Description
EMT Pig Signaller With A Ball Valve is a good choice for detecting the passage of the pig signaller during the pipeline clean process.
How to judge the switching state of the GB ball valve？
You can judge the valve situation through the following judging method:
The following methods determine the switching status of GB ball valve: First, observe the position of the handle. If the handle is in the horizontal direction, it is on. If the handle is in the vertical direction, it is off. Then look at the visual indicator, the color or arrow will clearly show the switch status. Then the handle position locks, locking the handle in a specific position to maintain the state. The position indicator indicates the switch status. Finally, the switch status is indicated by the valve body sign.
The switching state of the GB ball valve can usually be judged by observing the position of the valve handle or operating device. The following is the general method of judging the switching status of GB ball valve:
The position of the handle:
The ball valve usually has a handle, the position of the handle can judge the switching status of the valve. In a common situation, the direction of the handle is horizontal, which shows that the valve is open. While, if it is vertical, the valve is closed.
Some ball valve handles may have visual indication signs. For example, there is a different color indicating part or arrow, to clearly show the valve switching status. Some ball valve handles are equipped with a locking device. The device can lock the handle in a specific position to ensure that the valve remains in the desired on-off state.
Besides, some ball valves are equipped with position indicators, using numbers or text to indicate the valve’s on-off status. Such as “on”, “off” or “0”, “1”.
Valve body logo:
Some ball valves indicate the valve body to open or close the valve, which may be text or an icon.
No matter which method is used, care should be taken when judging the status of the ball valve switch. Then ensure that the valve operation method is accurately understood. When operating valves, especially when dealing with hazardous substances or high-pressure media, be sure to follow the appropriate safe operating procedures.
Configuration Parameter of EMT Pig Signaller With A Ball Valve
| Configuration parameter of Pig Signaller With A Ball Valve | |||
| ●standard configuration | ○Optional configuration | — No | |
| Trigger type(b-bidirectional /f-bidirectional feather /u-u-unidirectional) | ○/○/● | ||
| Flag trigger interagency interaction (no / Yes _ the flexibility of the trigger mechanism can be checked online) | —/● | —/● | —/— |
| Wetted part material(316L SS/DSS/INCONEL) | ●/○/○ | ||
| Flange/welding base material(PTFE Coated A105N/304SS/316LSS/DSS/INCONEL/According to customers’ needs) | ●/○/○/○/○/○ | ||
| Liquid level position in the machine (high _ requires heat tracing / low _ does not require heat tracing) | —/● | ||
| Output junction box(aluminum alloy /316ss) | —/— | ●/○ | ●/○ |
| Output switch (DPDT/SPDT) | —/— | ○/● | ○/● |
| Switching capacity (DC24V 3A/DC24V 5A) | —/— | ●/○ | ●/— |
| Output interface size (M20 × 1.5(F)/1/2″NPT(F)) | —/— | ●/○ | ●/— |
| Pressurized handling tools(2 full thread studs / synchronous special tools) | ●/○ | ||
| Insertion depth adjustment range (±10mm) | ● | ||
Parameters of the Pig Signaller
| Type: Intrusive |
| Connection type: Flange connection |
| Indicator feature: Manual reset flag combined with electrical signals (Manual reset flag and Date and time display combined with electrical signals can also be made) |
| Installing type: 2” Flange. As per ASME B16.5(CLASS150-2500) |
| Plug body length: 200mm/Meet the actual needs |
| Insert depth adjustment: 20mm |
| Operating temperature: -20~120℃/Meet customer requirements |
| NACE MR 0175: Yes |
| Ingress protection: IP66 |
| Explosion-proof class: Exd II BT4 |
| Remove under pressure: No |
| Trigger type: Bi-directional (Uni-directional trigger can also be made) |
| Internal part material: PTFE Coated A105N is standard configuration (304SS/316LSS/DSS/INCONEL/As per MR can meet customer needs) |
| Junction box material: Aluminium alloy/316SS |
| Switch type: DPDT/2*SPDT |
| Switch rating: DC24V 3A/DC24V 5A |
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