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Utility and structural characteristics of wafer check valve
First, the use of the wafer check valve Check valve installed in the pipeline system, its main role is to prevent media flow back, check valve is a kind of media pressure open and close automatically. Wafer check valve is suitable for nominal pressure PN1.0MPa~42.0MPa, Class150~25000, nom...Read more -
Check valve installation and use
Straight-through lifting check valves should be installed in horizontal pipelines, vertical lifting check valves and bottom valves are generally installed in vertical pipelines, and media flow from bottom to top. Swing check valves are usually installed in horizontal lines, but can also b...Read more -
What is a check valve ?
The main function of check valve is to prevent medium diversion, prevent the reverse of the pump and its driving device, as well as the leakage of the medium in the container, it is also called check valve, check valve. The opening and closing parts are opened or closed by the flow and forc...Read more -
Selection principle of globe valve
Selection principle of globe valve The shut-off valve refers to the valve whose closing part (disc) moves along the center line of the valve seat. According to this movement form of the valve disc, the change of the valve seat port is proportional to the valve disc stroke. Since the opening...Read more -
What is a globe valve?
What is a globe valve? The opening and closing parts of the globe valve are plug shaped disc, the sealing surface is flat or conical, and the disc moves in a straight line along the center line of the fluid. Stem movement form, there are lifting rod type (stem lifting, handwheel not liftin...Read more -
The advantages and disadvantages of the globe valve and installation precautions
The advantages and disadvantages of the globe valve and installation precautions The globe valve has the following advantages: The shut-off valve has a simple structure and is more convenient to manufacture and maintain. The stop valve has a small working stroke and short opening and closing...Read more -
The working principle of the globe valve
The cut-off valve is also called the cut-off valve. It is the most widely used valve. The reason why it is popular is that the friction between the sealing surfaces during the opening and closing process is small, it is relatively durable, the opening height is not large, the manufacturing ...Read more -
The working principle of the three-piece ball valve
The working principle of the three-piece ball valve is as follows: One, the opening process In the closed position, the ball is pressed against the valve seat by the mechanical pressure of the valve stem. When the handwheel is turned counterclockwise, the valve stem moves ...Read more -
Floating ball valve standards and structural features (2)
6. The middle flange (the connection between the valve body and the left body) has no leakage structure. The connection between the valve body and the left body is sealed by gaskets. In order to prevent leakage due to fire, high temperature or vibration, it is specially designed to The valve bo...Read more -
Floating ball valve standards and structural features (1)
1. Structural characteristics of floating ball valve 1. Unique valve seat sealing structure. Years of ball valve manufacturing experience combined with advanced technology at home and abroad designed the double-line sealing valve seat to reliably ensure the valve seal. Professional valve sea...Read more -
The maintenance of the ball valve
The maintenance of the ball valve 1. It is necessary to find out that the upstream and downstream pipelines of the ball valve have indeed relieved the pressure before disassembling and disassembling. 2. Care must be taken to prevent damage to the sealing surface of parts, especially non-metal...Read more -
Ball valve installation
the installation of the ball valve Matters needing attention in ball valve installation Preparation before installation 1. The pipelines before and after the ball valve are ready. The front and rear pipes should be coaxial, and the sealing surfaces of the two flanges should be parallel. The p...Read more
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