RESILIENT SEATED · WAFER
D371X
Gear-Operated Wafer Resilient-Seated Butterfly Valve
Desulfurization and compatible utility media. Final configuration is selected against the actual medium, temperature, pressure, materials and control requirements.
KEY SPECIFICATIONS
Confirmed product definition
PRODUCT OVERVIEW
Built around the stated duty
D371X is a wafer butterfly valve with worm gear operation. Desulfurization and compatible utility media.
The final order configuration is confirmed against project conditions and approved technical documents.
SELECTION NOTES
Information to confirm
- Medium and operating temperature
- DN, pressure class and flange or end standard
- Body, disc, stem and seat materials
- On/off or modulating duty and required fail position
- Quantity, documentation and delivery requirements
MATERIALS
Material options
STRUCTURE
Construction details
DIMENSIONS
Dimension and connection drawings
Use the approved order drawing for final installation.
TECHNICAL DATA
Specifications and dimensions
Final dimensions and configuration must follow the approved order drawing.
Technical Specifications
| Model | D371X |
|---|---|
| Nominal diameter | DN50–2000 / DN50–1600 |
| Nominal pressure | PN0.6 / 1.0 / 1.6 MPa |
| Seat test pressure | 0.66 / 1.1 / 1.76 MPa |
| Shell test pressure | 0.9 / 1.5 / 2.4 MPa |
| Operating temperature | NBR -40°C–90°C；FKM -20°C–200°C |
| Connection | Wafer |
| Actuation | Worm gear |
| Sealing | Resilient seated |
| Typical service | Desulfurization service |
| Suitable media | Water, air, natural gas, oil and mildly corrosive fluids |
| Leakage rate | In accordance with GB/T 13927 |
Materials / Performance Data
| Body | WCB, QT450-10, HT200, HT250 |
|---|---|
| Disc | WCB, QT450-10, HT200, HT250 |
| Stem | 2Cr13 |
| Seal ring | Oil-resistant NBR |
| Packing | Flexible graphite |
Dimensions and Connection Data 1
| DN | L | H | HO | A | B |
|---|---|---|---|---|---|
| 50 | 43 | 63 | 306 | 180 | 200 |
| 65 | 46 | 70 | 321 | 180 | 200 |
| 80 | 46 | 83 | 346 | 180 | 200 |
| 100 | 52 | 105 | 387 | 180 | 200 |
| 125 | 56 | 115 | 411 | 180 | 200 |
| 150 | 56 | 137 | 447 | 180 | 200 |
| 200 | 60 | 164 | 572 | 270 | 280 |
| 250 | 68 | 206 | 646 | 270 | 280 |
| 300 | 78 | 230 | 738 | 270 | 280 |
| 350 | 78 | 248 | 761 | 380 | 420 |
| 400 | 102 | 289 | 877 | 380 | 420 |
| 450 | 114 | 320 | 938 | 450 | 470 |
| 500 | 127 | 343 | 993 | 480 | 490 |
| 600 | 154 | 413 | 1131 | 480 | 490 |
| 700 | 165 | 478 | 1476 | 480 | 490 |
| 800 | 190 | 525 | 1533 | 640 | 660 |
| 900 | 203 | 585 | 1655 | 640 | 660 |
| 1000 | 216 | 640 | 1765 | 750 | 860 |
| 1200 | 254 | 755 | 1995 | 850 | 900 |
Dimensions and Connection Data 2
| DN | PN0.6 D0 | PN0.6 n-Φd | PN1.0 D0 | PN1.0 n-Φd | PN1.6 D0 | PN1.6 n-Φd |
|---|---|---|---|---|---|---|
| 50 | 110 | 4-14 | 125 | 4-18 | 125 | 4-18 |
| 65 | 130 | 4-14 | 145 | 4-18 | 145 | 4-18 |
| 80 | 150 | 4-18 | 160 | 8-18 | 160 | 8-18 |
| 100 | 170 | 4-18 | 180 | 8-18 | 180 | 8-18 |
| 125 | 200 | 8-18 | 210 | 8-18 | 210 | 8-18 |
| 150 | 225 | 8-18 | 240 | 8-22 | 240 | 8-22 |
| 200 | 280 | 8-18 | 295 | 8-22 | 295 | 8-22 |
| 250 | 335 | 12-18 | 350 | 12-22 | 355 | 12-26 |
| 300 | 395 | 12-22 | 400 | 12-22 | 410 | 12-26 |
| 350 | 445 | 12-22 | 460 | 16-22 | 470 | 16-26 |
| 400 | 495 | 16-22 | 515 | 16-26 | 525 | 16-30 |
| 450 | 550 | 16-22 | 565 | 20-26 | 585 | 20-30 |
| 500 | 600 | 20-22 | 620 | 20-26 | 650 | 20-33 |
| 600 | 705 | 20-26 | 725 | 20-30 | 770 | 20-36 |
| 700 | 810 | 24-26 | 840 | 24-30 | 840 | 24-36 |
| 800 | 920 | 24-30 | 950 | 24-33 | 950 | 24-39 |
| 900 | 1020 | 24-30 | 1050 | 28-33 | 1050 | 38-39 |
| 1000 | 1120 | 28-30 | 1160 | 28-36 | 1170 | 28-42 |
| 1200 | 1340 | 32-33 | 1380 | 32-39 | 1390 | 32-48 |
APPLICATIONS
Use only after duty review
Desulfurization and compatible utility media. Media compatibility, temperature limits and actuation details must match the selected configuration.
D371X INQUIRY