Packaging & Delivery
DA/DAW pressure valve are typically packaged securely to prevent damage during transit. The packaging includes:
Protective Wrapping: To safeguard the pump from environmental damage.
Custom Crates: For larger, heavier pumps, ensuring safe handling.
Documentation: Includes installation, maintenance instructions, and warranty details.
Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.
DA/DAW pressure valve FAQ:
1. What is the DA/DAW pressure valve ?
DA/DAW pressure valves are pilot‑operated unloading relief valves. DA realizes automatic pressure‑sensing unloading; DAW is equipped with solenoid for remote electric unloading. Built‑in check valve maintains system pressure. ISO sub‑plate mounting, mainly used for accumulator charging and dual‑pump energy‑saving hydraulic circuits.
2. What makes the DA/DAW pressure valve ?
It adopts pilot‑operated structure with integrated check‑valve for pressure holding. DA provides automatic pressure‑triggered unloading, while DAW adds solenoid for remote electric unloading. ISO 5781 standard sub‑plate mounting for interchangeability. Multiple pressure ranges and adjustment options are available. Low pressure hysteresis reduces heat loss and saves energy for dual‑pump & accumulator circuits.
3. What is the working pressure range of DA/DAW pressure valve ?
The maximum working pressure for main oil ports P/A reaches up to 31.5 MPa (315 bar). The return‑oil port T is limited to 10 MPa (100 bar). Multiple pressure setting ranges are optional: 50 bar, 100 bar, 200 bar and 315 bar for different system requirements.
4. Can DA/DAW pressure valve replace other brands?
Yes, it can replace mainstream brand counterparts, as mounting dimensions comply with ISO 5781 standard. Please verify key parameters including nominal size, pressure setting range, rated flow, and solenoid voltage for DAW version before replacement. Customized solutions are available for special working conditions.
5. What is the Response / Switching frequency of DA/DAW pressure valve ?
For DA type (pressure‑actuated): response time depends on system pressure change, typically 20‑60 ms. For DAW type (solenoid controlled), solenoid response is around 40‑80 ms. It is designed for accumulator charging and periodic pump unloading, not for high‑frequency cyclic operation. Actual switching performance is affected by oil viscosity, filtration condition and system flow rate.
6. Do you provide OEM or customized services?
Yes, OEM and customized services are available. We support custom seal materials, pressure ranges, adjustment forms, solenoid voltages for DAW version, logo and packaging. Please offer technical specifications or drawings for accurate quotation.
7. How can I get a quotation quickly
Please provide the following details:
Certifications & Quality Assurance
DA/DAW pressure valve are manufactured in compliance with international standards, ensuring high performance and reliability:
ISO 9001: Certified for quality management systems.
CE Certification: Ensures compliance with European safety, health, and environmental protection standards.
RoHS Compliance: Ensures the pump does not contain hazardous materials.
Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.
FAQ
1.What's our advantages?
Factory established in 2005;
With a great deal of production experience;
80+ employees become the professional team;
Constant updated ERP system ensure efficiency of work;
Sophisticated equipment ehanced the accuracy of products;
Professional salesmen provide the greast service;
With a large number of famous customers all over the world;
Great after-sales service;
With the long term cooperation with famous logistics and express company in China,provide the better goods service.
2.What is your payment terms?
Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.
3.Can you make my own brand on the products?
Of course we can. Just send me your logo we can make it for you.
4.What is our main export market?
America(40.5%):USA, Canada, Argentina, Brazil
Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.
Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.
Others(5.8%).
The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.
The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.
The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems. 
The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions. 
