water flow control ball valve
Product parameters
Main material: valve body forged brass, seal PTFE/HNBR
Driver torque: 2N.m
Valve opening torque: <1N.m
Nominal pressure: 2.0MPa
Working medium: water
Fluid temperature 5~95℃
Valve stem size: 10x10
| Ordering model | Product model | Valve type | DN | Thread size | Kv value | Maximum closing pressure difference kPa |
Dimensions | |
| L | H | |||||||
| 15073 | DQF-A-220*DQQ-AK3-220 | 2 way | 20 | G3/4 | 9.5 | 600 | 74 | 43.5 |
| 15076 | DQF-A-220*DQQ-AK2-220 | 2 way | 20 | G3/4 | 9.5 | 600 | 74 | 43.5 |
| Note: The above table is the commonly used recommended models, please consult for details. | ||||||||
Classification
By connection method
Flange connection ball valve: The valve body has flanges at both ends, which are connected to the flanges on the pipeline by bolts. This connection method has high strength and sealing performance, and is suitable for large-diameter pipelines and high-pressure conditions.
Threaded connection ball valve: The valve body has threads, which are directly screwed to the threaded interface of the pipeline. Threaded connection ball valves are easy to install and are suitable for small-diameter pipelines and low-pressure conditions.
Welded connection ball valve: The valve body and the pipeline are connected by welding, which has good sealing and stability, but the installation and disassembly are relatively troublesome, and are suitable for permanently connected pipeline systems.
By ball structure
Floating ball valve: The ball can float freely in the valve body, and the fluid pressure makes the ball fit tightly with the valve seat to achieve sealing. This ball valve has a simple structure and low cost, but is suitable for low-pressure and small-diameter occasions.
Fixed ball valve: The ball is fixed to the valve body through the upper and lower shafts, and the ball will not float in the valve body. Fixed ball valves have high pressure resistance and stability, and are suitable for high-pressure and large-diameter occasions.
FAQ
1.How to determine the open and closed status of the valve?
Most ball valves are equipped with indicators that can clearly show the open and closed status of the valve.
2.How often do water flow control ball valves need to be maintained?
It is recommended to check them every six months to ensure tightness and operational flexibility.
3.Can the valve be installed on a vertical pipe?
The control ball valve can be installed on horizontal or vertical pipes, but it is necessary to ensure that the actuator is in the right position.
4.Is the water flow control ball valve noisy?
The general working noise is small, but it may produce some noise under high flow rate conditions.
5.How to deal with valve failure?
Troubleshooting should include checking the seal ring, cleaning the valve body, and checking the power supply and connection of the actuator.
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