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The basic system consists of an ANSUL AUTO MAN regulated release assembly which includes a regulated release mecha- nism and a wet chemical storage tank housed within a single enclosure. The tank valve is designed to allow the wet chemical agent to discharge onto the hazard area first. Then, immediately following the agent dis- charge. the valve will automatically allow the water to flow through the piping and out the system nozzles. Nozzle blow-off caps, detec- tors, cartridges. agent, fusible links. and pul- ley elbows are supplied in separate pack- ages in the quantities needed for the fire suppression system arrangement. Additional equipment includes remote manu- al pull station, mechanical and electrical gas valves. pressure switches. and electrical switches for automatic equipment and gas line shut-off. Accessories can be added such as warning lights. etc,. to installation where required. The water supply piping includes a lockable valve. Each tank is limited to a listed maximum number of nozzles. The tank includes an adaptor/tube assembly. The adaptor is chrome-plated steel with 1/4 in. NPT female low pressure gas inlet port and a 3/8 in. NPT female agent outlet port. The adaptor also contains a bursting disc seal which prevents the siphoning of agent up the pipe during extreme tempera- ture variations. Connected to the adaptor/tube assembly is the water flow valve. This valve is designed to allow the wet chemical agent to flow first and then the valve will automatically switch internally to allow the water to start flowing. thus increasing the foam blanket and providing additional cooling. Regulated Release Mechanism - The regu- lated release mechanism is a spring-loaded, mechanical/pneumatic type capable of pro- viding the expellant gas supply to the agent tank, It contains a factory installed regulator deadset at150 psi (10.3 bar) with an internal relief of approximately 190 psi (13.1 bar). It has automatic actuation capabilities by a fusible link detection system and remote manual actuation by a mechanical pull station. COMPONENT DESCRIPTION Wet Chemical Agent - The PRXTM extin- guishing agent is a specially-formulated, aqueous solution of inorganic salts designed for rapid flame knockdown and foam secure- ment of grease related fires. It is available in 5,0 gallon (18.9 L) plastic containers with instructions for wet chemical handling and usage. Agent Tank - The agent tank is installed in a stainless steel enclosure, The tank is deep drawn carbon steel finished in red enamel. Tanks are available in three (3) sizes: PIRANHA-7: 1.5 gallon (5.7 L) capacity PIRANHA-10: 2.25 gallon (8,5 L) capacity PIRANHA-13: 3,0 gallon (11 A L) capacity The tanks have a working pressure of 150 psi (10.3 bar). a test pressure of 450 psi (31.0 bar). and a minimum burst pressure of 900 psi (62.1 bar). The regulated release mechanism contains a release assembly. regulator, and expellant gas hose in a stainless steel enclosure with cover. The enclosure contains knock-outs for 1/2 in, conduit. The cover contains an open- ing for a visual status indicator. The regulated release assembly also con- tains an anti-siphon valve which is designed to prevent back-siphonage of possible conta- minated water into a potable water supply, It is compatible with mechanical gas shut-off devices; or, when equipped with a field or factory installed switch, it is compatible with electric gas line or appliance shut-off devices, Discharge Nozzles - Two types of discharge nozzles are tested and listed with the PIRANHA system for all applications. One type is used for all high proximity appli- ance and plenum protection and is stamped MAP," and the other type is used for all duct protection and low proximity appliance pro- tection and is stamped "DL." Each nozzle must have a metal or rubber blow-off cap to keep the nozzle tip orifice free of cooking grease build-up. Water Shutdown Device - The water shut- down device is an optional component which can be field installed in the Ansul AUTO MAN release. With the device installed. the water flow to the discharge nozzles will automati- cally shutdown approximately 10 minutes after system actuation. .. .. CODES AND STANDARDS The PIRANHA hybrid wet agent system and its components meet the following codes. standards and recommended practices: 1. Underwriters Laboratories, Inc. (UL): Standard 300 - Fire Testing of Fire Extinguishing Systems for Protection of Restaurant Cooking Areas. 2. Underwriters Laboratories. lnc, (UL): Standard 2092 - Pre-Engineered Wet Chemical Extinguishing Units. 3. Underwriters Laboratory of Canada (ULC): Standard ORD-C1254.6 - Pre-Engineered Wet Chemical Extinguishing System Units. 4. National Fire Protection Association (NFPA): Standard 17 A - Wet Chemical Extinguishing Systems. 5. National Fire Protection Association (NFPA): Standard 96 - Ventilation Control and Fire Protection of Commercial Cooking Operations. 6. American Society of Sanitary Engineers (ASSE): Standard 1001 - Cross Connection Protection Devices: Guidelines for Selection of the Proper Type of Backflow Preventor - Piped Applied Atmospheric Vacuum Breakers. 7. International Association of Plumbing and Mechanical Officials (IAPMO): Installation, Material and Property Standard PS 108-98 - Grease Fire Suppression Systems. .. ORDERING INFORMATION Order all system components through your local authorized Ansul Distributor.