Structural Features:
1. ST full welded ball valve body is forged from high-quality materials, with the ball side fitting, and the middle flange and neck are all welded
2. There are soft seal structure and hard seal structure between the seat and the cue
3. The stem is designed to prevent blowout from the valve body due to improper operation
4, have fire and anti-static device
5. The seat seal and stem seal are designed with emergency seal grease injection port. Each grease injection port is installed with a grease valve and a built-in one-way valve
6, can support a variety of driving device connection disk.The driving device includes: handle, worm wheel, electric, pneumatic, gas-liquid linkage, electro-hydraulic linkage, etc
7. Convenient position adjustment, ST ball valve provides a special "positioning slot", very easy and accurate to find the ball valve fully open and close.To facilitate the adjustment of actuator limit device
8. buried design, buried installation of the valve, valve stem according to the needs of the project extension, so as to operate on the ground.
Design Specification:
Design criteria: API 6D GB/T 19672 GB/T 12237
Structure length: API 6D ASME B16.10 GB/T 12221
Flange connection standard: ASME B16.5 ASME B16.47 GB/T 9113 JB/T 79 HG/T 20592
For welding connection standard: ASME B16.25 GB/T 12234
Fire protection requirements :API 6FA API 607
Pressure test: API 6D API 598 GB/T 13927 GB/T 26480
Performance Parameters:
Body material: carbon steel、 forged steel、 duplex steel、aluminum bronze etc
Nominal size: NPS 1-1/2 "~60" DN40~DN1500
Pressure range: Class 150~2500 PN10~PN420
Operating temperature: -60℃~+260℃
