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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...

< Back to Between Seal Plans API Plan 74 supplies a pressurized barrier gas from an external source between the inboard and outboard seals. For reliable operation, dual pressurized gas seals require a constant supply of clean, dry gas, typically nitrogen. The seal support panel contains a coalesci...

< Back to Between Seal Plans API Plan 75 collects leakage from the inboard seal in applications where normal process fluid leakage can condense between the seals at ambient temperatures. In this arrangement, a reservoir is connected to the containment seal drain port on the gland. Condensed leakag...

API Plan 76 collects leakage from the inboard seal in applications where normal process fluid leakage does not condense between the seals at ambient temperatures. In this piping plan, gaseous leakage from the inboard seal exits through the containment seal vent port in the gland. The orifice creates...

This panel is a combination of API Plan 72 and Plan 76. The Plan 72 side supplies a buffer gas from an external source between the inboard and outboard faces of a dual seal. For reliable operation, gas seals require a constant supply of clean, dry gas, typically nitrogen. The seal support panel cont...

< Back to Mechanical Seal Support Systems Seal Support System Process Side Plans Seal Plan Kits Most Swagelok-built process side plans for seal support are available as seal plan kits. Each kit containseverything needed for proper installation, including an engineered drawing, making it simple 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 41 is a cooled version of Plan 31. Solids are removed from the flush fluid by incorporating a cyclone separator. Flow is routed from the discharge side of the pump through the cyclone separator. Clean flush fluid leaving the separator is routed through a cooler before being returned to the ...

Better by Design: Swagelok Seal Support Systems Swagelok leverages deep fluid system expertise to design and construct simple-to-configure, easy-to-maintain,and safe-to-operate seal support systems. If you are tasked with keeping rotating equipmentonline and operating efficiently, you will find tha...