Quench system for supplying single mechanical seals in quench design or double mechanical seals in tandem arrangement (unpressurised).
Used for applications where leakage of the fluid handled to atmosphere must be collected or diluted. This ensures reliable functioning of the mechanical seal especially for leakage products that tend to stick, crystallise or freeze.
The quench liquid pressure is lower than the pressure in the pump's seal chamber. The quench liquid prevents a reaction between the leakage products and atmospheric oxygen. It serves as dry running protection.