The Reliable model B1 accelerator with integral Accelo-Check (anti-flooding device) is used to speed up the operation of both dry pipe valves (in dry-type automatic sprinkler systems) and deluge valves (in preaction sprinkler systems). Both of these systems utilize pressurized air or nitrogen in the piping, instead of water, to prevent freezing or to prevent the accidental release of water.

• Quickens the operation of dry pipe valves
• Can potentially increase the number of automatic sprinklers controlled by one-dry pipe valve
• Equalizes rapidly as dry system is being filled with air to required pressure
• Adjusts without operation for small fluctuations in system air pressure
• Dependable in operation, compact and lightweight construction
• Accelo-check prevents water and debris from entering critical areas, minimizing the need of removing cover plates, etc to reset or clean internal mechanisms
• Tested and approved for use with Reliable dry pipe and preaction systems

Standards/Certifications: UL listed, FM, LPC approved

Applications: For Reliable dry pipe and preaction systems

• Specification Sheet https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS11923_Spec.pdf