Dynacheck®

How Scully Overfill Prevention Systems Check Themselves

Transferring hazardous liquids is a dangerous business. At Scully, we know that when you are relying on a secondary emergency shutdown system, you are counting on a last line of defense to save you from a catastrophe. There is no room for error. That’s why Scully designs Dynacheck® circuitry into every Scully overfill prevention system.

All system components including sensors, wiring, connections, and even the internal electronics circuitry are monitored 30 times per second. The system automatically and continuously tests for wet sensors, system faults, and lack of grounding. No manual testing is required. Should a wet sensor or fault be detected, the system instantly alerts you and shuts off product flow.

Scully designed and patented the original dynamic fail-safe circuitry called Dynacheck®. This technology was considered to be so advanced and safe, that it was licensed for specialized flame safeguard and nuclear radiation detection controls and used in refineries and laboratories. Today, all of our systems continue to check their own operation and our passion for safety and reliability continues to be at the core of everything that we do. We will never settle for “safe enough,” and … neither do our customers. Put your trust in the products that check themselves and the company that sets new standards in safety.

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Upcoming Events and Tradeshows

We will be attending these tradeshows and events in the next few months, and would love to hear from you and see you. If you would like to see firsthand demonstrations or connect with a Scully representative at any of these events please contact us!

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Posted in Scully Signal, overfill prevention, tradeshows, Demonstrations, fuel delivery equipment,

The Scully family announces the passing of Mr. Robert G. Scully


It is with deep sadness that we inform you that our Chairman of the Board, Robert G. Scully, passed away on Monday, February 20, 2017 at the age of 91.  Son of our founder, Francis P. Scully, he joined Scully Signal Company as a regional salesperson and became the President in 1964.  Following in his father’s footsteps, he led the charge to revolutionize the petroleum industry through

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Posted in Robert Scully,

Scully Signal