Wuzhong instrument - common industrial pipeline identification specifications and colors

(1) Check whether there is loosening in the multistage pump pipeline and joint. Turn the multistage pump by hand to see if the multistage pump is sensitive. (2) Lubricate the bearing oil in the bearing body, observe the oil level at the center line of the oil standard, and replace or replenish the lubricating oil in time. (3)、 ...

Stainless steel globe valve is a kind of globe valve, the specific stainless steel raw materials are CF8, CF3, CF8M, CF3M, different raw materials are selected, can be separated from water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media. Stainless steel globe valves are divided into manual stainless steel shut-offs.

Load the organization The role of the loading tissue is to apply a downward loading force from the top of the pressure reducing valve. The loading structure of the FITOK pressure reducing valve is mainly the loading of tension springs. Tension spring loading has the advantage of reliability and low cost, and is the most versatile loading device in pressure reducing valves.

1. According to the processing requirements, some parts need to be polished, and there can be no processing burrs on the appearance; 2. All parts are degreased; 3. After the degreasing is completed, pickling and passivation will be carried out, and the cleaning agent does not contain phosphorus; 4. Rinse with pure water after pickling and passivation.

The flow rate and velocity of the valve mainly depend on the diameter of the valve, and are also related to the resistance of the structure of the valve to the medium, and at the same time have an intrinsic relationship with the pressure, temperature and concentration of the medium of the valve. Two...

(1) Carefully check whether the valve type and specifications meet the requirements of the drawings. (2) Check whether the valve stem and disc are sensitively open, and whether there is any jamming and skewing. (3) Check whether the valve is damaged, and whether the thread of the threaded valve is correct and complete. (4) Check the valve ...

The stem axis of the globe valve is perpendicular to the seat sealing face. The relatively short open or closed stroke of the valve stem and the very reliable blocking action make this valve very suitable for the blocking or adjustment of the medium and the economical application. ...

A safety valve is an automatic valve that uses the medium's own force to expel an additional amount of fluid without any external force to avoid the pressure exceeding the additional safety value. When the pressure has recovered to normal, the valve closes again and prevents the continuous flow of the medium. (TSG ZF001-2006)

The valve is a control component in the fluid transportation system, which has the functions of shut-off, conditioning, diversion, preventing backflow, stabilizing pressure, diverting or overflowing pressure relief. Valves for fluid control systems, from the simplest shut-off valves to the most chaotic valves used in automated control systems, range from ...

First, there is a leak in the safety valve. The industry said that when there is a small leakage in the safety valve, it is generally not easy to find, but even a small leakage point will expand in the erosion. The test method is to test ...

Nuclear power valves are essentially the same as those used for thermal power generation, with gate valves mainly used for high-pressure large-diameter piping, butterfly valves for low-pressure large-diameter piping, and most of the auxiliary piping for small-diameter shut-off valves or angle globe valves. Check valves, safety valves and control valves etc. are also related to other collar valves.

1. Confirm the working conditions: P1, △P, Q, T1, fluid characteristics, allowable noise, etc.; Select the appropriate ANSI pressure class for the body and trim requirements 2. Calculate the required initial Cv value, check the noise and cavitation levels 3. Select the type of trim of the control valve: if there is no noise ...

Routine maintenance of pneumatic conditioning valves When the conditioning valve is packed with graphite-asbestos, lubricating oil should be added to the packing once in about three months to ensure that the conditioning valve is flexible and easy to use. If it is found that the pressure cap of the packing is very low, the packing should be compensated, such as the PTFE dry packing is found to be hardened ...

1) General purpose valve (general purpose valve): a general term for a wide range of valves, also known as ordinary valves. It is not a valve for a specific condition and a specific purpose. Although there is no clear definition of a universal valve, it mainly refers to a pressure below 2MPa, ...

Valves are the most common equipment in chemical enterprises and play a great role. They seem to be simple and easy, but in the actual operation process, they also need to meet the relevant technical requirements, otherwise they will cause safety accidents. Only the valves related to our liquid level appearance are introduced here, and other equipment is not analyzed. ...

Now the valve market is mixed, and illegal traders pretend to be innovative valves to be shoddy in order to make huge profits, which brings great safety hazards to the device project. Therefore, it is necessary to introduce to us the inspection of innovative valves. Now the valve market dealers mainly exist in the valve counterfeiting ...

Check valve, also known as check valve, check valve, is a valve used to avoid the backflow of medium in the pipeline, belongs to a class of active valves, because the pump in the abort operation, the medium will flow backwards, if there is no device check valve at this moment, the water hammer effect will occur in the process of backflow, the pipeline ...

1. Torque maintenance refusal To measure the output torque of the electric actuator, there are mainly mechanical maintenance switches, motor current and voltage power measurement and calculation torque, and sensor-type maintenance devices: mechanical torque maintenance switches were used more before 2000 and were classified as a transitional product.

Classification of valves, types of structures, functional applications, pressure levels, temperature classifications, valve body data classifications, and general classifications The types of valve products are complex, and the statements are inconsistent, some are divided according to the use (such as chemical valves, oil valves, oilfield valves, power station valves, etc.), and some are according to the medium.

1. The safety valve should have the equipment to prevent the hammer from moving by itself and the guide frame to restrain the lever from deviating, and the tension spring safety valve should have the equipment to improve the handle and prevent the adjustment screws from being twisted at will. 2. It should be installed straight in the pot merchant, the container ...