Pre Action System Information Center
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Background on Pre Action System
This video visually illustrates the step-by-step actuation of the Tyco Model DV-5A Josh Overholt, Senior Technical Training Specialist at The Viking Corporation, demonstrates how to reset Viking's VXD ... System reset procedure for the Viking Double Interlock A detailed animation of Viking's VXD Single-Interlock Electric This video will give you a simple explanation about a Wet, Dry, and In this video, Shawn Mahoney, P.E., Senior Technical Services Engineer at NFPA introduces
A detailed animation of Viking's Viking F-1 Double-Interlock Electric/Pneumatic
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Featured Video Reports & Highlights
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Pre-Action Fire Sprinkler System | How it Works | DGS
ITM Double Interlock Preaction System
Tyco® DV-5A Pre Action Actuation
Pre Action Sprinkler System
Deep Dive
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Last Updated: May 23, 2026
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