3003 W CASINO RD BLDG 40-36 2025-03-25

Page 4 of 7 TECHNICAL DATA ALARM CHECK VALVE NlKjw4j, R; MODEL J-1 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 Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com 8. OPEN the Alarm Shut -Off Valve in the Alarm Valve trim, and verify that all other valves are in their normal operating position. 9. Secure all valves in their normal operating position. 10. Notify the Authority Having Jurisdiction, remote station alarm monitors, and those in the affected area that the system is in service. 5. OPERATION (Refer to Figures 1 & 3) The Model J-1 Alarm Check Valve is manufactured with a hinged clapper (9) equipped with a torsion spring (6) to assure proper opera- tion when the valve is installed in the horizontal position. Minor flows, resulting from small surges, travel around the clapper through external by-pass trim to minimize false alarms. Rubber gasket (10) forms a tight seal against brass water seat (13). This seal, and the check valve installed in the external by-pass trim, serve to trap higher pressurized water in the sprinkler piping and prevent reverse flow. During a sustained flow of water, such as the flow required by an open sprinkler, hinged clapper (9) moves off seat (13) to the open po- sition. Water flows through ports in grooved seat (13), and enters the alarm port to activate alarm devices connected to the system. Operation with Retard Chamber: When the optional retarding chamber is used, water entering the grooved seat alarm port is directed into the retarding chamber. Tem- porary pressure surges or fluctuations, large enough to move the valve clapper, are automatically drained through the restricted drain. During a sustained flow of water, such as the flow required by an open sprinkler, the clapper will be held off its seat. The retarding chamber will fill faster than water can drain through the restricted drain of the alarm valve trim. Alarm devices will be pressurized. Refer to technical data describing the Viking Retarding Chamber and alarm devices. 6. INSPECTIONS, TESTS AND MAINTENANCE The owner is responsible for maintaining the fire protection system and devices in proper operating condition. For minimum maintenance and inspection requirements, refer to recognized standards such as those produced by NFPA, LPC, and VdS which describe care and maintenance of sprinkler systems. In addition, the Authority Having Jurisdiction (AHJ) may have additional maintenance, testing and inspection requirements which must be followed. Any system maintenance or testing that involves placing a control valve or detection system out of service may eliminate the fire protection of that system. Prior to proceeding, notify all Authorities Having Jurisdiction. Consideration should be given to employment of a fire patrol in the affected area. It is imperative that the system be inspected and tested on a regular basis. The frequency of the inspections may vary due to contami- nated water supplies, corrosive water supplies, and corrosive atmospheres. For minimum maintenance and inspection requirements, referto NFPA25. In addition, the Authority Having Jurisdiction may have additional maintenance, testing, and inspection requirements that must be followed. INSPECTION Monthly visual external inspection of Alarm Check Valves is recommended. 1. Verify that pressure gauges indicate normal water supply pressures. It is normal for the gauge on the system side of the clapper to register a higher pressure than the gauge on the supply side of the clapper because pressure surges are trapped above the clapper. 2. Check for signs of mechanical damage and/or corrosive activity. If detected, perform maintenance as required or, if necessary, replace the device. 3. Verify that valve and trim are adequately heated and protected from freezing and physical damage. 4. When equipped with variable pressure trim, verify that there is no unwanted leakage from the restricted drain of the retard cham- ber. It is normal for drainage to occur during pressure surges that exceed the capacity allowed through the by-pass trim. 5. Verify that the water supply main control valve is open, and that all valves are in their normal operating position and appropriately secured. QUARTERLY TESTS Water Flow Alarm Test Quarterly testing of water flow alarms is recommended and may be required by the Authority Having Jurisdiction and NFPA 25. 1. Notify the Authority Having Jurisdiction, remote station alarm monitors, and those in the area affected by the test. NOTE: AN ALARM SHUT-OFF VALVE IS PROVIDED TO SILENCE LOCAL ALARMS. NO SHUT-OFF VALVE IS PROVIDED FOR THE PRESSURE SWITCH CONNECTION INTENDED TO ACTIVATE ELECTRIC ALARM PANELS. (REFER TO J-1 ALARM CHECK VALVE TRIM CHART.) Form No. F_062293 18.10.18 Rev 18.1.P65