News
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Sany Mini Excavator Hydraulic Team Visits Ningbo Flag-up Hydraulics for Inspection and Exchange
Recently, the director of the Mini Excavator Hydraulic Division of Sany Heavy Machinery led a core technical team to pay a special visit to Ningbo Flag-up Hydraulics Co., Ltd., conducting in-depth corporate inspection and professional technical research. 1 Phase 1: In-depth Seminar Discussi...Read more -
Batch Delivery Completed! Ningbo Flag-up Hydraulic Fully Electronic Control Joysticks Empower Intelligent Upgrading of Construction Machinery
Recently, the fully electronic control joysticks independently developed by Ningbo Flag-up Hydraulic Co., Ltd. have been officially delivered to construction machinery customers in batches. This indicates that Flag Hydraulic’s technological achievements in the industrial control sector ha...Read more -
Innovation Achievements of Hydraulic Pilot Valves for Water Well Drilling
As a national high-tech enterprise and provincial-level Specialized, Refined, Characteristic & Innovative SME, Ningbo Flag-up Hydraulic Co., Ltd. keeps forging ahead in the R&D of pilot valves. Its full range of hydraulic brake valves and charge valves have realized stable mass delivery...Read more -
A Chronicle of Development for Ningbo FLAG-UP Hydraulic Products
As a national-level high-tech enterprise and provincial-level specialized, refined, distinctive and innovative small and medium-sized enterprise, Ningbo FLAG-UP Hydraulic Co., Ltd. has continued to make breakthroughs in the field of brake hydraulics. Its hydraulic brake valves and charge valves ...Read more -
How to choose an solenoid valve correctly?
In fields such as construction machinery, injection molding machines, and metallurgical equipment, cartridge valve-specific solenoid valves serve as the “core brain” of hydraulic systems, whose quality directly determines system stability, equipment service life, and operation & m...Read more -
Which solenoid valves are more durable and stable?
Many equipment owners only know about cartridge valves, but they don’t realize that the tiny solenoid valve inside is what truly determines stability. Why is it that some cartridge valves work leak-free and trouble-free for 3–5 years, while others fail, suffer internal leakage, slow response, or ...Read more -
Ningbo Flag-up Hydraulics Successfully Holds 2025 Annual Advanced Awards Ceremony & 2026 Year of the Horse Annual Gala
On January 31, 2026, Ningbo Flag-up Hydraulics Co., Ltd. grandly held the 2025 Annual Advanced Awards Ceremony and the 2026 Year of the Horse Annual Gala to honor the hardworking contributors of the past year and welcome the arrival of the new year. Company leaders, award-winning employees, and a...Read more -
Why Do the Solenoid Valves You Choose Always Suffer from Slow Response, Leakage, and Poor Durability?
Have you ever encountered situations like this—solenoid valves on the production line responding sluggishly, slowing down the entire workflow? Or perhaps the solenoid valves in your equipment frequently leak fluids or air, not only delaying project timelines but also requiring frequent shutdowns ...Read more -
Why Has the Hydraulic Pilot System Become the Key to Efficient and Precise Control in Construction Machinery?
In industries such as construction machinery, lifting and transportation, metallurgy, and port equipment, the precision, stability, and efficiency of control directly impact operational results and equipment lifespan. Traditional direct hydraulic control systems often rely on operators directly d...Read more -
Why Do Too Short or Too Long Oil Pipes Cause Vibration in the Pilot Handle?
I. Resonance Caused by Over‑Short and Over‑Thin Oil Pipes When the hydraulic oil pipes connected to the handle are both too short and too thin, resonance can be triggered from two perspectives. From a fluid mechanics standpoint, thin pipes restrict the flow cross‑section of hydraulic oil, increas...Read more -
How to Operate an Electric Proportional Joystick Professionally?
How to Use an Electric Proportional Handle Professionally? In wheeled excavators operating with gripper attachments, the electric proportional control handle is a core component for achieving precise gripping operations. It addresses the three main needs of gripper operation: “adjustment of...Read more -
How to Ensure Relief Valves Stabilize Pressure and Avoid Causing Problems in Hydraulic Systems？
Why do some relief valves, after installation, either cause system pressure spikes that damage the seals, or result in unstable pressure fluctuations? To ensure relief valves effectively act as “safety gatekeepers” in hydraulic systems, focus on three key aspects: selection, calibrati...Read more