Single Interlocked Preprimed Preaction System

Viking valve and system offerings provide customers with industry-leading quality that lasts — making the choice to select a Viking valve and system product, such as a Single Interlocked Preprimed Preaction System, easier than ever!! 

Single Interlocked Pre-Primed Preaction systems are commonly used where the sprinkler system piping and/or sprinkler may be subject to damage or systems. The most common applications are in system applications where it is important to control accidental water discharge due to damaged sprinklers or piping.

Viking supervised, single interlocked preaction pre-primed systems utilize a Viking Deluge Valve and a hydraulically pressurized automatic sprinkler system. The system piping is hydraulically pressurized with an approved fire suppression solution for supervisory purposes and pre-prime requirements of NFPA. If acceptable by the authority having jurisdiction, this feature allows the system to be applied as a wet system and serve to prevent undetected leaks. If the system piping or a sprinkler is damaged, supervisory pressure is reduced and a supervisory alarm is activated.

Electrically controlled preaction systems require an electric Solenoid Valve controlled by an approved System Control Panel with compatible detection system that meets the application. The detection system must actuate prior to or at the same time as sprinklers.

In fire conditions, when the detection system operates, System Control Panel energizes Solenoid valve open, causing Deluge Valve to open. The riser piping fills with water, pressurizing already existing solution. If any sprinklers have opened, water or solution will flow from the system. If sprinklers have not opened, pressurized water will be in the sprinkler system piping when the sprinkler operates. A sprinkler head must open before solution flows from the system.

Tried out the innovative Valve & System Configurator(opens in a new window) yet? Build out a complete system riser by stepping through the options you need to complete your system, and get a list of materials ready to submit to your local Viking SupplyNet for quoting. You can even link right to SupplyNet.com from the parts list where we make it easy to get what you need when you need it. Check it out!