![EUROPE - LPCB Type 1 Single Interlock Surefire Preaction System With Electric/Pneumatic Release System | Viking Group Inc. EUROPE - LPCB Type 1 Single Interlock Surefire Preaction System With Electric/Pneumatic Release System | Viking Group Inc.](https://www.vikinggroupinc.com/sites/default/files/databook/preaction/DIEP.jpg)
EUROPE - LPCB Type 1 Single Interlock Surefire Preaction System With Electric/Pneumatic Release System | Viking Group Inc.
Mechanical construction - 1. Pre-action fire sprinklers are a dry sprinkler system, water is not contained in the pipes but is held back by a pre-action valve. Pre-action valves are electrically operated
![DV-5A Double Interlock Preaction System, Type A - Preaction Systems - Deluge & Preaction Systems - System Valves & Devices - Products | JCI Webshop DV-5A Double Interlock Preaction System, Type A - Preaction Systems - Deluge & Preaction Systems - System Valves & Devices - Products | JCI Webshop](https://orders.tyco-fire.com/media/products/DI_Electric_Pneu_GxG_4inch_1Bolt-161.jpg)