Rexroth VT-DFP-A-21 G24K0 0 V Hydraulic Proportional Directional Valve New

Product Specification

Product Description:

The following is a comprehensive analysis of the advantages and characteristics of Rexroth hydraulic proportional directional valves and precautions for use:

‌1. Advantages and characteristics‌

‌Precise flow and direction control‌

The valve core displacement is continuously adjusted through electrical signals to achieve precise control of the flow and direction of hydraulic oil, and the accuracy meets high-demand industrial scenarios (such as precision processing equipment).

Fast response speed, fast switching of actions, suitable for dynamic working conditions such as excavators and injection molding machines.

‌Flexible integration and automation compatibility‌

Support direct connection with PLC and computer systems, convenient for remote control and parameter adaptive adjustment.

Some models (such as 4WREE type) have built-in amplifiers to simplify system wiring and external component dependence.

‌High reliability and environmental adaptability‌

Made of wear-resistant materials, resistant to high pressure (wide working pressure range) and polluted environment, long life.

Wide temperature design (-25℃~+70℃), suitable for harsh working conditions such as metallurgy and engineering machinery.

‌Energy saving and stability optimization‌

Adjust hydraulic parameters on demand to reduce overflow losses, and reduce energy consumption by more than 30% compared with traditional valves.
Built-in overcurrent protection and ramp generator to prevent hydraulic shock and improve movement smoothness.

‌II. Precautions for use‌ ‌Installation and oil management‌ ‌

The oil cleanliness must reach NAS1638 level 7-9 (ISO 16/13~18/15) to prevent contaminants from causing valve core jamming.
Ensure that the pipeline is sealed and tightened during installation, and the valve body needs to be reinforced in the vibration environment to prevent leakage.

‌Electrical connection and debugging‌ ‌
Must match a dedicated amplifier (such as VT series), the shielded wire is grounded at both ends, and the signal line length is ≤30 meters.
Confirm the power polarity (24V DC) before powering on, reverse connection may damage the internal circuit.

‌Parameter setting and safe operation‌ ‌
Configure PID parameters and ramp time through software, prohibit operation in over-power domain (avoid loss of control caused by hydraulic force > electromagnetic force).
The actuator needs to be locked during manual emergency operation to prevent accidents caused by accidental movement.

‌Maintenance and fault prevention‌ ‌
Regularly calibrate the zero point (closed-loop valves need to match LVDT feedback) and check the spring preload.
When adjusting the load sensing proportional valve, it is strictly forbidden to over-tighten the spring to cause excessive rear wheel braking force.

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.