Selection Principles and Advantages of Forged Steel ...
The open or close stroke of the forged steel globe valve stem is relatively short, and it has a reliable cut-off function. Therefore, this type of f orged globe valve is suitable for cutting off, regulating and throttling.
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Pipe with smaller nominal diameters, such as water supply and heat supply projects in urban construction
Pipelines with requirements for flow or pressure regulation, but low regulation accuracy and small diameters
Pipelines with low requirement for flow resistance, less consideration of pressure loss
Pipelines or devices with high-temperature and high-pressure media, such as thermal power plants, nuclear power plants and petrochemical systems
Advantages of Forged Steel Globe Valves
There is usually only one sealing surface on the valve body and disc, which is convenient for maintenance.
The opening height is generally 1/4 of the valve seat channel diameter, which is much smaller than that of gate valves.
During opening and closing, the friction between the valve disc and the sealing surface of the valve body is relatively small.
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Installation of Forged Steel Globe Valves
The installation position, height, inlet and outlet direction must meet the design requirements, and the connection should be firm and tight.
The handle of various manual valves installed on the insulation pipeline should not be downward.
Visual inspection must be carried out before installation of valves. For valves with working pressure greater than 1.0 MPa and a cut-off effect on the main pipe, strength and tightness tests should be carried out before installation; they can be used only after they are qualified.
The stem axis of the globe valve is perpendicular to the sealing surface of the valve seat.
Check Valve Manufacturer
Check valves are unidirectional valves prevent backflow of media. Other terms used by check valve manufacturers for these valves are non-return valve or one-way check valve. Check valves work automatically so there is no need for a wheel or actuator.
Consider a check valve when there is imminent damage due to backflow or to prevent contamination. That being said, there should be the right orientation of the lone inlet and outlet to ensure that the check valves are functioning properly.
This article discusses popular topics on check valves, including their applications, mechanisms, buying considerations, as well as the different classifications of check valves.
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