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Forged steel gate valve 31ls77nzh for welding Pn 250
| Nominal diameter | Price, UAH without VAT | Availability in warehouse, pcs. | Reserve, pcs. | Weight, kg |
|---|---|---|---|---|
| DN 15 | 2178.00 | 20 | 0 | 4.2 |
| DN 20 | 2618.00 | 2 | 0 | 5.2 |
| DN 25 | 2904.00 | 15 | 0 | 6.3 |
| DN 32 | 4356.00 | 5 | 0 | 8.7 |
| DN 40 | 5522.00 | 15 | 0 | 12.1 |
| DN 50 | 6974.00 | 0 | 0 | 17.2 |
Gate valves 31ls77nzh PN 250 are valves made by hot forging, possessing a compact design and constructed for operation under high pressure. Design of the gate valves is optimized to ensure minimal hydraulic resistance at high-speed gas and liquid flows.
Design Features
- Body of the gate valves, made of A105 (A105N) steel, provides sufficient strength reserve even under extreme loads.
- Wedge gate is designed to reliably shut off the flow under high pressure.
- Maximum operating temperature of the working medium is 425°C.
- The "weld-on" connection method ensures a reliable and hermetic connection to the pipeline by means of welding.
| DN | L | H |
|---|---|---|
| 15 | 111 | 197 |
| 20 | 111 | 197 |
| 25 | 120 | 236 |
| 32 | 120 | 246 |
| 40 | 140 | 283 |
| 50 | 178 | 330 |
| Parameter name | Indicator |
|---|---|
| Nominal pressure PN, MPa (kgf/cm²) | 25.0 (250) |
| Connection type | сварной |
| Working environment | water, steam, petroleum products, gas |
| Maximum working environment temperature, °C | 425 |
| Sealing class | A |
| Body strength test, MPa | 15 |
| Sealing tightness test, MPa | 11 |
| Description | Material |
|---|---|
| Sealing ring | Corrugated SS+graphite |
| Oil seal | A276 420 A276 410 |
| Wheel | A197 |
| Spindle packing | Flexible Graphite |
| Body | A105 |
| Saddle ring | A105 |
| Wedge | A276 420 A276 410 |
| Spindle | A182 F6 |
| Bonnet | A105 |
