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It all started with a whistle - otherwise known as the Scully Ventalarm® - which revolutionized the oil delivery business. With a whistling that could be heard from outside and stopped when a home heating tank was full, the Ventalarm® eliminated the necessity of someone being home when the delivery person came. It prevented spills, and maintained the competitive position of home heating oil versus gas and electrical utilities.

Invented in 1936 by Frank P. Scully I, an M.I.T. graduate and entrepreneur, the first Scully Ventalarms were manufactured in his garage in Cambridge Mass. Soon thereafter they were being manufactured in Scully's present manufacturing site in Wilmington, Mass. If your home is oil-heated, chances are that its oil tank is outfitted with Scully Signal Company's original product - the Ventalarm®. Over the next six decades, Scully has launched a whole series of fuel oil delivery products, including gauges, tightfill connectors, delivery nozzles, as well as engine speed, flow and overfill protection controls. Together these products improve petroleum delivery efficiency by controlling fills and eliminating spills.


Complete Signal Catalog

If you would like to view and print the complete Signal Catalog, you must first complete our Inquiry Form. If you are granted a password, please return to this page and click here to view the catalog.
Heating Oil Catalogs and Data Sheets

Data sheets can be viewed and printed in Adobe Acrobat Reader. 

Product descriptions:
Product descriptions on data sheets can be viewed and printed by anyone.

Specifications / ordering information:
On-line access to specifications / ordering information is limited to those persons who have a Scully-supplied password. If you do not have a password but would like one, please complete our Inquiry Form.

Click here for "Scul-Speak", a dictionary of prefixes, suffixes, abbreviations, system numbers, terms and trademarks used as identifiers for Scully Signal Products.

Description Approvals
60621 SP-BL Two-wire thermistor overfill prevention sensor FM/CSA
60635 SP-M
Thermistor sensor for storage tank and fixed applications* FM/CSA
60678 SP-FU Five-wire optic overfill prevention sensor FM/CSA
60715 SP-TO Two-wire Instant-On™ optic overfill prevention sensor FM/CSA
67039 WB 100G Water detector FM/CSA/
67296 SP-TO Two-wire Instant-On™ optic overfill prevention sensor CENELEC


SP-FU Five-wire optic overfill prevention sensor CENELEC
GA67295 SP-BL Two-wire thermistor overfill prevention sensor CENELEC
60674 SJ Truck-mounted overfill prevention system connector FM/CSA
67211   Scully T.I.M.™ (Truck Identification Module) for connection to the Vehicle Identification Prover® (V.I.P.®) system  
GA67293   Intellicheck®* overfill protection and retained product monitoring system FM/CSA/
60671   The Load-Anywhere® System:
a complete overfill prevention loading rack system*
60629 ST-15
Single point overfill prevention controller FM/CSA
67129 ST-15/D Single Compartment Overfill Prevention Control Monitor FM
60633 ST-15WX Multiple Point Liquid Level Detection System* FM/CSA
67036 ST-15LAB Single Point Liquid Level Detection System FM/CSA
60733 ST-47 Groundhog™ vehicle static grounding system FM/CSA
67206 SC-47CC Ground verification clamp and cable unit  
67252 ST-UTT Universal Truck Tester
(tank truck overfill prevention system diagnostics)
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