Ball valve QRS

electriccontrolfor water

The TYCO Model QRS Electronic Accelerator is a quick opening device intended to reduce the operating time of a dry pipe valve in a dry pipe system or an automatic control valve (deluge valve) in a double interlock electric/ electric preaction system. The control panel for the QRS may be used with up to four QRS switches for one to four system risers using one of the following dry pipe valves: • TYCO 4 in. & 6 in. (DN100/150) Model DPV-1 Dry Pipe Valves • Central 3 in. (DN80) Model AF or Central 4 in. & 6 in. (DN100/150) Model AF/AG Dry Pipe Valves • Gem 4 in. & 6 in. (DN100/150) Model F302/F3021 Dry Pipe Valves • Star 4 in. & 6 in. (DN100/150) Models A or A-1 Dry Pipe Valves The control panel for the QRS may be used with one QRS switch for one system riser using the following automatic control valve (deluge valve) used in a double interlock electric/electric preaction system: • TYCO 1-1/2 in. through 8 in. (DN40 through DN200) DV-5A Deluge Valve The Model QRS Electronic Accelerator (see Figure 1) utilizes a unique system air pressure monitoring device (UL and C-UL Listed, as well as FM Approved, Model QRS Extinguishing System Attachment) that continuously samples air pressure twice per second. When the air pressure is determined to have a sustained drop exceeding a rate of 0.1 psi (0,007 bar) per second as verified by three consecutive samplings, the QRS signals the Releasing Panel (Model PFC4410-RC) via its “Panel Input” initiating zone circuit, which energizes the Solenoid Valve.