Seal auxiliary systems for pumps provide, cool and maintain the barrier or buffer fluid for mechanical seals. A good seal but a poor auxiliary system can still fail prematurely, so this is an indispensable part.
The system creates a stable working environment for the seal: keeping the barrier fluid at the correct pressure and temperature, circulating to dissipate heat and monitoring the condition. The configurations are standardized into diagrams (piping plan) in API 682.
Reservoir or accumulator, air or water cooler, pressure and temperature gauges and sensors, level switches and alarm switches, piping and valves, and nitrogen gas source when needed. All are usually mounted on a single frame for easy transportation and installation.
The barrier fluid must be compatible with the medium, not precipitate or evaporate under working conditions and suitable for the ambient temperature. Water, glycol mixture and synthetic oil are common choices.
SNS-VN supports the design and supply of seal auxiliary systems according to API 682 suitable for your pump and medium. Please contact us for a quote.