Category: BALL VALVE
The design and manufacturing of forged trunnion ball valves from Jiagu ensure maximum service life and reliability. All ball valves are fully open and meet the design requirements of the American Petroleum Institute standards API 608&API 6D and the British standard BS 5351, and comply with the American Society of Mechanical Engineers standard ASMEB16.34.
Structural characteristics
1. The valve body is forged from high-quality materials, and the ball is side entry. The middle flange and neck are connected by bolts.
2. The valve seat is designed according to API 6D and is divided into three sealing structures: DBB, DIB-1, and DIB-2.
There are three types of sealing structures between the valve seat and the ball:
I Traditional plastic soft sealing structure design;
II Design of triangular ring sealing structure(mainly VITON AED);
III metal to metal sealing structure design.
3. Design of PMSS soft and metal to metal sealing structure.
4. The valve stem is designed to anti-blow out, which can prevent the valve stem blow out of the valve body due to improper operation.
5. Equipped with fire safe and anti-static devices.
6. Except for metal to metal seals, all valve seat and valve stem seals are designed with emergency sealing grease injection ports.
Normal sealing does not rely on sealing grease. When the sealing surface is damaged and causes leakage, sealing grease can be injected for emergency repair. Install a grease valve and an embedded check valve at each grease injection port.
7. Drain outlets and vent outlets. A drain valve is installed at the lowest position of the valve body, which can empty and drain the valve chamber;
A vent valve is installed on the upper part of the valve body, which can be used to vent and clean the valve chamber.
8. Mounting pad that can be matched with various actuator, which includes the lever, worm gear, electric, pneumatic, gas over oil , electro-hydraulic actuator, etc.
9. Buried design. Valves installed underground, with valve stems extended according to engineering needs for above ground operation, and corresponding grease injection, drainage, and venting devices extended from pipes to the ground. The height of the buried elevated valve is provided by the customer.
Design Specification
Design: API608 、GB/T 19672、GB/T 12237
Face to Face: API 6D. ASME B16.10. GB/T 12221
Flange : ASME B16.5、ASME B16.47. GB/T9124. JB/T 79. HG/T 20592
BW: ASME B16.25、GB/T 12234
Fire Safe: API 6FA. API 607
Pressure Test: API 6D. API 598. GB/T 13927、GB/T 26480
Performance
Body Material: Carbon Steel、Stainless Steel、Alloy Steel
Size: NPS 1” ~ 60” DN25~DN1600
Pressure: Class150~ 2500 PN10-PN420
Temp.: -196℃ ~ +260℃
Application: petroleum, chemical, metallurgical, light industry, power plants, urban water supply, low-temperature conditions, as well as long-distance pipelines for oil, gas, natural gas, and other industries。
