AESSEAL API Plan 52

Depressurised buffer fluid circulation in outboard seal of a dual seal configuration through a seal support system. Circulation is maintained by using pumping ring in running condition and by thermosyphon effect in stand still condition

Description

Features

1. No process contamination.

2. No direct process leakage to atmosphere.

3. No need to maintain pressure system as in Plan 53A.

Use

1. For media where product dilution is not allowed but leakage to atmosphere in diluted form may be allowed.

2. Preferred for clean, non-polymerizing media with vapour pressure higher than buffer fluid pressure

(Is also used for lower vapour pressure media).