2702 HOYT AVE 2018-01-02 MF Import

March 2, 2007 0 1�, t1w -Oda Dry 101a DRY PIPE SPRINKLER SYSTEM The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 Telephone: 269.945.9501 Technical Services: 877.384-5464 Fax: 269-818-1680 Email techsvcs@vikingcorp.com 1. DESCRIPTION A Dry Pipe Sprinkler System is a fire -protection system which utilizes water as an extinguishing agent The system piping from the Dry Pipe Valve to the fusible sprinklers is filled with pressurized au or nitrogen. An air check system is a small dry system that is di- rectly connected to a wet pipe system. The air check system uses a dry valve and an air supply, but does not have a separate alarm The alarm is provided by the main alarm valve 2. APPLICATIONS A Dry Pipe System is primarily used to protect unheated structures or areas where the system is subject to freezing Under such circumstances, it may be installed in any structure to automatically protect the structure contents and/or personnel from loss due to fire The structure must be substantial enough to support the system piping when filled with water. One system may protect as much as 52,000 sq. ft (4830.8 1 in a single fire area. The system should be designed by qualified fire protection engineers in conjunc- tion with insuring bodies. COMPONENTS OF THE SYSTEM NOTE ALTHOUGH ALL DRY PIPE SYSTEMS FUNCTION IN THE SAME MANNER, THE COMPONENTS AND ARRANGE- MENTS MAY VARY DUE TO THE APPLICATION OF DIFFERENT SETS OF STANDARDS THE STANDARDS MOST COMMONLY ENCOUNTEREDARE. • NFPA -'INSTALLATION OF SPRINKLERS - NFPA 13' • FM ."LOSS PREVENTION DATA" • LPC -'RULES FOR AUTOMATIC SPRINKLER INSTALLATIONS" • IN ADDITION, THERE ARE NUMEROUS LOCAL INTERPRETATIONS AND REQUIREMENTS THE SYSTEMS ILLUSTRATED HERE ARE OF A GENERAL NATURE A. WATER SUPPLY An adequate water supply taken from a city main, an elevated storage tank, a ground storage reservoir and fire pump, or a fire pump taking suction from a well and pressure lank is required. B. UNDERGROUND SYSTEM 1. Piping - cast iron, ductile iron or cement asbestos 2. Control Valves - Post Indicator Valves (PIV). 3. Valve Pit - Usually required when multiple sprinkler systems are serviced from a common underground system taking sup- ply from a city main. Two OS & Y valves, check valves or detector check, fire department connection (hose connection and check valve with bail drip). Check local codes for equipment and building requirements A back -flow preventer, full -flow meter, or combinations of equipment may be locally required 4 Auxiliary Equipment - Fire hydrants with two 2-112" (63 5 mm) outlets (for hose line use), two 2.1/2' (63.5 mm outlets and one 4" It 01.6 mm) outlet (far connection to a fire department pump truck), hose and equipment houses. Check with the fire department servicing the location for hydrant and hose -thread requirements. C. INSIDE SYSTEM 1 A check valve must be incorporated if not already provided in the underground system 2 Control Valve - Wall PIV or OS&Y must be incorporated if a control valve is not already provided in the underground piping for each system 3 Dry Pipe Valve with the following. a. The Dry Pipe Valve and pipe to the underground system must be protectec' from freezing An enclosure should be provided with an automatic heat source, lighting, and sprinkler protection b Compressed air supply (automatic or manual) capable of restoring normal air pressure to a system in 30 minutes or less A Viking Air Pressure Maintenance Device may be desired unless the compressor operates within an 8 psi (0.5624 kg1cm2) to 10 psi (0 703 kglcm2) differential. c An accelerator is required when system capacity exceeds 500 (1892.5liters) gallons If A water motor alarm or electric pressure switch. e. Valve trim and pressure gauges. 4 Fire Department Connection - Hose connection and check valve with a ball drip, if it is not provided in the underground system 5. System Piping -A system of piping progressively increasing in sae in proportion to the number of sprinklers from the most remote sprinkler to the source of supply. The pipe size and distribution is determined from pipe schedules or hydraulic calculations as outlined by the appropriate standard for the hazard being protected Form No F_011889 Revised page replaces page101-105 dated December 12. 1989. (Revised format and renumbered page II 3