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API Plan 53C circulates a pressurized barrier fluid between the inboard and outboard seals. The source of pressurization is a piston accumulator. Plan 53C is preferred for applications where the seal chamber pressure may vary during pump operation. A sensing line is typically run from the seal chamb...

API Plan 54 is a custom engineered system that delivers a pressurized barrier fluid to the seal chamber. The barrier liquid is circulated to and from the seal chamber via a pump located on an external reservoir. This fluid is maintained at a pressure greater than that found in the seal chamber. A Pl...

API Plan 55 is a custom engineered system that delivers an unpressurized buffer fluid to the seal chamber. The buffer liquid is circulated to and from the seal chamber via a pump located on an external reservoir. A Plan 55 can contain filters, coolers, and other components that are selected accordin...

API Plan 72 supplies a buffer gas from an external source between the inboard and outboard seals. For reliable operation, gas seals require a constant supply of clean, dry gas, typically nitrogen. The seal support panel contains a coalescing filter to remove any moisture and particulate present in t...

< Back to Process Side Plans API Plan 11 recirculates flow from a high‐pressure section of the pump, typically the discharge piping, through a flow control orifice to the seal. Plan 11 is the default flush plan for most pumps. API Plan 11 Kit components shown solid and include some optional c...

API Plan 12 recirculates flow from a high‐pressure section of the pump, typically the discharge piping, through a flow control orifice to the seal. In order to remove particulate in the flush stream and prevent clogging, flow passes through a strainer placed prior to the flow control orifice. The ad...

API Plan 13 recirculates flow from the seal chamber to the suction side of the pump. This plan is common for vertical pumps. API Plan 13 Kit components shown solid and include some optional components. This plan: Removes heat and flushes particulate from the seal chamber Allows the...

API Plan 14 combines Plan 11 and Plan 13. Flow is recirculated from the pump discharge into the seal chamber and from the seal chamber to the pump suction. Fluid flow is increased since the seal chamber is continuously vented, leading to higher cooling capacity. API Plan 14 Kit components show...

The Swagelok ® Tubing System Training Program, Chemical and Refining The Swagelok ® Tubing System Training Program, Chemical and Refining is a globally standardized two-day workshop designed to address the small-bore tubing training needs for midstream and downstream applications. It covers tube ...

The Swagelok ® Tubing System Training Program, Hydrogen Applications One of the most formidable challenges in the development of safe, dependable, and leak-tight hydrogen fluid systems is the nature of hydrogen itself. Hydrogen is a small-molecule gas that can easily escape through the tiniest ...