Butterfly Valve Manufacturer in China
The butterfly valve locks the opening angle of the butterfly plate frame to control the flow through a locking device, and when the butterfly plate frame is opened 90 degrees vertically to the channel, the valve is fully opened.
The company applies the advanced management concept to the factory management mode, which is perfectly combined with the UKAS-ISO international quality assurance system and the on-site 6s standardized management. From the selection of materials to the finished product leaving the factory, the advanced MES intelligent manufacturing management system (lmes) is used throughout the process to manage product flow and quality traceability, achieving professional, automated, standardized, and procedural organization of production.
Sub-Products of Butterfly Valve
The valve is welded with wear-resistant material, which has good wear resistance, stable and reliable operation, easy operation, sensitive action, small leakage rate, long service life, and is convenient to operate.
The operating torque is small, the operation is light, and it is easy to operate. Use adaptive materials to meet different medium temperatures and corrosive media, such as low temperature, medium temperature, and high temperature.
Characteristics of Butterfly Valve
The metal + graphite sealing layer can provide a completely sealed structure; The valve stem has a blow-out and swing-open ring structure, which makes the valve stem reliably stay in the valve body; Metal seat] The three-way offset butterfly valve with graphite + metal sealing layer has fireproof function and conforms to the API607 clause; The handle or worm gearbox provides the driving force for the valve, and an electric or pneumatic device can also be used to drive it.
We Are a Reliable Butterfly Valve Manufacturer in China
Liangzheng adheres to scientific and technological innovation as the guidance for enterprise development. CAD valve design center, a 3D simulation manufacturing design system, a valve testing center and a testing platform have been established to optimize product structure and ensure the quality and speed of new product development and production.
Application Scenarios of Butterfly Valve
The butterfly valve is mainly used for cutting and throttling on the pipeline. The butterfly valve uses a flexible graphite sealing ring/packing to achieve a leakage of less than 20ppm.
The butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body.It is rotated to achieve the purpose of opening, closing, or adjusting.
The metal + graphite sealing layer can provide a completely sealed structure. The valve stem has an anti-blow-out and swing-open ring structure, which makes the valve stem reliably stay in the valve body.
More About Our Butterfly Valve
- Certifications
Testimonial
Our factory has purchased your company’s butterfly valve for water treatment projects. The product quality is very reliable, the sealing performance is excellent, the corrosion resistance is strong, and the installation and maintenance are very convenient.
Purchasing ManagerU.S.The product has excellent high-temperature and high-pressure performance, which fully meets our oil pipeline requirements. From selection consultation to installation guidance, the service team follows up all the way, and the professionalism is extremely high.
EngineerBrazil
The primary function of butterfly valve is to control the flow of a medium (cut off, regulation) by rotating the butterfly plate frame with hand wheel or driving device. The opening angle of the butterfly valve frame is locked by a locking device to control the flow, and the valve is fully opened when the butterfly valve frame is opened 90 degrees vertically to the channel.
The butterfly valve uses a flexible graphite sealing ring/packing to achieve a leakage rate of less than 20 ppm. The three-offset sealing design is achieved by applying an opening torque, the sealing surface of the butterfly valve suddenly separates, the wear of the sealing surface is small, and the sealing pair has a long service life. The metal + graphite sealing layer can provide a completely sealed structure; The valve stem has an anti-blow-out and swing-open ring structure, which makes the valve stem reliably stay in the valve body; The three-way offset butterfly valve with metal seat and graphite + metal sealing layer has fireproof function and conforms to API607 clause; The handle or worm gearbox provides the driving force for the valve, and electric or pneumatic devices can also be used to drive it.
Transportation of Valves
Before packing, butterfly valves will be checked carefully to prevent damage. In order to avoid valve damage, it is recommended not to use chains or cable ropes as lifting ropes. The valve should be in the fully closed state when transporting the valve. If the valve needs to be stored before assembly, check whether the valve is in the fully closed state; otherwise, close the valve after the metal sealing surface is completely cleaned. When lifting the valve, the lifting rope should be installed on the lifting point on the valve body and should not be on the valve stem or driving device; The valve paint, nameplate and flange water line should be protected during the entire transportation and loading process to avoid any illegal operation causing damage to the valve or sealing surface; If the valve is stored in an outdoor shed or any outdoor protection, it is recommended not to open the packing box before installation.
Use and Maintenance of Butterfly Valve
In the use of butterfly valve, it should be checked periodically to ensure good sealing, non-failure of packing, no excessive wear of sealing surface or no excessive corrosion of valve body.
Corrosion, thus ensuring the safety of the valve. When the inspection determines that the valve has defects, the butterfly valve should be removed and repaired or replaced immediately. Butterfly valves used in oil or water conditions should be inspected every three months, and valves used in corrosive conditions should be inspected every month or according to local regulations. If the valve is repaired or re-assembled, it should be re-inspected and tested according to the manufacturing standards. The replacement parts should be recorded in a list for verification. When re-installing the valve, it is recommended to replace the stud used for connecting the valve; Any repair or replacement of the sealing parts shall be carried out before installing the valve, and the sealing test and shell test shall be carried out before the valve is installed. Any repair of parts shall be provided by the original manufacturer, and Liangzheng Valve shall not be liable for any loss caused by repairs or spare parts provided by third parties; Liangzheng Valve does not advocate leaving pressure parts manufactured by third parties inside the valve; It is not allowed to walk on the valve or add support facilities; Welding repair of online valves will not be allowed, otherwise the manufacturer will suspend quality assurance; When using high-temperature valves, it is recommended to set a warning sign at the workplace.
Installation of Butterfly Valve
Before installing the butterfly valve, carefully check whether the valve mark is consistent with the use requirements; Before installing the butterfly valve, check the valve channel and sealing surface, and use a clean soft cloth to remove any dirt or debris; Check whether the operation of the driving device is flexible; In order to facilitate operation, it is recommended that the position of the valve drive device be 1.2m above the ground; When valves are placed alongside pipelines, sufficient space should be left for operation and maintenance purposes. For valves installed on horizontal pipes, in order to facilitate maintenance and maintenance, it is recommended that the valve rod of the valve be vertical to the pipeline; Users should choose the appropriate bolts and gaskets according to the working temperature, pressure and medium, and tighten the bolts diagonally with a fixed torque.