Orbit Ball Valve

Design Features:
Nominal Size Range: NPS 2” ~ 24” 
Pressure Rating: Class 150LB - 2500LB
Connection: Flange (RF, FF, RTJ), Butt Welded (BW), Socket Welded (SW)

Design Specifications: 
Design: API599 API6D
Pressure-temperature rating: ASME B16.34
Face-to-face dimensions for butt weld and flanged valves: ASME B16.10
Flange design: ASME B16.5
Butt welding design: ASME B16.25

All valves are designed to comply with the requirements of ASME B16.34, and the ASME as well as customers' requirements as applicable.

Actuators: 
Gear, Electric, Cylinder, Pneumatic, Hydraulic, Lever, Chain wheels

Body Material: 
A216-WCB (Carbon Steel),A217-WC6, WC9, C5,C12, A352-LCB,LCC, A351-CF8M,CF3M etc.

Quality Assurance (QA): 
Every step from procurement through production, welding, assembly, testing, and packaging is in accordance with quality programs and procedures (ASME Section III manual and ISO 9001 manual).

Quality Control (QC): 
The QC is responsible for all aspects of quality, from receiving of material to control of machining, welding, nondestructive examination, assembly, pressure testing, cleaning, painting, and packaging.

Pressure Testing: 
Each valve is pressure tested in accordance with API 6D, API 598, or special customers' requirements as applicable.

WORK PRINCIPLE
Opening Of Orbit Ball Valve
When it is at the closed position, the ball is closely pressed onto the seat under the mechanical pressure of stem. When the handwheel is turned counterclockwise. The stem will move upward, and the anguler plane at the bottom of stem will make the ball sealing face leave the seat. The stem will continue rising and interact with the guide pin in the stem spiral groove to make the ball turn 90 itout friction until the stem rises to the ultimate position and the ball hole is aligned with the valve channel.

Closing Of Ball Valve
During the closing, turn the handwheel clockwise, the stem will move downward and make the ball start rotation. Continue turning the handwheel, and the stem will make the stem and ball turn 90 t ogether under the action of guide pin in the spiral groove embedded in the stem, when it is nearly closed, the ball has turned 90 without contact with the seat,the stem will continue moving downward, the ball sways to press the seat so as to make the sealing face in the seat produce elastic deformation and closely fit the ball sealing face,and therefore, ensuring safe and reliable zero leakage.