24EK31/A5D3M

4WEH 16 J7X/6EG24N9ETS2K4/B10 R900929900

Vibration transmitter TM635-A04-B00-C00-D00-E02-F00-G00

Vibration transmitter TM635-A01-B00-C00-D00-E02-F00-G00

TM101-A06-B00-C00-D00-E00-G00-H000-50

HYDAC HODEK EVS 3104-A-0600-000

HYDAC HODEK EVS 3114-A-0020-000

HYDAC HODEK EVS 3114-A-0060-000

HYDAC HODEK EVS 3114-A-0300-000

METRIX MX2034-41-08-09-05-02-071-00

METRIX MX8030-04-000-070-10-05

METRIX MX8031-080-01-05

METRIX ST5484E-151-432-00

Samson valve 3730-1100

Samson valve 3730-010

Samson valve actuator 3730-200010001000.01

SAMSON valve 4763-001100Y2116.03

HYDAC HODEK EVS3108-H-0060-000

HYDAC HODEK EVS3108-H-0300-000

HYDAC HODEK EVS3108-H-0600-000

HYDAC HODEK EVS3114-A-0600-000

HYDAC HODEK EVS3116-A-0020-000

HDA 4840-A-250-424(10m)

HDA 4840-A-0600-424(10m)

MX2034-01-06-09-05-02-078-00

ST5484E-151-0472-00/8200-003

MX2030-04-000-070-05-05

MX2030-03-000-080-05-05

MX2030-03-000-090-05-05

MX2030-03-000-130-05-05

MX2030-04-000-130-05-05

MX2030-06-005-030-05-05

BURKERT electrode 560376

BURKERT solenoid valve 227220

5PBB1H-AAEAMBJA0DED5K0AA1

5PBB1F-AAEAMBJA0AED5K0AA1

5PBB50-AAEAMBJA0AED5K0AA1

KRACHT 齿轮泵 KP2/50 S10GY00

KRACHT 齿轮泵 KP0/1 K20S M0A 8ML1

KRACHT 齿轮泵 KF63RF2-D15

KRACHT 齿轮泵 KF80RF2-D15

KRACHT 齿轮泵 KF80RF1-D15

KRACHT 齿轮泵 KF63RF1-D15

KRACHT 齿轮泵 KF40RF2-D15

KRACHT 齿轮泵 KF40RF1-D15

KRACHT 齿轮泵 KF32RF2-D15

KRACHT 齿轮泉 KF32RF1-D15

KRACHT 齿轮泵 KF10RF1-D15

Temperature sensor S14455PD3S200

REXROTH speed control valve Z2FS16-3X/S2

REXROTH hydraulic control one-way valve Z2S22-1-5X/V

REXROTH speed control valve Z2FS22-3X/S2

BURKERT 361883

BURKERT 297782

BURKERT 625455

BURKERT Baode 126243

BURKERT Baode 010984

BURKERT Baode 010986

BURKERT solenoid valve 125349

BURKERT angle seat valve 344487

BURKERT 361883

APEXATB280FH-003

Burkert valve 177800

Burkert93208697

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