Flat Gate Valve Manufacturer in China
The leak-proof flat gate valve is specially designed for natural gas, liquid petroleum gas, oil products, etc. It is designed with a unique structure. The novel structure and good sealing performance completely solve the problems caused by gas coking in the valve, such as not being able to close and not being able to open, effectively improve the sealing performance and service life, and truly achieve zero leakage.
When the internal pressure of the valve is equal, the flap is in the closed state, and the PTFE sealing ring on the valve seat surface forms the initial seal. Each time the valve is opened or closed, the valve seat ring can clean the two sides of the flap.
Liangzheng Valve Co., Ltd. was established in 2003 and has Changzhou Gas Valve Production Base and Binhai General Valve Production Base. Tianjin Water Control Valve Production Base, Fujian Casting Production Base, etc., with a total area of 100 mu, registered capital of 100.98 million yuan, more than 350 employees, after years of hard work and development, is a valve enterprise integrating scientific research, design, manufacturing, sales, and service.
Various Types of Our Flat Gate Valve
It can only be fully open and fully closed, and cannot be adjusted or throttled. The hidden lever elastic seat shut-off valve uses the overall rubber of the valve to produce deformation compensation to achieve a good sealing effect, overcoming the phenomenon of poor sealing.
This valve is mainly suitable for conveying and cutting off the medium in the urban gas pipeline network, can be buried underground, directly connected with PE pipe, no need for steel-plastic conversion joint transition, reducing the project cost.
The Leakage of the Flat Gate Valve Is Worry-Free
Flat Gate Valve It abandons the original middle flange setting, and the fastener connecting the valve body and the valve cover is placed in the valve body, which does not come into contact with the soil, preventing gas leakage caused by the corrosion of the fastener, while effectively reducing the overall volume, reducing the weight of the valve, and reducing the number of leakage points.
Anti-Corrosion of Our Flat Gate Valve
The internal parts of our flat gate valve are made of materials with strong corrosion resistance. The springs and gate plates are treated with chemical ENP, and the valve body is treated with anti-corrosion measures of polyurethane coating after shot peening, which ensures the anti-corrosion ability of the valve in the atmosphere and soil environment, or can be sprayed with polyurea coating according to your requirement, which has the same anti-corrosion performance as the pipeline anti-corrosion.
Company Equipment Introduction
Only with excellent equipment can enterprises truly have strong production capacity and ensure the excellent quality of products. The company has large horizontal machining centers, vertical machining centers, CNC lathes, CNC boring machines, CNC drilling machines, large vertical lathes, CNC grinding machines, General lathe, automatic submerged arc welding equipment, supersonic spraying system, large water and gas pressure test machine, automatic valve painting line, spectrometer, deep cold treatment equipment, ultrasonic thickness gauge, hardness tester, torque life test machine, rubber aging test and other production and testing equipment. More than 400.
Various Applications of Our Flat Gate Valve
The internal parts of the Flat Gate Valve are made of materials with strong corrosion resistance. The springs and gate plates are treated with chemical ENP. After shot peening, the valve shell adopts anti-corrosion measures with polyurethane coating. Shi ensures the anti-corrosion ability of the valve in the atmosphere and soil environment, or it can be sprayed with polyurea coating according to your requirement; the anti-corrosive ability is the same as the pipeline anti-corrosion.
The flat gate valve is designed with a full through-hole, and the valve plate has a guiding hole. When the valve is fully open, the guiding hole and the channel at both ends of the valve body form an integral cylindrical hole with the valve cavity. The flow resistance coefficient of the valve is the same as that of the straight pipe, which can meet the requirements of the clear pipe, especially when the medium containing solid particles or dust impurities passes through the valve, there is no retention phenomenon, and it will not fall into the valve cavity.
When the flat gate valve is fully open or fully closed, the sealing pair completely separates the pipeline channel from the valve cavity, The valve seat sealing pair is completely covered by the gate plate, which prevents the impurities, dust, tar, and air flow in the pipeline network from damaging and eroding the sealing pair, effectively ensuring the sealing performance of the valve and extending the service life of the valve.
