Steel swing check valve 19s38nzh for welding Pn 64
| Nominal diameter | Price, UAH without VAT | Availability in warehouse, pcs. | Reserve, pcs. | Weight, kg |
|---|---|---|---|---|
| DN 40 | 0.00 | 0 | 0 | 2.8 |
| DN 50 | 0.00 | 0 | 0 | 3.1 |
| DN 80 | 0.00 | 0 | 0 | 6.5 |
| DN 100 | 0.00 | 0 | 0 | 12.0 |
| DN 150 | 0.00 | 0 | 0 | 24.3 |
| DN 200 | 0.00 | 0 | 0 | 43.0 |
Check valves 19s38nzh PN 64 are devices designed to prevent backflow of the working medium in pipeline systems. These valves are used in various industries, including oil and gas, chemical and water supply.
Purpose and operating principle
19s38nzh valves are check valves that automatically close when the direction of the working medium flow changes. This is achieved due to the liquid pressure that opens the valve shutter (flap). When the pressure decreases, the shutter returns to the closed position under its own weight.
Installation and maintenance
Check valves must be installed taking into account their markings on the body for the correct flow direction. Before installation, it is necessary to clean the pipeline section from contaminants. Connection to the pipeline is carried out by welding.
There are also 19s38nzh check valves with inter-flange design.
| DN | L | H |
|---|---|---|
| 40 | 160 | 76 |
| 50 | 160 | 89 |
| 80 | 195 | 121 |
| 100 | 230 | 152 |
| 150 | 300 | 219 |
| 200 | 370 | 273 |
| Parameter name | Indicator |
|---|---|
| Nominal pressure PN, MPa (kgf/cm²) | 6.4 (64) |
| Connection type | сварной |
| Working environment | water, steam, petroleum products |
| Maximum working environment temperature, °C | 425 |
| Body strength test, MPa | 9.75 |
| Sealing tightness test, MPa | 7.15 |
| Description | Material |
|---|---|
| Sealing ring | Stainless steel 304 |
| Body | Steel |
| Disk | Steel |