Check Valve
What Is Check Valve?
A check valve refers to a type of valve in which the opening and closing member is a circular valve disc, and it operates by means of its own weight and the pressure of the medium to block the backflow of the medium. It belongs to the category of automatic valves and is also known as a non-return valve, one-way valve, reflux valve or isolation valve. The movement mode of the valve disc is divided into the lift type and the swing type. The lift check valve is similar in structure to the globe valve, except that it lacks the valve stem that drives the valve disc. The medium enters from the inlet end (the swing check valve has a slanted valve disc that can rotate around an axis, and its working principle is similar to that of the lift check valve. The check valve is commonly used as the foot valve of a water pumping device, which can prevent the backflow of water. When the check valve is used in combination with the globe valve, it can play the role of safe isolation.
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![Brass Swing Check Valve Female]()
Brass Swing Check Valve FemaleItem Number: DY503view more
1.Nominal pressure:1.6Mpa
2.Working medium: Water, Oil
3.Working temperature:-20°C≤ t ≤ 180°C
4.Thread conform to ISO 228 -
![Brass Flange Check No Return Valve]()
Brass Flange Check No Return ValveProduct name: Brass Flange Check Valveview more
Material: Brass ( Hpb59-1 / CW617)
Size: DN40-DN100
Usage: Water
Support：OEM / ODM
Sample: Support
Packing: Export OPP Bag + Carton -
![Brass Horizontal Swing Check Valve]()
Brass Horizontal Swing Check ValveProduct name: Brass Horizontal Check Valveview more
Material: Brass ( Hpb59-1 / CW617)
Size: DN15-DN50
Usage: Water
Support：OEM / ODM
Sample: Support
Packing: Export OPP Bag + Carton -
![Brass Union Check Valve Connect To Meter]()
Brass Union Check Valve Connect To MeterProduct name: Brass Union Check Valve Pre/post Meterview more
Material: Brass ( Hpb59-1 / CW617)
Size: DN15-DN50
Usage: Water
Support：OEM / ODM
Sample: Support
Packing: Export OPP Bag + Carton -
![Wholesale High Quality Brass Vertical Check Valve]()
Wholesale High Quality Brass Vertical Check ValveProduct name: Brass Vertical Check Valveview more
Material: Brass ( Hpb59-1 / CW617)
Size: DN15-DN50
Usage: Water
Support：OEM / ODM
Sample: Support
Packing: Export OPP Bag + Carton -
![Brass One-Way Check Valve With Filter Mesh]()
Brass One-Way Check Valve With Filter MeshProduct name: Brass One-Way Check Valve with Water Pressure Filter Meshview more
Material: Brass ( Hpb59-1 / CW617)
Size: DN15-DN50
Usage: Water
Support：OEM / ODM
Sample: Support
Packing: Export OPP Bag +... -
![Brass Check Valve Dedicated For Water Heater]()
Brass Check Valve Dedicated For Water HeaterProduct name: Brass Check Valve Dedicated for Water Heaterview more
Material: Brass ( Hpb59-1 / CW617)
Size: DN15
Usage: Water
Support：OEM / ODM
Sample: Support
Packing: Export OPP Bag + Carton -
![Brass Magnetic Lockable Check Gate Valve]()
Brass Magnetic Lockable Check Gate ValveProduct name: Brass Magnetic Lockable Check Gate / Globe Valveview more
Material: Brass ( Hpb59-1 / CW617)
Size: 1/2"-2"
Usage: Watering
Support：OEM / ODM
Sample: Support
Packing: Export OPP Bag + Carton -
![PPR Vertical Check Valve]()
PPR Vertical Check ValveWorking medium: waterview more
Docking process:heat fusion connection
Working temperature: 0°C≤ t ≤ 80°C
The pipeline complies with ISO45001, ISO14001, and ISO9001 standards -
![Brass Check Gate Valve]()
Brass Check Gate ValveWorking medium: waterview more
Docking process:BSP/NPT female thread connection
Working temperature: 0°C≤ t ≤ 80°C
The pipeline complies with ISO45001, ISO14001, and ISO9001 standards -
![Brass Vertical Check Valve]()
Brass Vertical Check ValveWorking medium: waterview more
Docking process:BSP/NPT female thread connection
Working temperature: 0°C≤ t ≤ 80°C
The pipeline complies with ISO45001, ISO14001, and ISO9001 standards
Your Professional Check Valve Supplier！
Zhejiang Dunyun Industrial Co., Ltd. is located at No. 1 Dunyun Road, Modern Environmental Protection Equipment Industrial Park, Zhuji City, the hometown of Xi Shi, in the Yangtze River Delta Economic Circle.We mainly produce various copper valves such as "Dunyun" brand water supply systems, central air conditioning systems, heating systems, gas systems, special ball valves, gate valves, globe valves, temperature control valves, gas valves, exhaust valves, filters, underfloor heating water collectors, as well as new aluminum-plastic composite pipes, and other plumbing accessories.
