API Standard Cast Iron Material Water Medium Wafer Butterfly Valve

Introduction

The handle butterfly valve is simple in structure, small in size and light in weight, and only consists of a few parts. And only need to rotate 90° can be quickly opened and closed, simple operation, and the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics.

Connest size

Main part name and material

Characteristics of valve

1. The structure adopts the semi-axis structure, the 90 degree operation is fast to open; The plate has high strength, large flow area, small flow resistance and energy saving.
2. The medium can flow from both sides of the flange disc valve in any direction, can achieve the purpose of connecting or cutting off.
3. No taper pin structure design: the transmission connection between the valve shaft and the valve plate adopts the form of hexagonal connection, which effectively solves the leakage and falling off hidden dangers of the original middle line valve cone pin, greatly improves the valve sealing performance and operation safety, and completely solves the problem of falling off the original middle line butterfly valve cone pin.
4. Good sealing performance: Because the valve adopts no pin design, it completely solves the problem of cone pin leakage of the original middle line butterfly valve; The valve seat adopts the integral vulcanization process. On the one hand, the leakage problem between the valve seat and the body existing in the pressure test of the original middle line valve is solved. On the other hand, the side sealing surface of the vulcanized seat is wider and three O-ring type sealing waterlines are added to make the sealing with the pipe flange more reliable. The flange gasket is saved.

Precautions

1. The valve is installed on the pipeline for opening and closing, and can also be used for adjusting and throttling.
2. The valve can be installed in any direction.
3. Pipe and valve cavity should be cleaned before installation.
4. The valve shall not be subjected to large external forces after installation.
5. The valve is installed on the pipeline that is closed for a long time, and should be opened and closed regularly.
6. When the local minimum temperature is lower than 4℃, insulation protection should be taken; As the end valve should be used with pipe or jacket heating, to prevent the pipe wall temperature below 0℃.
7. It is strictly prohibited to install and use in the pipeline under vibration or the rapid change of medium temperature.
8. The operating condition shall be consistent with the requirements in the performance specification

Yuanda Valve Group Co., Ltd., founded in 1994, is headquartered in Yincun, Longyao, Hebei, China, the hinterland of Bohai Economic Rim surrounding Beijing and Tianjin. With a registered capital of RMB 200 million, Yuanda currently has 8 subsidiaries, of which 6 are in China and 2 overseas. Among them, the core company, which covers an area of 540,000m2 and has more than 3500 employees, is the largest high,midium and low-pressure valve manufacturing base specializing in valve development, manufacturing, and sales in China.

Yuanda has obtained DNV·GL, ISO9001: 2015、ISO14001:2015、OHSAS18001:2007, API6D（6D-0759）, CE, KS, and EAC certifications. Its""trademark is evaluated as Famous Trademark of China and Famous Brand in Hebei Province, and the product series produced under"" is a trademark registered in Korea and products produced under this trademark enjoy a good reputation in both international and domestic markets. Yuanda has been named “Credit Management AA-Rating Enterprise” by the General Administration of Quality Supervision, Inspection and Quarantine and granted the title of “China Quality Trustworthy Enterprise” by China Entry and Exit Inspection and Quarantine Association. It is also a holder of Manufacture License of Special Equipment Level A and Casting Certificates Grades B, B1, and B2, and a member of China Valve Association council, a corporate member of China Foundry Association, and a provincial enterprise technology center in Hebei. Yuanda has been granted the power to carry out import and export operations on its own and is an approved supplier of PetroChina (CNPC) and Sinopec, Guodian, Huaneng, Huadian, Datang and China Power, and China Aluminum, CCESCC, Shougang, Wuhan Iron and Steel Company, and Hebei Iron and Steel Company.

Yuanda manufactures to standards including GB/JB(china), ANSI, API, AWWA, DIN, BS, JIS, EAC, NF and so on, and uses HT200, HT250, QT400, QT450, WCA, WCB, WCC, CF3, CF8, CF3M, CF8M, 1Cr5Mo, LCB, among others, to produce a great variety of valves including gate valves, globe valves, ball valves, butterfly valves, check valves, diaphragm valves, pressure-relief valves, plug valves, and traps, which are available in 12 main categories, 200 series and 4000 specs, totaling 120,000 tons a year. These products are widely used in all civil sectors covering petroleum, petrochemical, chemical, power generation, metallurgy, water system, pharmaceuticals, urban construction, and water supply and drainage.