Product Description:

Advantages and features of Rexroth hydraulic proportional directional valve

Precise control: Rexroth hydraulic proportional directional valve can continuously and proportionally control the flow, pressure and direction of the hydraulic system according to the input electrical signal. This precise control method enables the hydraulic system to achieve more complex motion control, such as precise adjustment of the position, speed and force of the actuator.

Multiple control methods: Supports multiple operation methods such as manual, mechanical, electromagnetic and hydraulic, which can be flexibly selected according to specific application scenarios to meet the needs of different working conditions.

Strong anti-pollution ability: Compared with electro-hydraulic servo valves, Rexroth proportional valves have stronger anti-pollution ability, can maintain stable operation in relatively harsh working environments, and reduce the risk of failure caused by oil contamination.

Remote control and automation: The use of electrical signals makes it easy for proportional valves to achieve remote control and automated operation, simplifies the control logic of the hydraulic system, and reduces the complexity of the system.

Reduce system impact: Proportional valves can effectively reduce the impact of hydraulic systems during pressure changes, and improve the stability and reliability of the system.

Modular design: Adopting modular design concept, supporting ISO 7368 standard mounting holes, the logic cover of Rexroth standard series can be directly installed, which is convenient for system integration and function expansion.

Cost-effective: Compared with electro-hydraulic servo valves, Rexroth proportional valves are simple to manufacture and more affordable, while having higher performance and reliability.

Precautions for the use of Rexroth hydraulic proportional directional valves

Environmental control:
Ensure that the working environment temperature of the proportional valve is suitable to avoid damage to it by high or low temperature.
Keep the working environment dry to prevent corrosion caused by excessive humidity.

Power selection and distribution:
The selection of power supply power should meet the requirements of the proportional valve to avoid system instability.
When multiple valves are connected in parallel under the same power supply, it should be ensured that the proportional valve can obtain sufficient drive current. It is recommended to power the proportional valve separately as much as possible.

Hydraulic oil cleanliness:
The cleanliness of hydraulic oil directly affects the long-term stable operation of the proportional valve. Oil contamination may lead to the risk of clogging the hydraulic pipeline. There will be restrictions on oil cleanliness in each sample.
Before the oil enters the proportional valve, it must be filtered by a filter with a filtration accuracy of less than 20 microns, and the oil tank must be sealed and an air filter must be added.

Inspection and adjustment of load-sensing proportional valve:
During use, attention should be paid to the inspection and adjustment of the load-sensing proportional valve. When the load-sensing spring is too loose, the rear wheel braking force will decrease. At this time, the load-sensing spring should be adjusted, but it should not be adjusted too tight.

Installation and debugging of directional valve:
When installing the directional valve, it is necessary to pay attention to the different functions represented by the symbols. For example, the O-type symbol means that the oil pump does not unload the load and the piston is stationary; the H-type symbol means that the pump can unload the load, the piston is not affected by the oil pressure, and can be freely extended and retracted.
Before debugging, the proportional directional valve needs to be connected to the mounting plate with screws, and the electrical signal cable needs to be connected to the proportional directional valve.
When performing mechanical zero adjustment, it is necessary to record the valve core position, and use the position where the valve port starts to have output flow as a comparison reference point.

Safe operation:
When performing electrical wiring, the power supply must be cut off first to avoid electric shock.
Do not touch components other than switches, terminal blocks, and jumper wires.

Maintenance and care:
Clean the drain in the air filter regularly to prevent the accumulation of liquid from affecting performance.
When the dust removal device contains corrosive gases in the processing gas, be careful not to allow the corrosive gases to enter the valve.
The zero position and gain adjustment of the proportional valve are set on the amplifier. When working, start the hydraulic system first and then apply the control signal.
Note that the oil drain port of the proportional valve should return to the oil tank separately.
By following the above precautions, you can ensure the efficient operation and long service life of the Rexroth hydraulic proportional directional valve.

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.