Containment Testing

VST Cut Sheets

Vapor Stimulator Tube installation components; kits available through authorized wholesale distributors

• VST Straight — Dispenser (DS-VST-STRT-Disp)
• VST Straight — STP (DS-VST-STRT-STP)
• VST Spill Bucket (DS-VST-BKT)
• VST Flush Cover (DS-VST-FlushCover)

Approvals & Third-Party Evaluations

Regulatory documentation for the Dri-sump containment tightness test method

• NWGLDE Evaluation (National Work Group on Leak Detection Evaluations), 4-13-2022
• Ken Wilcox Associates (KWA) Final Evaluation Report, 12-19-2018
• U.S. EPA Acceptance, 3-17-2020

Comparison & Reference

• Testing Showdown — Hydrostatic vs. Dri-sump comparison
• Benefits of Dri-sump — field results from fuel retailers and fleet operators
• PEI Member Profile
• How It Works — test method overview
• "Seeing Through the Fog" video series (YouTube)