Product Description:

Advantages and features of Parker pilot check valves

‌No leakage and high sealing performance‌

The leak-free seat valve design ensures that the reverse flow is completely blocked when the check valve is closed, which is suitable for hydraulic systems with strict sealing requirements (such as precision machine tools or high-pressure equipment);

The valve core accurately fits the valve seat through the dual action of spring and oil pressure, reducing the risk of internal leakage, and the leakage rate is much lower than that of conventional check valves.

‌High pressure tolerance and diversified specification adaptation‌

The maximum working pressure can reach 350bar, supporting high-load scenarios (such as heavy machinery or metallurgical equipment);
Provide three sizes of NG10, NG25, and NG32 and direct-acting/pilot optional types to adapt to different flow requirements.

‌Fast response and compatibility‌

The direct-acting structure allows free flow in the A→B direction, and the reverse blocking response time is short, which is suitable for scenarios where dynamic loads are frequently switched;

Supports integration with ISO standard hydraulic interfaces and PLC control systems, which is easy to expand into complex hydraulic circuits (such as closed-loop control systems). ‌

Economical and convenient maintenance‌

The modular design simplifies the assembly process, reduces storage costs and delivery cycles, and is suitable for rapid replacement needs;

The core components are made of wear-resistant alloy materials, with a long maintenance cycle, and key seals support rapid replacement.

Precautions for the use of Parker pilot check valves

Installation and commissioning specifications‌

The cleanliness of the hydraulic oil must meet the NAS 1638 standard (recommended level 7-9). Before installation, the pipeline must be thoroughly flushed and a 10μm filter must be configured to prevent particles from wearing the valve core and valve seat;

During commissioning, it is recommended to set the initial pressure to 50% of the rated value, and gradually load it to the working pressure to avoid instantaneous high pressure impact on the sealing components.

Operation and maintenance requirements‌

Overpressure operation is prohibited (maximum pressure ≤350bar), and system vibration and abnormal noise are monitored regularly. Abnormal conditions require immediate shutdown and inspection;

Check the wear of seals every 500 hours, replace hydraulic oil every 2000 hours, and use Parker original accessories first during maintenance.

‌Response to special working conditions‌

Before long-term shutdown, the oil needs to be drained and anti-rust oil needs to be injected to prevent rust inside the valve body; when starting in a cold environment, the hydraulic oil needs to be preheated to above 15°C;

For high-frequency start-stop scenarios, it is recommended to install a buffer valve or accumulator to reduce the damage to the valve core caused by hydraulic shock.

‌System integration suggestions‌

When used with a proportional solenoid valve or digital amplifier module (such as PCD00A-400), the matching of the solenoid coil current and the pressure curve needs to be verified;

For complex faults, please contact the authorized service provider first to avoid secondary damage caused by non-professionals disassembling the valve body.

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.