- Tyco-Fire
- Products and Solutions
- Valves, Devices, and Components
- Accelerators
- ACC-1 Dry Pipe Accelerator
ACC-1 Dry Pipe Accelerator
Mechanical accelerator
This quick-opening dry pipe accelerator reduces the time for valve operation when a sprinkler is activated.
- UL and C-UL Listed, FM and LPCB Approved
- Designed for use with Model DPV-1 dry pipe valves — 2-½-, 3-, 4- or 6-inch sizes
- Speeds operation of the dry pipe valve upon loss of air pressure
For Use With DPV-1 Valves
The Tyco® Model ACC-1 dry pipe accelerator attaches to the Tyco® Model DPV-1 dry pipe valve to allow faster valve operation. It automatically adjusts to both small and slow changes in system pressure, but it trips when there is a rapid and steady drop in pressure (like during a sprinkler operation).
Upon tripping, the accelerator transmits system air pressure to the intermediate chamber of the Model DPV-1 dry pipe valve. This neutralizes the differential pressure holding the Model DPV-1 dry pipe valve closed and permits it to open.
The ACC-1 has a unique, positive action; an internal anti-flood device; and a ball float that combine to prevent water and water-borne debris from entering the more sensitive operating areas of the accelerator.
![For Use With DPV-1 Valves](https://tyco.widen.net/content/iwqsj7fm40/jpeg/bts_imageleftcontentright_acc-1_dry_pipe_accelerator_iStock-1210182330.jpeg?position=c&color=ffffffff&quality=80&u=ncoxvb)
Features
- Designed to trip when system air pressure drops at a rate exceeding approximately 1 psi/minute (0.07 bar/min)
- Upon tripping, it transmits system air pressure to the intermediate chamber of the dry pipe valve, which neutralizes the differential pressure holding the valve closed and opens the waterway clapper
- UL and C-UL Listed, FM and LPCB Approved
- Maximum water supply pressure: 250 psi (17,2 bar)
- Maximum system air (or nitrogen) pressure of 70 psi (4,8 bar)
Benefits
![Reduce False Trips](https://tyco.widen.net/content/djrjhrg1io/jpeg/bts_icon_benefit_icons_reduce_false_trips.jpeg?position=c&color=ffffffff&quality=80&u=ncoxvb)
Reduce False Trips
Active air pressure monitoring adjusts to small and slow changes in pressure system, but trips when there is a steady pressure drop.
![Quick Opening](https://tyco.widen.net/content/lp3n1g8rgt/jpeg/bts_icon_benefit_icons_quick_opening.jpeg?position=c&color=ffffffff&quality=80&u=ncoxvb)
Quick Opening
This dry pipe accelerator reduces the time for valve operation when your automatic sprinklers are activated.
![Trusted Performance](https://tyco.widen.net/content/7yqvbb4gek/jpeg/bts_icon_benefit_icon_trusted_performance.jpeg?position=c&color=ffffffff&quality=80&u=ncoxvb)
Trusted Performance
Tyco® products have helped to protect spaces for more than 130 years.
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