EagleBurgmann international
EagleBurgmann WORLDWIDE
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Products
API Plan 32
API Plan 32
Injection of clean fluid into the seal chamber from an external source.
A From external source
B To seal
Seal chamber details
1 From external source
2 Flush (F)
3 Quench (Q)
4 Drain (D)
5 Seal chamber
Example seal: EagleBurgmann MBS682 single metal bellows mechanical seal.
P&ID according to API
Key
1 From external source
FI Flow indicator **
PI Pressure indicator
TI Temperature indicator **
** Optional
Features
- If maintained properly, the best flush plan for single seals or inboard seals in dual seal arrangements (provided media dilution is acceptable).
- Used in conjunction with a close clearance throat bush to maintain an elevated pressure in the seal chamber and to isolate it from pumped media.
Application
- Fluids with solids and contaminants where pumped fluid can accept an external flush.
- To reduce flashing or air intrusion (as in vacuum services).
- Can be used on horizontal as well as vertical pumps.
Remarks, checkpoints
- The external flush media should be compatible with the pumped media.
- Flush media should not vaporize on entering the seal chamber and should be always on – even during start-up and shut-down.
- Pressure of the external flush should always be at least 2 bar (29 PSI) above seal chamber pressure.
- Consider economic impact of product dilution, if any.
Pump media characteristics
- Suspended solids
- Poor lubrication
- High temperature
- Hazardous / environmentally harmful (only in combination with additional API plan).
Location, function
- Process side
- Flushing and cooling
Configurations
1CW-FL, 1CW-FX, 2CW-CW, 2CW-CS, 3CW-FB, 3CW-BB, 3CW-FF
3NC-FB*, 3NC-BB*, 3NC-FF*
* Remark: The configurations listed for each individual piping plan are to be understood as recommendations including possible utilizations which may also be applied.
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