Product Description
The 900X emergency shut-off valve belongs to a kind of valve that is intended for use in a water supply system in which the fire fighting water and domestic water are connected in parallel and for the control of the direction of water supply.
When a fire breaks out and a large quantity of water is in great need for fire fighting purpose, the 900X emergency shut-off valve cuts off the domestic water supply immediately so as to ensure enough fire fighting water. When the fire fighting is over and the pressure in terms of water use has dropped, the valve switches on automatically to stay in the constantly open state and the normal domestic water supply is restored. This emergency shut-off valve makes it unnecessary to set a separate fire fighting water supply network in the system, thereby greatly reducing the construction cost and water consumption. Furthermore, the valve is high in control sensitivity, safe, reliable, simple to debug and offers a long service life.
Pressure rating: PN10. PN16. PN25/Class150
Size range: DN20mm-DN800mm (3/4" - 32")
Test and inspection: GB/T 13927 API598
| DN | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 |
| L | 150 | 160 | 180 | 200 | 203 | 215 | 241 | 270 | 292 | 330 | 400 | 480 | 550 | 622 | 685 | 750 | 811 | 935 |
| H1 | 247 | 247 | 247 | 278 | 278 | 298 | 313 | 350 | 365 | 420 | 450 | 470 | 490 | 526 | 570 | 570 | 750 | 850 |
| H | 342 | 342 | 342 | 395 | 395 | 405 | 430 | 510 | 560 | 585 | 675 | 730 | 760 | 840 | 910 | 910 | 1110 |




As a professional emergency shut-off valve manufacturer in China, we at Hangda can provide not only control valve, but also knife gate valve, ball valve, plug valve, butterfly valve, forged steel valve, and other valves. Our products are made using materials like carbon steel, alloy steel, stainless steel and other special materials to ensure reliability and long service life. We can also design and manufacture valves according to customers' requirements. Located in Wenzhou City, we are near to highways, airports and ocean ports. This will facilitate the transportation of your goods.
If you have any related need, please contact us via any of the methods listed on the website.