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Products
API Plan 13
API Plan 13
Recirculation from the seal chamber through a flow control orifice and back to the pump suction or pump suction piping.
A Flow control orifice
Seal chamber details
1 To pump suction
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
Features
- Plan 13 is self-venting.
- Relieves pressure in the seal chamber.
- A distributed flush is not recommended for this plan.
- Plan 13 can be used in combination with Plan 11 (Plan 14).
Application
- Standard flush plan for vertical pumps without a bleed bush below the seal chamber.
- Also used for high head horizontal pumps where Plan 11 cannot be used.
Remarks, checkpoints
- Orifice size should be at least 3 mm (1/8").
- The flow of the flush fluid must be sufficient to remove the heat from the mechanical seal chamber. Calculate the orifice size and the throat bushing clearance carefully to ensure the desired flush flow-rate.
- Do not use in case the difference between seal chamber pressure and suction pressure is very low. Use Plan 11 instead.
- A high-point vent must be provided in the vertical pump seal chamber (or seal gland) to ensure that seal faces never see vapors.
Pump media characteristics
- Clean, non-polymerizing fluids with moderate temperatures.
- Light hydrocarbons
Location, function
- Process side
- Lubrication, cooling
Configurations
1CW-FL, 1CW-FX, 2CW-CW, 2CW-CS, 3CW-FB
3CW-BB*, 3CW-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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The Eagleburgmann Group
Sealing technology for plants and machines
EagleBurgmann is one of the worldwide leading providers of industrial sealing technology. Mechanical seals, seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints, gaskets and packings as well as comprehensive services are used wherever reliability and safety are needed.
Mechanical seals and more
Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Close to 5,800 employees provide their ideas, solutions, and commitment so that customers can rely on our sealing technology.
What makes us stand out is our excellent quality, great innovative capacity, and an extensive product portfolio for nearly all industrial processes and fields of application. Our product portfolio includes everything from mechanical seals and seal supply systems to magnetic couplings, carbon floating ring seals, expansion joints, and gaskets and packings as well as comprehensive services. Since we are part of the German Freudenberg and Japanese EKK group, we have all the necessary resources for a firmly based reliable partnership.