Pipe Valve Manufacturer in China
Pipe valve Reliable sealing and zero leakage: using double sealing structure or metal hard sealing structure, the friction torque of sealing pair is small; The sealing pair of the inclined eccentric structure shortens the closing stroke, reduces the sliding distance of the sealing ring, reduces the friction torque, achieves the effect of instantaneous clutch, and has the function of preventing sand and mud and automatic pressure compensation.
Liangzheng has more than 20 years of experience in valve manufacturing, with a total area of 100 mu and more than 350 employees. After years of hard work and development, it is a valve enterprise integrating scientific research, design, manufacturing, sales and service. It has ISO9001 international quality system certification, American Petroleum Institute API certification, and domestic and foreign authoritative detection quality qualified products, more than 50 invention patents and technological innovation patents. Wait for the certificate.
Various Types of Our Pipe Valve
After starting the pump, the valve inlet pressure must reach the predetermined value before the valve is opened, which can reduce the starting current of the pump and ensure the safety of the motor and electronic control system.
With the butterfly structure, it has the characteristics of small volume and light weight, occupies less space, and reduces the construction cost.The double sealing structure or metal hard sealing structure is adopted, and the friction torque of the sealing pair is small.
Customize PIPE Valve to Suit Your Project
In harsh industrial environments, we can provide services such as material customization for pipe valves, such as valve body/valve plate materials, including ductile iron, carbon steel, etc., which can be customized according to your industry.
Your Pipe Valve Manufacturer in China
Liangzheng applies advanced management concepts to the factory management mode, which perfectly matches the on-site 6S standardized management through the UKAS-ISO international quality assurance system, and the product from material selection to finished product factor.
Pipe Valve Application Scenarios
Easy maintenance: the opening and closing of the valve is driven by the transported medium, and it is automatically locked with the water pump, so no personnel or external force is needed to operate it, which is very convenient.
Gradually opening pump: After starting the pump, the valve inlet pressure must reach the predetermined value before the valve is opened, which can reduce the starting current of the pump and ensure the safety of the motor and electronic control system.
Maintenance is convenient: the opening and closing of the pipe valve is driven by the medium conveyed, and it is automatically locked with the water pump, without the need for personnel and external forces to operate, which is very convenient.
The pipeline valve adopts butterfly valve structure, which has the characteristics of small volume, light weight, less occupied space, and can reduce construction costs. The electro-hydraulic control system of the liquid-controlled plunger valve has been canceled to reduce costs.
More About Our Pipe Valve
- Technical Parameter
- Certifications
| DN | L | H | H1 | DN | L | H | H1 |
|---|---|---|---|---|---|---|---|
| 200 | 190 | 520 | / | 800 | 660 | 1440 | 600 |
| 250 | 250 | 580 | / | 900 | 711 | 1535 | 650 |
| 300 | 270 | 710 | / | 1000 | 811 | 1750 | 700 |
| 350 | 290 | 770 | / | 1200 | 850 | 1960 | 800 |
| 400 | 406 | 830 | / | 1400 | 950 | 2250 | 900 |
| 450 | 432 | 870 | / | 1600 | 1100 | 2500 | 1020 |
| 500 | 457 | 930 | / | 1800 | 1200 | 2820 | 1150 |
| 600 | 508 | 1090 | / | 2000 | 1300 | 3150 | 1250 |
| 700 | 610 | 1260 | 520 |
What Our Clients Say
The performance of this pipe valve is excellent. After two years of use, it is still clean inside, runs stably, and the maintenance team’s feedback is that the operating torque is small, which significantly reduces labor costs.
Purchasing ManagerUSThis pipe valve is wear-resistant and has excellent sealing performance, and the switching life is far beyond expectations.
EngineerSaudi Arabia
The material of the valve body/valve plate of this pipe valve includes ductile iron casting, carbon steel, stainless steel, etc., which can be matched according to your industry.
The opening time (adjustable) of our PIPE valve is 10~60 seconds, and the closing time (adjustable): fast close 1~5 seconds, slow close 5~90 seconds.
The double sealing structure or metal hard sealing structure is adopted, and the friction torque of the sealing pair is small. The sealing pair of the inclined eccentric structure shortens the closing stroke, reduces the sliding distance of the sealing ring, reduces the friction torque, achieves the effect of instantaneous clutch, and has the function of preventing sand and mud and automatic pressure compensation.
Due to the lack of external power supply and components, there are fewer fault points, and the components in the hydraulic cylinder can be maintained during the normal operation of the equipment. The key components are made of high-quality materials and basically require no maintenance. The filter in the external control pipeline has a self-cleaning function.
Working Principle of Pipe Valve
Open the Valve
When starting up, water from the pipe valve passes through filters in control pipelines. The shut-off valve and high-pressure pipe enter the lower part of the diaphragm chamber or piston cylinder. Under the action of water pressure, the diaphragm or piston moves upward, slowly opens the small valve plate, and at the same time, the large valve plate opens at the same time as the small valve plate under the action of water pressure to complete the opening of the pipe. The opening speed of the pipe valve can be adjusted according to the requirements of the working conditions, and the stop valve of the pipeline system can be adjusted to achieve the best effect.
Close the Valve
When the pump stops, the flow rate in the pipe valve drops sharply, and the medium in the valve inlet loses pressure, which automatically closes under the action of the heavy valve plate. Up to 70-80%. The water flow is cut off, and at the same time, part of the return water enters the diaphragm chamber or the upper part of the piston cylinder of the filter, shut-off valve, high-pressure pipe, and control pipeline system, pushing the diaphragm or piston slowly downward to close the small valve plate, ultimately achieving closure. By adjusting the stop valve of the control pipeline system, the closing time of the valve can be realized, so that the peak water hammer can be controlled within the prescribed range.
1. General-type pipe valve, suitable for the situation where the return water pressure of the official website system is greater than 0.1MPa.
2. Regulating pipe valve, on the basis of the ordinary type, by installing the regulating device in the control part, to achieve the adjustment and control of the medium flow in the pipeline network, can be adjusted manually or electrically according to the user’s requirements
3. Sewage type pipe valve, suitable for sewage systems without fiber components. The filter in the external control component can effectively filter the impurity particles in the sewage, ensuring that the medium entering the diaphragm chamber or piston cylinder is clean liquid, so that the external control component works normally. The sewage filter needs to be cleaned regularly to ensure the cleanliness of the filter mesh.
4. Low-pressure return water type pipe valve, suitable for pipeline system return water pressure less than 0.1MPa. Equipped with a balance hammer as an auxiliary closing valve mechanism.
5. The ordinary type pipe valve adopts a diaphragm structure, and the sewage type is recommended to adopt a diaphragm structure; It is recommended to use the piston structure regulating type and PN25 or above.
The maintenance of the pipe valve is simple: there is no external power and components, there are few fault points, and the inspection of parts in the hydraulic cylinder can be carried out while the unit is working normally. The key parts are all made of high-quality materials, and there is basically no need for maintenance. The filter in the external control pipeline has a self-washing function.