RESILIENT SEATED · WAFER
D71X
Lever-Operated Wafer Resilient-Seated Butterfly Valve
Compact manual isolation. 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
D71X is a wafer butterfly valve with lever operation. Compact manual isolation.
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
Valve-body construction shown. Actuator arrangement and final configuration vary by order.
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 | D71X |
|---|---|
| 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 | Lever operated |
| Sealing | CenterlineResilient seated |
| Typical service | Clean water, wastewater and circulating water and other available options |
| 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 | 235 | 270 | 110 |
| 65 | 46 | 70 | 250 | 270 | 110 |
| 80 | 46 | 83 | 275 | 270 | 110 |
| 100 | 52 | 105 | 316 | 270 | 110 |
| 125 | 56 | 115 | 340 | 310 | 110 |
| 150 | 56 | 137 | 376 | 310 | 110 |
| 200 | 60 | 164 | 430 | 353 | 150 |
| 250 | 68 | 206 | 499 | 353 | 150 |
| 300 | 78 | 230 | 570 | 380 | 150 |
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 |
APPLICATIONS
Use only after duty review
Compact manual isolation. Media compatibility, temperature limits and actuation details must match the selected configuration.
D71X INQUIRY