Structure Introduction
The design and manufacture of this product completely conform to API spec 6A "Wellhead and X-mas Tree Equipment Specification" requirement, which matches and is interchangeable with any parts conforming to API spec 6A specification. This is a non-return valve, which realizes the metal-to-metal seal by the pressure of the medium. The higher the pressure grows the better the sealing effect is. The valve chamber can bear the pressure of the pipeline anytime.
The body of the valve is made of alloy steel forging; therefore, the valve possesses better mechanical properties and reliable property, can bear higher pressure. The cover plate is connected with the valve body with bolts; the seals include the sealing ring in the cover plate and the seal in the body of the valve, which possesses reliable property. The assembly gap between the cover plate and the body is minimized to as little as zero, which reduces the erosion of the bolt and bolt hole by corrosive medium, and the bolt load is reduced as well.
The sealing face between valve core and valve body is overlay welded with hard alloy of good abrasion resistant and anti-corrosion property. The valve is made of sulfur-resistance steel and the other parts adopt the process of hardness limit so that the valve is applicable in the H2S environment.
Operation Introduction
The valve is installed according to the medium flow direction indicated on the valve body. The valve core moves and seals with both up-flowing pressure and down-flowing pressure, therefore, the valve core shall not be stuck.
Maintenance
1,Replace the valve core and sealing piece
Discharge the pressure inside the valve cavity, dismount bonnet bolt, take out the bonnet, take out the valve core and replace a new one. When replacing the valve core, the core and the valve body shall be ground together. Check whether the bonnet sealing ring is in good condition, if not, replace it immediately.
|
NO |
Description |
Quantity |
Material |
Remark |
|
1 |
Valve body |
1 |
35CrMo |
|
|
2 |
Valve clack |
1 |
35CrMo |
|
|
3 |
Spring |
1 |
65Mn |
|
|
4 |
Valve core |
1 |
2CuA19-4 |
|
|
5 |
"O"ring |
2 |
NBR |
|
|
6 |
Valve Bonnet |
1 |
35CrMo |
|
|
7 |
Valve bonnet bolt |
8 |
35CrMo |
|
|
8 |
Valve bonnet nut |
8 |
40Cr |
|
Jiangsu Shuangxin Petroleum Machinery is a leading company in Jianhu petroleum equipment manufacturing base. In an area of 400 mu, the company constructed 65, 000 square meters of plant building and 5, 000 square meters of research and development building. The company employs 418 people, has modern metal processing, large steel casting, heat treatment and product assembling production line and full ranges of testing equipments. Its product range covers: Drilling fluid manifold\choke and kill manifold\new high energy-efficient pumping unit\BOP\Christmas tree\series of valves\tubing head\casing head\drilling mud pump accessories and so on, part of the products are suitable for offshore oil exploitation. Drilling fluid manifold is famous brand products in Jiangsu province and China's petroleum and petrochemical equipment manufacturing industry, ZJ90DB drilling fluid manifold is high-tech product in Jiangsu province which has been included in national innovation fund project. Production of new high energy-efficient pumping unit marks Jianhu petroleum equipment industry achieves terminal and high-end oriented of the products in the first time. It is awarded first set of major equipment product\excellent new product in Jiangsu province, has been listed in nation torch program. The company has AAA contract credit grade, obtains quality\environment\security system certifications, establish enterprise academician workstation\postdoctoral innovation base of Jiangsu province\petroleum energy-efficient pumping unit engineering research center in Jiangsu province, has obtained more than 60 pieces of patent for invention and patent for utility models. The company is national high-tech enterprise\national implementing standard pilot enterprise for the integration of the IT application with industrialization \technical center in Jiangsu province\demonstration enterprise in Jiangsu province for the integration of the IT application with industrialization\one of the top 50 enterprises in China's petroleum and petrochemical equipment manufacturing industry.
The products are sold to all the markets in China and exported to Europe, America, Middle East and other regions. It has established a foreign trade and information center in Shanghai; It has set up the research, service and sales centers in Houston, the United States and Vancouver, Canada. Shuangxin Petroleum upholds "Details forge classic; Quality defines the future" as the enterprise spirit, makes new and greater contribution to development of China's petroleum equipment manufacturing industry and world energy.
