DIN Standard Cast Carbon Steel 1.6/2.5mpa Pressure Flanged Swing Check Valve

Introduction

The swing check valve has the characteristics of sealing, strong usability, no medium internal and external leakage and easy operation. It successfully solves the problems of poor performance of ordinary valves used in chemical pipelines, easy perforation of shell, poor sealing performance and easy leakage. It is especially suitable for the transmission of ammonia and gas pipelines in chemical industry, and meets the requirements of long-term reliable use. Its sealing, maintainability, safety, etc.

structural features

1. The check valve is used in the pipeline system. Its main function is to prevent the backflow of medium, the reverse rotation of pump and its driving motor, and the discharge of medium in the container. The check valve can also be used on the pipeline to supply the auxiliary system in which the pressure may rise above the main system pressure.

2. The design and manufacture of the product shall comply with American Standard ANSI B16 34. API standard API6D requirements

3. The pressure bearing parts of the valve are cast by casting process, with beautiful surface quality and no surface defects such as sand sticking and cold insulation; The internal quality is stable without internal defects such as porosity, sand holes and cracks.

4. The swing check valve adopts the built-in rocker swing structure. All the opening and closing parts of the valve are installed inside the valve body and do not penetrate the valve body. Except that the middle flange is sealed with sealing gasket or sealing ring, there is no external leakage point as a whole, which makes the possibility of valve leakage.

5. The connection between rocker arm and disc of swing check valve adopts spherical connection structure, so that the disc has a certain degree of freedom within 360 ℃ and appropriate micro position compensation.

6. Alloy steel (13Cr) or hard alloy Stellite 6 is welded on the sealing surface of the swing check valve sealing pair, that is, it will not wear quickly due to erosion when used in medium with fine particles.

Dimensions

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.