Ductile Iron Materials Rubber Plate Check Valve Flanged Swing Check Valve

Usage

This valve is mainly used at the outlet of pipeline pump in water supply and drainage system, petroleum, chemical industry and other non corrosive liquid industrial departments to prevent medium countercurrent.

Structure and action principle

The valve is connected by flange, the sealing surface adopts inclined design, and the closing time is short, which can reduce the water hammer pressure. The valve is composed of valve body, valve cover, valve disc and other parts.

Valve features

1. The fluid resistance is small, and the sealing surface is less scoured and eroded by the medium.

2. Simple shape, good manufacturing technology and wide application range.

3. The limited position device in the inner cavity of the valve body prevents the opening position of the valve disc from being too high to close, making the service performance of the whole machine more stable

4. During installation, the medium flow direction is consistent with the arrow direction on the valve body.

Storage, installation and use instructions

1. The valve shall be placed in a dry warehouse and shall not be stored in the open air.

2. For long-term storage, it shall be maintained regularly.

3. The operating conditions shall meet the requirements of performance specifications.

4. Pressure test inspection shall be conducted before installation, and installation can be carried out only after meeting the requirements.

5. Clean the inner cavity of pipes and valves before installation.

6. After installation, the product shall not be subjected to large external force.

7. The valve is usually installed in the horizontal pipeline, with the valve cover upward perpendicular to the pipeline, and note that the medium flow direction is consistent with the arrow direction on the valve body.

8. When the local minimum temperature is lower than 4 ℃, thermal insulation protection shall be provided; When it is used as the end valve, the companion pipe or jacket shall be used for heating to prevent the pipe wall temperature from being lower than 0 ℃.

9. It is strictly prohibited to install and use it on the pipeline bearing vibration or rapid change of medium temperature.

Dimension

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.