Rich Experience
As we are Actuated Valve Specialists with over 20+ years of experience in valve automation, we have the tools, products, and experience to make sure that your automated valve is durable and has a high life cycle.
Quality Control
All inspections are handled by qualified, experienced personnel aligned with the specifications of each project to fully satisfy our customers and surpass their expectations with a high degree of environmental consciousness to the total satisfaction of our customers.
Our Certifications
We have passed ISO9001 quality management system certification，as well as various product hygiene licenses.
Product Specification
We offers the following product specifications：
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Material |
Brass |
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Item dimensions L x W x H |
0.39 x 0.39 x 0.39 inches |
|
Exterior Finish |
Brass |
|
Inlet Connection Size |
1 Inches |
|
Inlet Connection Type |
Thread |
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Outlet Connection Type |
BSPT |
|
Maximum Operating Pressure |
232 Pound per Square Inch |
|
Number of Ports |
2 |
|
Specification Met |
CSA, ULC |
|
UPC |
738586732397 |
|
Item Weight |
9.2 ounces |
|
Product Dimensions |
0.39 x 0.39 x 0.39 inches |
|
Item Package Quantity |
1 |
|
Batteries Included? |
No |
|
Batteries Required? |
No |
Advantages of Check Valve
System Protection. By making sure fluids and gases only flow in one direction, check valves prevent backflow that could otherwise result in system damage.
Safety Assurance. Certain industrial processes involve the use of hazardous materials. Check valves enhance overall safety by preventing the unwanted movement of dangerous substances in the wrong direction.
Operational Efficiency. Check valves contribute to system efficiency by maintaining the appropriate flow direction. This also helps to optimize performance and reduce energy consumption.
Reliability. Check valves ensure the reliable operation of various process systems, providing a simple yet effective way of maintaining the proper flow of gases and fluids.
Ball check valves: These valves use a ball that sits on a seat to allow fluid to flow in one direction but prevent backflow when the fluid flows in the opposite direction.
Inline check valves (Globe-Style Sliding Disc Check Valve): These valves are installed within the piping system and use a spring-loaded disc to allow fluid to flow in one direction and prevent backflow when fluid flows in the opposite direction.
Swing check valves (Butterfly Check Valve) : These valves use a swinging disc to allow fluid to flow in one direction and prevent backflow when fluid flows in the opposite direction.
Wafer check valves: These valves are installed between flanges and use a spring-loaded disc to allow fluid to flow in one direction and prevent backflow when fluid flows in the opposite direction.
Application
Oil and Gas Industry
Check valves are extensively used in the oil and gas industry to ensure the smooth and uninterrupted flow of fluids in pipelines. They prevent the backflow of oil, gas, or other fluids, which can lead to contamination, equipment damage, or accidents. Check valves are commonly found in oil refineries, petrochemical plants, and natural gas distribution systems.
Water Treatment and Distribution
In water treatment plants and distribution systems, check valves are vital for maintaining the desired flow direction. They prevent the backflow of contaminated water, chemicals, or sewage into the clean water supply, ensuring the safety and quality of drinking water. Check valves are also used in irrigation systems to regulate the flow of water and prevent water hammer, a phenomenon that can damage pipes and equipment.
HVAC Systems
Heating, ventilation, and air conditioning (HVAC) systems rely on check valves to control the flow of refrigerants, air, or water. These valves allow the desired flow in one direction while preventing backflow, ensuring efficient operation and preventing damage to HVAC components. Check valves are commonly used in heat exchangers, chillers, and air handling units.
Power Generation
Check valves play a critical role in power generation facilities, including thermal power plants, nuclear power plants, and renewable energy systems. They are used to regulate the flow of steam, water, or other fluids in turbines, boilers, and condensers. By preventing backflow, check valves help maintain system efficiency, prevent damage, and ensure the safety of personnel.
Pharmaceutical and Food Processing
In pharmaceutical and food processing industries, maintaining hygiene and preventing cross-contamination is of utmost importance. Check valves are used to control the flow of fluids, gases, or ingredients in production lines, ensuring that there is no backflow that can compromise product quality or introduce contaminants. These valves are commonly found in processing equipment, filling machines, and packaging lines.
Automotive and Aerospace
Check valves are employed in automotive and aerospace applications to control the flow of fuel, oil, or hydraulic fluids. They prevent backflow, ensuring that fluids move in the intended direction and preventing damage to critical components. Check valves are commonly used in fuel systems, braking systems, and hydraulic systems in vehicles and aircraft.
Certifications
Package & Delivery
Package: Standard export package or Custom
Delivery: By air express, by sea
FAQ
We're professional check valve manufacturers and suppliers in China, specialized in providing high quality custom service. We warmly welcome you to wholesale cheap check valve from our factory.
Brass Swing Check Valve Female, check valve
