Purge Reduction Seal (PRS)
Optimized Flare Purging with Engineered Purge Reduction Seals
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Overview
CRA’s Purge Reduction Seals are engineered to prevent atmospheric air infiltration into flare stacks during low or no process flow conditions. Installed at or below the flare tip, these devices reduce the purge gas velocity required to maintain safe oxygen concentrations inside the flare. Available in velocity and molecular seal configurations, CRA solutions improve flare safety, reduce operating costs, and extend flare tip life while maintaining compliance with industry standards.
Key Benefits
Lowers continuous purge gas demand while maintaining safe oxygen levels in the flare stack.
Minimizes air ingress and reduces the formation of flammable gas–air mixtures.
Significant long-term savings through reduced purge gas usage.
Reliable operation without active controls or maintenance-intensive components.
Reduces internal burning and burn-back, improving flare tip service life.
The CRA Edge
Deep experience in flare safety, combustion, and ancillary systems.
Velocity or molecular seals selected based on flare size and duty.
Designed in alignment with API 521 and accepted industry practices.
Compatible with CRA and third-party flare systems.
