Emergency shutdown valve
A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.
Key words:
Classification:
Ductile iron valve series
Description
A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.
◆ Product overview
900X emergency shut-off valve, is a water supply system for fire water and domestic water in parallel, used to deploy the water supply direction of the valve. When a fire occurs, the fire is in urgent need of a large amount of water, and the 900X emergency shut-off valve immediately cuts off the domestic water to ensure sufficient fire water; when the fire stop water pressure decreases, the valve automatically opens and is normally open to restore the domestic water supply. The valve makes the system do not need to set up a special fire separate water supply network, greatly saving the construction cost and water consumption. The valve has high control sensitivity, safety and reliability, easy debugging and long service life.
◆ Typical installation diagram
◆ Main outline connection dimension
| Nominal diameter DN | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | |
| L | PN1.0MPa | 215 | 240 | 255 | 290 | 310 | 360 | 430 | 510 | 600 | 630 | 700 | 742 | 775 | 925 | 1100 | 1210 |
| PN1.6MPa | 215 | 240 | 255 | 290 | 310 | 360 | 430 | 510 | 600 | 630 | 700 | 742 | 775 | 925 | 1100 | 1210 | |
| H1 | 152 | 145 | 167 | 232 | 288 | 342 | 413 | 502 | 600 | 600 | 685 | 685 | 880 | 1050 | 1225 | 1400 | |
| H | 250 | 250 | 271 | 375 | 455 | 502 | 636 | 781 | 913 | 913 | 1035 | 1035 | 1300 | 1535 | 1793 | 2022 | |
Note: The structure length in this table is in accordance with CJ/T 219-2017.
Product inquiry