More About Our Flat Gate Valve
- Technical Parameters of Flat Gate Valve
- Certifications
| DN (mm) | NPS (in) | L (flange) | L1 (flange) | Seam welding | H1 (manual) | H (manual) | D0 (manual) | H1 (transmission) | H (transmission) | D0 (transmission动) | Transmission | H1 (electric) | H (electric) | D0 (electric) | Electric device |
| 25 | 1 | 165 | — | 85 | 228 | 180 | — | — | — | — | — | — | — | — | — |
| 32 | 1 1/4 | 165 | — | 103 | 231 | 180 | — | — | — | — | — | — | — | — | — |
| 40 | 1 1/2 | 178 | — | 115 | 240 | 250 | — | — | — | — | — | — | — | — | — |
| 50 | 2 | 178 | 216 | 130 | 255 | 250 | — | — | — | — | — | — | — | — | — |
| 65 | 2 1/2 | 190 | 241 | 160 | 355 | 300 | — | — | — | — | — | — | — | — | — |
| 80 | 3 | 203 | 283 | 180 | 360 | 300 | — | — | — | — | — | — | — | — | — |
| 100 | 4 | 229 | 305 | 214 | 400 | 300 | — | — | — | — | — | — | — | — | — |
| 125 | 5 | 254 | 381 | 257 | 460 | 350 | — | — | — | — | — | — | — | — | — |
| 150 | 6 | 267 | 403 | 300 | 500 | 350 | — | — | — | — | — | — | — | — | — |
| 200 | 8 | 292 | 419 | 388 | 570 | 350 | — | — | — | — | — | — | — | — | — |
| 250 | 10 | 330 | 457 | 464 | 680 | 400 | 475 | 700 | 350 | 350 | 0type | 475 | 710 | 500 | SMC-03 |
| 300 | 12 | 356 | 502 | 547 | 750 | 450 | 547 | 870 | 350 | 350 | 0type | 547 | 880 | 305 | SMC-00 |
| 350 | 14 | 381 | 572 | 625 | 875 | 450 | 625 | 995 | 450 | 450 | 1type | 625 | 1015 | 305 | SMC-00 |
| 400 | 16 | 406 | 610 | 712 | 1000 | 500 | 712 | 1120 | 450 | 450 | 1type | 712 | 1130 | 305 | SMC-00 |
| 450 | 18 | 432 | 660 | 759 | 1130 | 500 | 758 | 1280 | 450 | 450 | 1type | 758 | 1300 | 305 | SMC-0 |
| 500 | 20 | 457 | 711 | 880 | 1200 | 600 | 880 | 1350 | 450 | 450 | 1type | 880 | 1430 | 305 | SMC-0 |
| 600 | 24 | 508 | 813 | 1045 | 1420 | 800 | 1045 | 1570 | 500 | 500 | 2type | 1045 | 1650 | 305 | SMC-1 |
| 700 | 28 | 558 | 870 | 1150 | 1650 | 800 | 1150 | 1800 | 500 | 500 | 2type | 1150 | 1910 | 305 | SMC-1 |
| 800 | 32 | 660 | 914 | 1360 | 1880 | 1000 | 1360 | 2040 | 500 | 500 | 2type | 1360 | 2140 | 305 | SMC-1 |
| 900 | 36 | 771 | 1016 | 1510 | 2100 | 1000 | 1510 | 2280 | 600 | 600 | 3type | 1510 | 2390 | 458 | SMC-2 |
| 1000 | 40 | 811 | — | 1715 | 2300 | 1200 | 1715 | 2480 | 600 | 600 | 3type | 1715 | 2590 | 458 | SMC-2 |
What Our Clients Say
We have been cooperating with your company for many years, and the quality of the flat gate valve has always been consistent. The valve has shown excellent stability in high-temperature conditions, and the zero-leakage record has left a deep impression on us. The logistics delivery is on time, the packaging is professional, and the supplier is trustworthy.
ProcurementGermanyYour company’s flat gate valve has always maintained stability in the operation of offshore oil platforms, and the anti-corrosion coating and rapid shut-off function have greatly improved safety.
Operations DirectorBrazilThe material strength of this kind of flat gate valve meets high-pressure environmental requirements, and the price is more favorable than that of a similar imported product, which helps us to improve system efficiency and cooperation experience.
EngineerVietnam
Our flat gate is designed with a full-diameter design; the valve plate has a guiding hole, and when the valve is fully open, the guiding hole and the channel at both ends of the valve body form an integral cylindrical hole with the valve cavity. The flow resistance coefficient of the valve is the same as that of the straight pipe, which can meet the requirements of the clear pipe; especially when the medium containing solid particles or dust impurities passes through the valve, there is no retention phenomenon, and it will not fall into the valve cavity.
Our flat gate valve abandons the original medium flange setting; the fastener connecting the valve body and the valve cover is placed in the valve body, does not contact the soil, prevents gas leakage caused by the corrosion of fasteners, and effectively reduces the overall volume, reduces the weight of the valve, and reduces the number of leakage points.
Flat Gate Valve Maintenance-Free Function:
1. The two valve seats of the flat gate valve adopt a long inclusion surface structure. No matter in which state the valve is, the flap sealing pair and the valve seat sealing pair are always closely together under the action of the spring force, and the flap is always in two
The movement between the seats of the valve seats prevents impurities in the pipeline from entering the valve cavity, and the medium cannot invade the valve cavity when the valve is fully open or fully closed, so that the valve cavity is driven. The equipment and parts are not corroded, and the closure is reliable and in place.
2. The flat gate valve uses two special-structure O-rings with corrosion resistance and wear resistance at the valve stem, and the sealing box adopts two independent sealing seats above and below. The surface of the sealing seat is anti-corrosion.
The plating process with strong corrosion resistance can effectively improve the anti-rust and anti-corrosion ability, prolong the service life of the sealing ring, and the upper sealing seat can be used in case of leakage at the valve stem.
It is a truly maintenance-free product that can be replaced online without stopping the gas supply or reducing the pressure.
3. The top of the flat gate valve is equipped with a modular high corrosion-resistant opening and closing indicator box, which can be replaced at will without affecting the normal operation of the valve.
Forced Sealing Structure of Flat Gate Valve
flat gate valve adopts a multi-group butterfly spring set on the back of two valve seats to provide the sealing force required by the valve, and does not rely on the thrust of the medium to achieve the effect of sealing. Therefore, regardless of the pressure of the pipeline medium, the valve has sufficient and stable sealing force to achieve a good sealing effect.