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Pressure Rating: 1.6- 6.4Mpa.
Specification: DN15-50.
Material: cast steel.
Standard screwed: NPT.
Structural Characteristics.
1.Assembled with steam or air heat preservation mechanism and unaffected by the environmental humidity;with operation frequency decreased, its service life prolonged.
2.Provided with filter screen and drainage valve .
3.The valve runs flexibly and reliably with large displacement.
Working Principle.
By taking advantage of thermodynamics characteristics,secondary evaporation will arise when the condensate water is discharged to the lower pressure zone and meanwhile when the viscosity and density of steam differ,the drain valve will open of close.
Main Function.
The valve is applicable in the steam pipeline and equipment to avoid steam leakage and eliminate steam leakage in order to conserve energy and keep from water hammer and other faults.
Main technical parameters and indexes of performance.
| Nominal pressure | PN63 |
| Maximum design pressure(PMA) | 63bar g |
| Maximum design temperature(TMA) | 400 |
| Minimum design temperature(TMI) | -10 |
| Maximum upstream pressure for saturated steam service(PMO) | 42bar g |
| Maximum operating temperature(TMO) | 400 |
| Minimum operating temperature(TMIO) | 0 |
| Minimum differential pressure( PMiX ) | 0.25bar |
| Maximum cold hydraulic test pressure | 95bar g |
Material Of Main Component.
| Name of component | Material of component |
| Valve body, valve cover | WCB |
| Others | stainless steel |
Connecting Dimension.
| Product model | DN (mm) |
Connection | Dimension | ||
| L | H1 | H2 | |||
| GATD42 GATD42 |
15 | Internal thread | 80 | 47 | 54 |
| 20 | Internal thread | 90 | 52 | 59 | |
| 25 | Internal thread | 95 | 59 | 62 | |
| 32 | Internal thread | 105 | 70.5 | 89.5 | |
| 40 | Internal thread | 110 | 70.5 | 89.5 | |
| 50 | Internal thread | 120 | 70.5 | 104.5 | |
| GATD42 GATD42 |
15 | Socket welded | 80 | 47 | 54 |
| 20 | Socket welded | 90 | 52 | 59 | |
| 25 | Socket welded | 95 | 59 | 62 | |
| 32 | Socket welded | 105 | 70.5 | 89.5 | |
| 40 | Socket welded | 110 | 70.5 | 89.5 | |
| 50 | Socket welded | 120 | 70.5 | 104.5 |
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