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The main difference between pressure reducing valve and safety valve
1. The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the point of view of fluid mechanics, the pressure reducing va...Read more -
Summary of the differences between globe valves, ball valves and gate valves
Suppose there is a water supply pipe with a cover. Water is injected from the bottom of the pipe and discharged toward the pipe mouth. The cover of the water outlet pipe is equivalent to the closing member of the stop valve. If you lift the pipe cover upward with your hand, the water will be disc...Read more -
What is the CV value of a valve?
CV value is the English word Circulation Volume The abbreviation of flow volume and flow coefficient originated from the definition of valve flow coefficient in the field of fluid engineering control in the West. The flow coefficient represents the flow capacity of the element to the medium, spec...Read more -
A brief discussion on the working principle and use of valve positioners
If you take a walk around the chemical plant workshop, you will definitely see some pipes equipped with round-headed valves, which are regulating valves. Pneumatic diaphragm regulating valve You can know some information about the regulating valve from its name. The key word “regulation...Read more -
Introduction of valve casting process
The casting of the valve body is an important part of the valve manufacturing process, and the quality of the valve casting determines the quality of the valve. The following introduces several casting process methods commonly used in the valve industry: Sand casting: Sand casting c...Read more -
PN nominal pressure and Class pounds ( Lb )
Nominal pressure (PN), Class American standard pound level ( Lb ), is a way of expressing pressure, the difference is that the pressure they represent corresponds to a different reference temperature, the PN European system refers to the pressure at 120 ° C The corresponding pressure, while CLass...Read more -
What Is The Difference Between Gate Valve And Butterfly Valve?
Gate valves and butterfly valves are two very commonly used valves. They are very different in terms of their own structures, usage methods, and adaptability to working conditions. This article w...Read more -
Analysis of the four main causes of leakage of ball valves and measures to deal with them
Through the analysis of the structural principle of the fixed pipeline ball valve, found that the sealing principle is the same, using the “piston effect” principle, and only the sealing structure is different. Valve in the application of the problem is mainly manifested in different ...Read more -
What problems should we pay attention to in the soft gate valve procurement process？
I often encounter customer inquiries as below: "Hi, Beria, I need gate valve, can you quote for us?" Gate valves are our products, and we are very familiar with them. Quotation is definitely no problem, but how can I give him a quotation based on this inquiry? How to quo...Read more -
How to choose between concentric, double eccentric and triple eccentric butterfly valve?
The difference in the structure of the butterfly valve distinguishes four types of butterfly valves, namely: concentric butterfly valve, single eccentric butterfly valve, double eccentric butterfly valve and triple eccentric butterfly valve. What is the concept of this eccentricity? How to decide...Read more -
What Is Water Hammer and How to Fix it?
What is Water Hammer? Water hammer is when there is a sudden power failure or when the valve is closed too fast, due to the inertia of the pressure water flow, a shock wave of water flow is generated, just like a hammer hitting, so it is called water hammer. The force generated by the back and f...Read more -
What are the characteristics of the valve sealing surface material?
The sealing surface of the valve is often corroded, eroded and worn by the medium, so it is a part that is easily damaged on the valve. Such as pneumatic ball valve and electric butterfly valve and other automatic valves, due to frequent and fast opening and closing, their quality and service li...Read more
