Functions & Applications:
The Non-Rising Stem (NRS) Resilient Seated Gate Valve utilizes a cutting-edge, fully rubber-encapsulated wedge to achieve excellent sealing performance through elastic deformation compensation. This advanced design successfully overcomes the persistent issues found in traditional gate valves, such as poor sealing, water leakage, and internal rusting. Thanks to its compact non-rising stem structure, it significantly reduces the space required for installation and operation.
This versatile valve is widely specified as an isolation and regulation device in fluid pipelines across a broad spectrum of industries, including tap water supply, municipal sewage, building construction, petroleum, chemical processing, food and beverage, pharmaceuticals, textiles, electric power, marine/shipbuilding, metallurgy, and modern energy systems.
| Main Component Materials |
| No. |
Name |
Material |
| 1 |
Valve Body |
Ductile Iron |
| 2 |
Bonnet |
Ductile Iron |
| 3 |
Circlip for Bore |
— |
| 4 |
Gate Wedge |
Ductile Iron |
| 5 |
Lifting Nut |
Ductile Iron |
| 6 |
Adjusting Rod |
Stainless Steel |
| 7 |
Adjusting Rod |
Tin Bronze |
| 8 |
O-Ring |
Silicone Rubber |
| 9 |
Handwheel (Drive Cap) |
Ductile Iron |
| 10 |
Rubber Gasket |
NBR (Nitrile Butadiene Rubber) |
| 11 |
Bolt |
— |
| Main Dimensions Table (mm) |
| PN(MPa) |
DN |
Face-to-Face Length |
Center Height |
Flange Diameter d |
Bolt Circle Diameter c |
Quantity & Diameter of Holes PN10 |
Quantity & Diameter of Holes PN16 |
Flange Thickness T (with water line) |
Raised Face Height |
Raised Face Outer Diameter |
| PN10/16 |
PN10/16 |
| 1.0/1.6 |
50 |
178 |
241 |
158 |
125 |
4-Φ18 |
4-Φ18 |
16.5 |
2 |
99 |
| 65 |
190 |
270 |
180 |
145 |
4-Φ18 |
4-Φ18 |
17 |
2 |
118 |
| 80 |
203 |
292 |
196 |
160 |
4-Φ18 |
8-Φ18 |
19 |
3 |
132 |
| 100 |
229 |
333 |
215 |
180 |
8-Φ18 |
8-Φ18 |
20 |
3 |
156 |
| 125 |
254 |
384 |
250 |
210 |
8-Φ18 |
8-Φ18 |
20 |
3 |
184 |
| 150 |
267 |
420 |
280 |
240 |
8-Φ23 |
8-Φ23 |
20 |
3 |
211 |
| 200 |
292 |
512 |
336 |
295 |
8-Φ23 |
12-Φ23 |
21 |
3 |
266 |
| 250 |
330 |
602 |
405 |
350/355 |
12-Φ23 |
12-Φ25 |
25 |
3 |
319 |
| 300 |
356 |
705 |
460 |
400/410 |
12-Φ23 |
12-Φ25 |
28 |
4 |
370 |
| 350 |
381 |
782 |
515 |
460/470 |
16-Φ23 |
16-Φ25 |
28 |
4 |
430 |
| 400 |
406 |
880 |
580 |
515/525 |
16-Φ25 |
16-Φ30 |
28 |
4 |
475 |
| 450 |
432 |
980 |
650 |
565/585 |
20-Φ25 |
20-Φ30 |
29 |
4 |
530 |
| 500 |
457 |
1055 |
670/715 |
620/650 |
20-Φ25 |
20-Φ34 |
29 |
4 |
580 |
| 600 |
508 |
1260 |
780/810 |
725/770 |
20-Φ30 |
20-Φ40 |
38 |
4 |
680 |
| 1 |
800 |
660 |
1650 |
1010 |
950 |
24-Φ34 |
— |
44 |
7 |
905 |
