High Quality F4 Type PP-R single female threaded ball valve brass ball

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High Quality F4 Type PP-R single female threaded ball valve brass ball PP-R ball valve with brass ball size:20*1/2''-63*2''

1.Material:Random Polypropylene(Hyosung R200P);
2.ISO9001&ISO14001;
3.Standard:GB/T 18742.3-2002, DIN8077/8078;
4.OEM also ok

Q: Ceramic ball valve, regulating valve standard?: You can refer to the specific national standards

Q: Is the stainless steel ball valve forged steel ball? Which one is suitable for the gas pipeline? (FAQ: This does not mean cast steel can not be used. Cast steel is also acceptable because all the check valves and control valves of natural gas lines are cast. But the casting process has a high probability of defects.

Q: Gate valve, ball valve, the difference between the pressure regulating valve: Gate valve and stop valve are shut-off valve, is the most common two valves. From the exterior, the gate valve is shorter than the cut-off valve, especially the bar valve needs a higher height space. Valve sealing surface has a certain degree of self sealing capacity, its spool depends on the media pressure tight contact with the valve seat sealing surface, to achieve tight leakage. Wedge gate valve spool angle is generally 3~6 degrees, when forced to shut down excessive or temperature changes of the valve core is easy to die. Therefore, high temperature and high pressure wedge gate valve, in the structure have taken certain measures to prevent spool stuck. The valve in the opening and closing valve and valve seat sealing surface contact and mutual friction is always so easy to wear sealing surface, especially in close off the valve, the valve before and after the great pressure, sealing surface wear is more serious. Compared with the cut-off valve, the main advantage is that the flow resistance is small, the flow resistance coefficient of ordinary gate valve is about 0.08~0.12, while the ordinary cut-off valve resistance coefficient is about 3.5~4.5. Opening, closing force is small, the medium can flow in two directions.

Q: Which is the smallest flow valve, globe valve or butterfly valve? Which one is the biggest?: Ball valve with minimum flow resistanceStop valve flow resistance maximum

Q: Q4110 what is the ball valve? What does each number stand for?: It's Q41-10Q- stands for ball valves; 4- stands for connecting flanges; 1- is straight through floating ball; 10 means valve bore 10If it's Q4110, you're not sure

Q: O ball as general regulation of opening extent: Hard seal can be adjusted, soft sealed, please be careful.The opening 0~90 curve is getting faster and faster

Q: Can the check valve replace the ball valve?: No, but the ball valve can not replace the check valve!Ball valve is artificially to switch, the need for external force, there will be the operation is not in time, the action is not rapid, and other ills.The check valve is automatically opened and closed by hydraulic differential pressure, and the action is accurate.

Q: Under what circumstances with the butterfly valve, under what circumstances with the ball valve?: Butterfly valve for occasions:Butterfly valve is suitable for flow regulation. Due to the pressure loss of the butterfly valve in the pipe is relatively large, is about three times the gate, so the choice of valve, the piping system should fully consider the influence of the pressure loss should also be considered robust when closing the butterfly plate to withstand the pressure medium pipeline. In addition, the operating temperature limit of resilient seat materials must be taken into account at elevated temperatures.Butterfly valve structure length and overall height is small, open and close speed is fast, and has good fluid control characteristics, butterfly valve structure principle is most suitable for making big mouth valve. When the butterfly valve is used as a control flow, the most important thing is to choose the size and type of butterfly valve so that it can work properly and effectively.Usually, in throttling, adjusting control and slurry medium, the structure length is short and the opening and closing speed is fast (1/4 rpm). Low pressure cut-off (small pressure), butterfly valve is recommended.Butterfly valves can be used in double adjustment, necking channels, low noise, cavitation and gasification, with little leakage to the atmosphere and corrosive media.

Q: Ball valve, PTFE pad inappropriate choice, is not easy to bad ah?: 120 - 150. TemperatureChasing the answerYes, but not in a high temperature for a long time, like more than 180 degrees centigrade. Because the gasket can not be used after deformation, it will cause valve leakage.

Q: Domestic water pipe ball valve or cut-off valve?: Ball valve: rotate 90 degrees to switch, but the performance of the valve relative to the cut-off valve.

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