API PLAN 32

In Piping Plan 32, flush is injected into the seal chamber from an external source.

Piping Plan 32 is used in services containing solids or contaminants, in which a suitable cleaner or cooler external flush will improve the seal environment. It is also used to reduce flashing or air intrusion (in vacuum services) across the seal faces by providing a flush that has a lower vapor pressure or that will raise the seal chamber pressure to an acceptable level.

This plan is almost always used in conjunction with a close-clearance throat bushing. The bushing can function as a throttling device to maintain an elevated pressure in the stuffing box or as a barrier to isolate the pumped product from the seal chamber.

Plan 32 Reduces air intrusions across seal faces by providing a positive flush.

• Temp Indicator and Thermowell
• Flow indicator Transmitter
• Pressure Transmitter

• Strainer – ( SS / CS ) Shell and SS316 Mesh
• 100% Radiography Test
• 100% Liquid Penetrant Test

• Sight Flow Indicator
• Flanged Connections (ASME B 16.5)