The Vapor Connect Kit centres on the ST-46, a self-proving controller that verifies vapour coupler connection between terminal and tank truck before a loading permit is authorised. The system can operate independently or alongside existing Scully overfill and grounding controllers.
The Wilmington, Massachusetts-based company says the kit addresses a longstanding gap in environmental protection at loading lanes. Unlike grounding and overfill protection, vapour hose connection has historically relied on driver compliance alone in many regions. When a hose is not properly connected, vapours generated during fuel loading escape to the atmosphere rather than flowing to the terminal’s vapour recovery system.
The kit uses an integrated sensor and wiring internal to the coupler and hose, with a proprietary signal that cannot be shorted to simulate a proper connection, preventing workarounds. It is compatible with standard four-inch vapour adaptors per API RP1004 specification and requires no modifications to the truck.
Scully says the system also incorporates a high-flow pressure drop vapour coupler to reduce back pressure in truck compartments, lowering the potential for atmospheric vapour release. An electrical output to a terminal automation system or batch controller can optionally be included in permit logic.
The launch marks the company’s 90th year in hazardous liquid transfer safety.
