Precise functions, adapted to the needs of open hydraulic systems
This filling valve focuses on the application scenarios of open hydraulic systems. It is installed between the pump and the downstream secondary hydraulic device (such as the power steering control valve, cylinder, etc.), and assumes the key responsibility of quantitative filling of the accumulator. Its core function is “filling on demand”. According to system requirements, it can take oil from the quantitative pump to fill the accumulator, complete the filling operation at a stable flow rate under the set pressure, and keep the filling state constant within the set pressure range.
During the filling process, although the flow of the downstream auxiliary hydraulic device will be reduced, it will not significantly interfere with the normal operation of the component. As long as the filling valve does not hinder the flow and pressure transmission of the pump, the downstream secondary hydraulic device can always obtain the full system pressure to ensure the stable output of the system power. At the same time, the accumulator filling flow and the upper and lower limits of the accumulator pressure can be set as needed in the production process, providing customized filling solutions for hydraulic systems under different working conditions.
Single and dual circuits, covering multiple application scenarios
The product provides two configurations, single circuit and dual circuit, accurately covering the needs of hydraulic systems of different complexity. The specific comparison is as follows:
Comparison dimensions
Single circuit filling valve
Dual circuit filling valve
Applicable scenarios
Scenarios with relatively simple system structures and high requirements for the independence of a single circuit, such as the single – action control circuit of small construction machinery (e.g., the small arm extension and retraction circuit of a small excavator, etc.)
Complex hydraulic systems with multi – circuit cooperative operations, such as large – scale mining machinery (needing to control actions like excavation and lifting simultaneously) and large – scale hydraulic machine tools (multi – axis linkage processing scenarios)
Features
Simple structure, realizing precise charging control for a single circuit, ensuring the stability and high efficiency of hydraulic power in a single path
Can charge the accumulators of two circuits simultaneously or separately, meeting the pressure and flow requirements of different circuits under complex working conditions
valve
Help equipment complete precise single actions, suitable for simple systems to reduce costs and increase efficiency
Improve the coordination and operation efficiency of multi – circuit systems, making multi – action cooperative operations more smooth and precise
Excellent features, solid performance advantages
In terms of product characteristics, this filling valve shows comprehensive performance advantages:
1. Stress and life expectancy
Parameter
Details
Value
Upper limit charging pressure setting range
70 – 200bar
The charging pressure interval is wide, reducing the start – up frequency of the hydraulic pump, decreasing equipment wear, and improving the service life of the hydraulic pump and the system
2. Flow and flow capacity
3. Structure and environment adaptation
Structural Design
Compact structure
Easy to layout and install in narrow spaces, meeting the integration needs of hydraulic systems for various equipment
Working Medium
Mineral – based hydraulic oil
High universality, suitable for most hydraulic systems
Viscosity Range
2.8 – 380mm²/s
Can work stably in environments with different oil viscosities
Hydraulic Oil Temperature Range
-30℃ to 107℃
Can operate stably in complex environments such as severe cold and high temperature
Cleanliness Standard
Complies with 18/16/13 class and ISO3446 standard
Ensure reliable operation under harsh working conditions, reducing failures caused by hydraulic oil contamination
Maximum Input Pressure
210bar
Suitable for high – pressure working conditions, ensuring system stability
4. Optional configuration
In addition to the single/dual circuit configuration, overflow valves and other components can also be selected to further expand product functions, meet the personalized needs of different users, and provide more flexibility for hydraulic system design. Industry experts said that this single-circuit/dual-circuit filling valve provides key support for the efficient operation of open hydraulic systems with its precise functional design, diverse scene adaptation and excellent performance.
Its launch will not only help improve the operating efficiency and stability of various hydraulic equipment, but will also promote equipment upgrades and technological innovations in industries such as engineering machinery, metallurgy, and industrial manufacturing, injecting new impetus into the development of the hydraulic industry. With the deepening of market promotion and application, it is expected to become a benchmark for filling valve products in open hydraulic systems, leading the industry to a more efficient and intelligent development stage.
Media ContactCompany Name: Ningbo Flag-up Hydraulic Co., Ltd.Email: Send EmailPhone: 86-574-88275662Address:255 Fengcheng Road, Haishu District City: Ningbo State: ZhejiangCountry: ChinaWebsite: https://www.flagup-hydraulic.com/
