James Duva, Inc. is a reliable supplier of check valves, in addition to many of your piping & welding needs. Our products are reliable, versatile and may be used in extreme conditions.
With two openings in the body (one for fluid to exit and one for it to enter), Check valves allow gas or liquid to flow through it in one direction only. They are designed with safety in mind and to prevent backflow. They are also known as a non-return valve, one way valve, reflux valve or retention valve.
Check valves are common in industrial and household items. They are made in a variety of sizes – and relatively inexpensive. These systems work automatically and do not rely on external control. The body is most often made of plastic or metal.
Most common industrial applications are for fluid systems such as those in chemical or power plants. In the nuclear industry they are used in feed water control systems, dump lines, make up water, and monitoring and sampling systems. However, in aerospace, check valves are quite suitable for high vibration and temperature extreme conditions. They are also ideal for situations when multiple gases are mixed into one gas stream.
An important concept in check valves is the cracking pressure which is the minimum differential upstream pressure between inlet and outlet at which the valve will operate. Typically the check valve is designed for and can therefore be specified for a specific cracking pressure.
In domestic use, check valves are often found in irrigation sprinklers and drip irrigation emitters. They may also be found in heating systems and rainwater harvesting systems.
Types of check valves include: ball, diaphragm, swing or tilting disk, flapper, stock-check, lift-check, in-line, pneumatic and duckbill.
Choose James Duva, Inc.
James Duva, Inc has is not only a supplier for your piping needs but a partner in your project. Our team of professionals have experience in most applications and guide you to the suitable products for your project.
We have an extensive inventory and can deliver small to commercial sized quantities. With James Duva, Inc you’ll get everything you need to get the job done right. Contact us today for more information!