PRODUCT NAME:
One. Structure and characteristics
1. Good sealing, small friction between the sealing surfaces, and long life.
2. The middle flange is a square structure, and the valve stem is connected by an intermediate rod.
3. The sealing surface is made of Babbitt alloy, which has good sealing performance and long service life.
4. The sealing surface of the valve body adopts a spherical convex shape, which is sealed with the valve foot in line.
5. The opening or closing stroke of the valve stem is relatively short, and it has a very reliable cut-off action.
2. Product parts
Part Name | Valve body, bonnet | Sealing ring | filler | Packing gland | Stem | Gasket |
J42B-25C | 铸钢 | Babbitt alloy | PTFE | Carbon steel | PTFE | |
J42B-25P | 灰铸铁 | Stainless steel | ||||
J42F-25C | 不锈钢 | PTFE | Carbon steel |
三、试压规范
Nominal pressure PN(MPA) | test pressure PS(MPa) | Applicable medium | proper temperature(℃) | |
2.5 | 3.8 | Ammonia, ammonia liquid, etc. NH3 | Babbitt alloy-40℃+150℃ | Tetrafluoro-40℃+200℃ |
4.0 | 6.4 |
PRV PRODUCT:DJ41W type low temperature globe valve
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