Available in Single Disc and Double Disc. Used for the isolation of gases, especially in coke oven gas lines where tar content is very high. Ideal valve for isolation of highly toxic gas lines and gases with tar content.
The valve mainly consists of the body, bonnet, disc, stuffing box, stem, superstructure, and drive mechanism. The actuator and bevel gearbox combination drives the stem nut of the bevel gearbox which is coupled with the valve stem and discs. This mechanism works like a screw jack and results in upward/downward movement of the disc resulting in open/close condition of valve. During valve operation, a centrally placed collapsible wedge (connected to the valve stem) exerts sealing force on discs while moving in a downward/close direction and collapses in upward/open direction (avoids rubbing of seating surfaces while opening).
|SIZE RANGE||MAXIMUM OPERATING PRESSURE||MAXIMUM OPERATING TEMPERATURE||TYPE OF SEALING||COONECTION TO PIPELINE||INSTALLATION IN PIPELINE||DRIVE||TESTING|
|- 400 to 3500mm||- Up to 0.3MPa||- Up to 3000C||
- Metal to Metal
|- Flanged ends||
- Vertical in Horizontal pipeline
- Horizontal in Vertical pipeline
- Electric Manual
- Body test
- Seat leakage test
- Operational test