Five application fields and advantages of buried ball valve instructions for ball valve

Five application fields and advantages of buried ball valve instructions for ball valve

Full electric welding ball valve for a variety of mechanical equipment: a variety of heat treatment process pipeline, a variety of industrial production of liquefied gas and heating pipelines. Buried ball valve double plugging and discharge use torsion spring torque fluctuation seat, no matter the valve is in the open or closed state, the upper, middle and downstream side seat makes liquid barrier, oil path plate in the cavity retention according to the discharge valve metabolism. The automatic pressure relief effect of buried ball valve can make the temperature of the kidney tube retention material rise and cause abnormal pressure change, without the need to rely on the valve, and the function of the seat can be fully automatic pressure relief, which will ensure the safety of the valve in the transportation of liquid substances is very important.
1, full electric welding ball valve for city gas: liquefied gas export pipeline, main road and each branch task supply pipeline, etc.
2, central heating: large and medium-sized heating equipment export pipeline, main road, side tasks.
3, full electric welding ball valve for heat exchanger: pipe and the control loop open and close.
4, smelter: all kinds of liquid pipeline, organic exhaust gas selection pipeline, liquefied gas and heating supply pipeline, fuel supply pipeline.
5, full electric welding ball valve for a variety of mechanical equipment: a variety of heat treatment process pipelines, a variety of industrial production of liquefied gas and heating pipelines. Buried ball valve double plugging and discharge use torsion spring torque fluctuation seat, no matter the valve is in the open or closed state, the upper, middle and downstream side seat makes liquid barrier, oil path plate in the cavity retention according to the discharge valve metabolism. The automatic pressure relief effect of buried ball valve can make the temperature of the kidney tube retention material rise and cause abnormal pressure change, without the need to rely on the valve, and the function of the seat can be fully automatic pressure relief, which will ensure the safety of the valve in the transportation of liquid substances is very important.
Advantages of buried ball valve
1, sealing emergency grease rescue: because of the dirty things in the substance or fire accidents lead to unexpected invalidation of the valve seat, the grease valve brings the mutual connection with the grease injection, the imported pump saves time and effort to inject the sealing grease into the seat sealing position, reduce leakage.
2. Reliable valve stem sealing and high operating torque: in addition to the set specification sealing ring, O-ring is added on the packing screw cap, two-way sealing ensures the stability of valve stem sealing; The addition of high purity graphite packing and sealing grease makes the stem leakage after fire very low. Stem rolling bearings and thrust bearings make the valve easy to operate.
3. Full pipe diameter or reduced diameter: Full pipe diameter or reduced diameter structure can be used according to the actual situation. The total flow diameter of the full-diameter valve is consistent with the nominal diameter of the pipeline, which is conducive to pipeline cleaning.
4, the valve stem can be extended: according to the needs of assembly or operation, the valve stem can be extended. Extended rod ball valve, especially suitable for urban gas and other places that need to be directly buried paved pipelines. Extension valve stem specifications as required by customer.
5. Easy to operate: the valve seat and stem rolling bearing with small friction resistance and excellent self-lubrication are selected to reduce the operating torque of the valve. Therefore, buried ball valves can operate flexibly to the valve for a long time even if they do not provide sealing lubrication.
Manual control valve with rocker or gear, electric or pneumatic ball valve driven by electric device or pneumatic device, make the ball rotation 90. Open or close the valve. Hand – operated ball valve stem is notched at the top. Concave groove azimuth and the length direction of the spinner and the direction of the flow channel is open, and the vertical direction of the commodity flow is closed. Long-term storage valve should be regularly maintained, *** waste. Should pay attention to clean the surface, prevent the damage of the surface. Before construction to check the valve channel and surface, if there are stains, should choose a clean wipe.
Step 1: Category
This instruction covers nominal diameter DN15mm~500mm(1/2″~20″), nominal diameter PN1.6MPa~10MPa(ANSI>
2. Main uses
2.1 The key is used to open or close pipes and machines.
2.2 Use valve material according to material.
2.2.1 Carbon steel valve can use water, steam, diesel and other materials.
2.2.2 Stainless steel plate valves are suitable for corrosive substances.
2.3 The available ambient temperature is in the seat material.
PTFE ≤130℃
PTFE glass fiber ≤160℃
PPL(admixture polystyrene)≤300℃
Step 3: Structure
3.1 Ball valve structure features are shown in Figure 1
3.2 Consumable parts sealing gaskets, packing PTFE or flexible graphite, reliable sealing.
4. Actual operation
4.1 Manual control valve use rocker or gear transmission device, electric or pneumatic ball valve driven by electric device or pneumatic device, so that the ball rotates 90. Open or close the valve.
4.2 Manual ball valve stem top engraved concave groove. Concave groove azimuth and the length direction of the spinner and the direction of the flow channel is open, and the vertical direction of the commodity flow is closed.
4.3 The opening and closing marks of electric and pneumatic ball valves are marked by the position indicator in the electric device and pneumatic device.
5. Storage, maintenance, installation and application
5.1 The valve should be stored in a dry, ventilated room. Both sides of the safety passage of the valve should be blocked.
5.2 Long-term storage valves should be regularly maintained, waste. Should pay attention to clean the surface, prevent the damage of the surface.
5.3 Before construction, carefully check whether the valve mark is consistent with the use requirements.
5.4 Before construction, check the valve channel and surface. If there are stains, clean them with cleaning towels.
5.5 Check whether the packing is jammed before construction, and ensure the tightness of the packing. At the same time, the rotation of the valve stem cannot be prevented.
5.6 Valves must be in the fully open position upon completion of system installation or pipeline hydrostatic test.
5.7 The ball should be opened or closed before use, and part of the ball should not be opened to adjust the valve.
5.8 In the process of opening or closing the manual valve, the rocker should be used to open or close it, and the assistance financial lever or other tools should not be used.
5.9 Valve application should be maintained regularly to check whether there is any damage to the surface and the packing of the gasket. If the damage is invalid, it needs to be repaired and replaced in time.
5.10 For the transmission system of electric and pneumatic valves, please refer to “Valve Electric Device Operation Manual” and “Valve Pneumatic Device Operation Manual” for storage, maintenance, installation and application.