Description
Overview of KNKE Stainless Steel Check Valve
The KNKE Stainless Steel Check Valve is a high-performance valve designed to prevent backflow in industrial pipelines. It operates under pressures ranging from 1.6MPa to 25MPa and temperatures from -29°C to +550°C. The valve is suitable for water, oil, steam, acidic media, and other industrial fluids. Available in sizes from DN15 to DN1200, the valve comes in various connection types, including wafer, flanged, welded, and threaded configurations. It is used across a range of industries, such as petroleum, chemical, pharmaceutical, fertilizer, and power generation.
Key Features of KNKE Stainless Steel Check Valve
- Reliable Backflow Prevention: Designed to prevent reverse flow, pump reversal, and container media release.
- Wide Pressure & Temperature Range: Operates effectively in high-pressure (up to 25MPa) and high-temperature (up to +550°C) environments.
- Durable Materials: Constructed from high-quality stainless steel for long-lasting performance.
- Various Installation Options: Available in wafer, flanged, welded, and threaded configurations.
- Applications: Ideal for water, oil, gas, and steam pipelines in industries like petroleum, chemicals, pharmaceuticals, and more.
Technical Parameters
- Nominal Diameter: DN15 to DN1200
- Nominal Pressure: 1.6MPa to 16MPa
- Test Pressure:
- Strength Test: 1.5 times rated pressure, no leakage
- Sealing Test: Leak-proof under pressure
- Applicable Media: Water, Oil, Gas, Steam, Acidic Media
- Operating Temperature: -193°C to 655°C
- Materials: Stainless Steel, ZG1Cr18Ni9Ti, Stellite, etc.
- Connections: Wafer, Flanged, Welded, Threaded
Materials of Major Parts
| Part |
Material |
| Body |
Stainless Steel, ZG1Cr18Ni9Ti |
| Cover |
304 + D507Mo |
| Disc |
304 + D577 |
| Seat |
Stellite 12, Stellite 6 |
| Applicable Media |
Water, Oil, Steam, Acidic Media |
| Temperature Resistance |
Up to 550°C |
Dimensions
1.6MPa Pressure Rating
| Nominal Diameter DN |
L |
D |
D1 |
D2 |
b |
Z-Φd |
H |
WT (Kg) |
| 50 |
230 |
160 |
125 |
100 |
16 |
4-Φ18 |
135 |
21 |
| 65 |
290 |
180 |
145 |
120 |
18 |
4-Φ18 |
142 |
28 |
| 80 |
310 |
195 |
160 |
135 |
20 |
8-Φ18 |
165 |
38 |
| 100 |
350 |
215 |
180 |
155 |
20 |
8-Φ18 |
180 |
58 |
| 125 |
400 |
245 |
210 |
185 |
22 |
8-Φ18 |
210 |
92 |
| 150 |
480 |
280 |
240 |
210 |
24 |
8-Φ23 |
233 |
130 |
| 200 |
500 |
335 |
295 |
265 |
26 |
12-Φ23 |
304 |
210 |
| 250 |
550 |
405 |
355 |
320 |
30 |
12-Φ25 |
348 |
294 |
| 300 |
650 |
460 |
410 |
375 |
30 |
12-Φ25 |
390 |
367 |
| 350 |
750 |
520 |
470 |
435 |
34 |
16-Φ25 |
430 |
410 |
| 400 |
850 |
580 |
525 |
485 |
36 |
16-Φ30 |
468 |
461 |
| 450 |
950 |
640 |
585 |
545 |
40 |
20-Φ30 |
523 |
570 |
| 500 |
1025 |
705 |
650 |
608 |
44 |
20-Φ34 |
525 |
850 |
2.5MPa Pressure Rating
| Nominal Diameter DN |
L |
D |
D1 |
D2 |
b |
Z-Φd |
H |
WT (Kg) |
| 50 |
230 |
160 |
125 |
100 |
20 |
4-Φ18 |
160 |
22 |
| 65 |
290 |
180 |
145 |
120 |
22 |
8-Φ18 |
175 |
29 |
| 80 |
310 |
195 |
160 |
135 |
22 |
8-Φ18 |
185 |
38 |
| 100 |
350 |
230 |
190 |
160 |
24 |
8-Φ23 |
220 |
61 |
| 125 |
400 |
270 |
220 |
188 |
28 |
8-Φ25 |
248 |
96 |
| 150 |
480 |
300 |
250 |
218 |
30 |
8-Φ25 |
276 |
132 |
| 200 |
550 |
360 |
310 |
278 |
34 |
12-Φ25 |
350 |
213 |
| 250 |
650 |
425 |
370 |
332 |
36 |
12-Φ30 |
410 |
297 |
| 300 |
750 |
485 |
430 |
390 |
40 |
16-Φ30 |
430 |
372 |
| 350 |
850 |
550 |
490 |
448 |
44 |
16-Φ34 |
518 |
415 |
| 400 |
950 |
610 |
550 |
505 |
48 |
16-Φ34 |
560 |
480 |
| 450 |
1025 |
660 |
600 |
555 |
50 |
20-Φ34 |
582 |
610 |
| 500 |
1150 |
730 |
660 |
610 |
52 |
20-Φ41 |
618 |
920 |
Applications of KNKE Stainless Steel Check Valve
- Industries: Petroleum, Chemical, Pharmaceutical, Fertilizer, Power Generation, Low-Temperature Applications
- Applications: Prevent backflow in industrial pipelines, oil transportation, steam systems, and other high-pressure fluid handling systems.
Performance Characteristics
- Reliable Sealing: Provides leak-free operation even under high-pressure and high-temperature conditions.
- Smooth Operation: The valve ensures minimal resistance to flow, preventing water hammer and reducing maintenance.
- High Durability: The valve’s high-quality materials ensure long-lasting performance in demanding industrial environments.
- Wide Application Range: Suitable for a variety of media, including water, oil, steam, and acidic substances.
