Product Description:

Advantages and features of Rexroth flow control valves

‌High-precision flow control‌

Adopting high-precision pilot control structure, combined with the design of throttle hole and adjusting screw, the flow adjustment error can be controlled within ±1.5%, meeting the precise requirements of industrial automation systems for fluid parameters.

Integrated pressure compensation function automatically adjusts the flow according to system pressure changes to ensure stability and reduce the impact of external disturbances on control accuracy.

‌Reliability and long life‌

The valve core and valve seat are made of integrated wear-resistant materials (such as high-strength alloy steel), with excellent sealing performance, extremely small leakage, and a service life of more than 30 million times.

The valve body structure is designed with all-metal sealing, with a pressure rating of up to 315 bar, which is suitable for high-pressure and high-frequency working conditions. It also has the ability to resist hydraulic shock and avoid damage to the system caused by fluid oscillation.

‌Modularity and flexibility‌

Supports plate, flange and threaded installation methods, suitable for different hydraulic system layouts; the flow capacity can be quickly adjusted by replacing the valve trim, and it has strong scalability.

Compact design (such as 2FRM series), volume is reduced by 30%, space is saved and easy to integrate into complex equipment.

‌Environmental adaptability‌

The valve body material is corrosion-resistant and high temperature-resistant (-25~150℃), and the coating can be optionally treated with anti-corrosion, which is suitable for harsh environments such as chemical industry and metallurgy.

Equipped with automatic exhaust function to reduce the risk of cavitation and avoid control lag or noise caused by residual air.

Precautions for use

‌Installation and commissioning specifications‌

Preferably choose near-end installation (no more than 80% of the heating/liquid supply radius from the end) to avoid control failure due to insufficient minimum working pressure difference (≥20 kPa).

The pipeline needs to be thoroughly flushed before installation to prevent welding slag from clogging the throttle hole; the set value is gradually adjusted during commissioning to avoid instantaneous high pressure impact on the valve core assembly.

‌Operational condition restrictions‌

The working oil filtration accuracy must be ≥25μm, and the oil temperature must be controlled within the range of 0-80℃. If it exceeds the range, a cooling or heating device must be installed.

It is forbidden to operate the valve frequently when the engine is turned off or the oil pump fails to prevent the valve core from being worn due to insufficient lubrication.

‌Maintenance and repair requirements‌

Check the wear of the seals every 500 hours. In high temperature environments, the replacement cycle of high temperature resistant lubricating oil needs to be shortened to 300 hours.

When maintaining the proportional solenoid, the power supply must be disconnected to avoid damage to the integrated electronic components (OBE) during live operation.

‌Response to special working conditions‌

In a multi-circuit system, the pressure of each branch must be balanced to prevent uneven load from causing flow distribution deviation.

Before long-term shutdown, the valve stem should be manually rotated to confirm flexibility, and anti-rust oil should be applied to protect key moving parts.

(Note: Advantages and features focus on accuracy, reliability and adaptability; precautions cover the core risk points of installation and commissioning, maintenance and special working conditions)

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.