LAKSANA AGUNG
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Jual Globe Valve Cast Iron JIS 5K / 10K
 |
| GlobeValve 5K |
| DISKRIPSI | |
|---|---|
| Material body | Cast iron |
| Stem | SUS 420 |
| Disc | SUS 420 |
| Seat | SUS 420 |
| Connection | Flange end JIS 5K / JIS 10K |
| Model | SDNR / NON SDNR |
| Marine Standard | |
The two types of Globe valves mostly used are :
SDSL (Screw down Screw lift)
SDNR (Screw Down Non Return)
SDSL Valve :
In a SDSL valve the valve disc is connected with the valve spindle and moves up or down as the spindle is rotated. This valve is operated with the help of a handwheel which is attached with the valve spindle. Anti-clockwise rotation of the handwheel moves the valve spindle over the threads, lifting the valve disc from its seat and thus opening the valve. Clockwise rotation of the handwheel results in the lowering of the spindle which in turn moves the valve disc over the valve seat, thus closing the valve.
SDNR Valve :
In case of a SDNR valve, the valve disc is not attached to the spindle. The Screw Down non return valves are generally used in bilge systems to prevent back flooding. A guiding vane or guides are provided in order to keep the valve concentric with the seat when it is in the open position. The valve disc opens and closes according to the pressure of the fluid . When the pressure of the fluid becomes greater than the weight of the valve disc, the valve lifts off its seat. The lift of the valve disc is controlled by operating the valve spindle in the clockwise or anticlockwise direction. There is no reverse flow allowed in this type of valve.
Application :
Used in the Bilge and ballast systems, Fresh water transfer systems & Cooling water systems.
