Check Valve
Your Professional Check Valve Supplier
Zhejiang Youbo Valve Technology Co., Ltd. Founded in 1990, Zhejiang Youbo Valve Technology Co., Ltd. is a high-tech enterprise specializing in the R&D, manufacturing, sales, and service of industrial valves. Headquartered in the "Valve Capital of China," Wenzhou Binhai Industrial Park, Zhejiang Province, the company enjoys convenient transportation access, being close to Wenzhou International Airport and Longwan International Container Terminal.
Why Choose Us
Rich Experience
With over 30 years of experience in the valve industry, the company leverages advanced manufacturing technology, a rigorous quality management system, and innovative R&D capabilities to provide safe, reliable, and efficient valve solutions to global customers.
Stringent Quality Management
Over 20 inspection processes from raw materials to finished products.
Certified by international standards such as ISO 9001, CE, and API 6D.
MES production traceability system ensures traceable quality for every valve.
Solution Design
Based on your process requirements (diversion, merging, reversing), we recommend the optimal product model, material (e.g., 304/316 stainless steel, carbon steel, alloy, etc.), and specifications.
Professional Team Support
We maintains a professional engineering team capable of providing both online and on-site services. With years of project experience, we offer expert advice for both standard and specialized projects.
Check Valve Specifications
|
Item |
Value |
|
Structure |
Check |
|
Application |
General |
|
Place of origin |
China |
|
Power |
Manual |
|
Customized support |
OEM, ODM |
|
Port size |
DN15-DN400 |
|
Warranty |
1 year |
|
Temperature of media |
Medium Temperature |
|
Brand name |
DKV |
|
Media |
Water |
|
Body material |
SS316/SS304/WCB |
|
Connection |
Flange/Female thread |
|
Working pressure |
PN16/25/40 |
|
Working Temperature |
≤400℃ |
|
Standard |
GB, ANSI, BS, DIN, JIS |
|
Medium |
Water, oil, gas |
Features
Prevention of Backflow
The primary function of a check valve performs in a system is to prevent backflow. The onset of backflow could be detrimental to industrial systems in several ways.
Fugitive Emissions Control
As environmental laws become more restrictive, it is important to have valves qualified according to industry standards against leakage of gasses.
Avoiding Water Hammer
Another important use of a check valve is to avoid the occurrence of a water hammer. Water hammer happens when there is a rapid change in the velocity of a fluid. Generally, this occurs if moving fluid suddenly meets an obstacle, such as a valve closing rapidly.
Pressure Balance and Relief
In certain compressor systems, there could be a need to keep some parts pressurized while others are depressurized. Achieving this is possible by strategically locating check valves to ensure air that enters pressurized sections cannot leave.
Type
Inline spring-loaded check valves
Inline spring-loaded check valves use a spring mechanism to assist in closing. The spring ensures a quick response to changes in the flow direction, minimizing backflow risk. They are compact, can be installed in any orientation, and are suitable for systems with low-pressure differentials.
Ball check valves
Ball check valves utilize a ball as the closing mechanism. A common design has a ball with a slightly smaller diameter than the channel it rests in. When fluid enters the valve, it pushes the ball away from the seat and flows around it. This design has both spring-loaded and no-spring options.
Y-shape check valves
Y-shape check valves have an angled flow path resembling the letter "Y." These valves reduce turbulence and pressure drop, having lower flow resistance than inline valves. Their design allows a user to open the valve and inspect internal parts without removing the valve from the line.
Lift check valves
Lift check valves have a disc or piston that lifts vertically to allow flow. They require horizontal installation. They have minimal moving parts and are suitable for heavy-duty applications requiring frequent cycling. Furthermore, they are suitable for saturated steam up to 9 bar (130.5 psi).
Applications
Aircraft Hydraulic Systems
Orifice check valves are extensively used in the hydraulic systems of aircraft landing gear actuators where precise flow control is critical for safe operation.
Water Pump
A check valve performs several functions in water pumps and water distribution systems in general. To ensure that there is always water in the pump for safe starting, check valves are always located at the pump entrance and exit lines.
Boiler
Ball check valves are one of the most important components when controlling water flow from the feed pump to the boiler. As boiler pressure increases beyond the pump pressure, these valves prevent backflow from the boiler to the pump.
Pharmaceutical
In the pharmaceutical sector, check valves are essential for controlling hygienic fluid movement within clean-in-place (CIP) and sterilize-in-place (SIP) processes.
Shipping
Shipping Carriers
We partner with leading reliable carriers such as DHL, USPS, UPS, and FedEx to ensure timely delivery. Rest assured, we'll select the most suitable carrier for your order.
Estimated Delivery Times
Receiving time = Processing time(5-7 days) +Shipping time(5-11 days)
Important note: Please note that all estimated shipping times stated are based on normal conditions.
Our Certificate
FAQ
We're well-known as one of the most professional check valve manufacturers in China. With abundant experience, we warmly welcome you to wholesale high quality check valve made in China here from our factory. Customized orders are welcome.
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