Dry Pipe Systems are frequently installed in areas subject to freezing temperatures, such as unheated storage areas and loading docks. System operation is similar to Wet Pipe Systems, except that the system piping is charged with compressed air or nitrogen instead of water. The entire system is designed to permit quick, easy maintenance and constructed so it rarely needs any. All system components are fast-acting, rugged, and durable enough to provide long years of dependable operation.