Viking model j1 alarm check valve rubber replacement kit repair. The bypass check valve reduces the possibility of false alarms by permitting slow as well as small transient increases in water supply pressure to be passed through. The series 7800 check valve assembly is lighter and faster to install, and costs less than flanged and wafer valve assemblies. Excess pressure pump trim option available upon request. The retarding chamber is part of ul listed and fm approved alarm valve trim. Because of fire sprinkler or test valve activation, the indicator detects water flow and. To actuate a deluge valve electrically, a solenoid valve is provided to drain the water from the top chamber of the deluge valve. A pressure switch is provided to activate an electric alarm, to shut down the desired equipment or to give tripped indication to the panel.
Floor control valve assemblies required check valve though alarm check valve assembly is proposed at riser per nfpa, i didnt find any technical reason to have check valve where there is no combined system wet sprinkler and standpipe is proposed. Cvf 300 resilient seat check valve is a rubber faced, flanged swing type check valve that allows water flow in one direction only. To test the mechanical sprinkler alarm and the alarm valve, open the 1 inc 25mm inspectors testh connection. Apr 02, 2017 floor control valve assemblies required check valve though alarm check valve assembly is proposed at riser per nfpa, i didnt find any technical reason to have check valve where there is no combined system wet sprinkler and standpipe is proposed. In the fully open position the series 7800 swing clapper is held tightly against the valve body. Symbols eugene school district 200 north monroe st.
In addition to this two nos of pressure switches can be used to. Reinstall the cover and tighten the cover screws to 15 inlbs minimum to properly seal the enclosure. The deringer 3050 micro bypass assembly is a type ii bypass that utilizes an angled check valve and includes a standard 58 x 34 water meter for water use detection. Verticle offset from upstream to downstream side is. Includes upstream and downstream pressure taps, must specify riser check kit. It is the shortest, lightest and smallest bypass in the industry and the same bypass is used on all size deringer 3050 models. Where variable water supply pressures exist, the alarm check valve shall be installed with an approved hydraulic retarding device. Globe alarm check valves are designed and manufactured to the standards andor requirements of under writers laboratories inc. Home fire fighting solutions alarm check valve assembly retard chamber. Meanwhile, in the event of variable pressure condition, false alarm is prevented with provision. The model j1 alarm check valve may be installed in the vertical position with direction of flow up, or in the horizontal position with the access cover up. Butterfly valve grooved with tamper switch strainer. Instructions for installation, operation, care and maintenance.
They are assembled on fire pipeline to separates the fire area into small distribution zone for indication and control. In this video from the know more risk series, learn about the arrangement, operation and alarm testing of a wet sprinkler. The j1 alarm check valve trim allows installation of pressure switches to operate local electric alarms andor remote. The deringer 20 double check dc valve shall utilize two independent dual action check modules and two integral resiliently seated shutoff valves all of which shall be contained within a single rigid valve housing constructed entirely of 304 stainless steel. Double check valve assembly ddc or dcva this assembly consists of two internally loaded check valves, either spring or internally loaded, weighted, installed as a unit between two tightly closing resilientseated shutoff valves as an assembly, and fittings with properly located resilient seated test ports or cocks. Model av0 alarm check valves, consideration must be given to the dis posal of the large quantities. Select the check box to show alarm limits adjacent to the measured data in the patient data workspace. Features an elastomer encapsulated disc with an electroless nickel plated seat. Globe alarm check valve installation and maintenance guide page i table of contents april 2004 bulletin a. Close the alarm test valve and verify that water has ceased to flow from the alarm line drain.
It is a holding tank to prevent activation of the sprinkler alarm during water pressure surge, but permits the activation of alarm on sustained flow. Approved by fm approvals, and other fire insurance and gov ernmental agencies in the united states and foreign countries. The alarm check valve is a water flow alarm device designed for vertical installation in the main supply to a wet pipe sprinkler system, across the uae, dubai, the mena region and qatar. Bureau veritas maritime approval series 751 firelock and 752 retard chamber. Says if you have a single wet system the alarm valve can be the check valve required which would put it at the main riser.
Double check valve assemblyddc or dcva this assembly consists of two internally loaded check valves, either spring or internally loaded, weighted, installed as a unit between two tightly closing resilientseated shutoff valves as an assembly, and fittings with properly located resilient seated test. Instruction manual 3 section 2 unpacking check list instruction supplement lmi injection check valve instruction supplements optional milliamp input cable optional 4function valve pictured or optional 3function valve figure 2. Alarm valve is a double seated clapper check valve with grooved seat design, which ensures positive water flow for alarm operation and is designed for installation in wet pipe sprinkler system. Double check valve backflow prevention assembly for assemblies 34 thru 2 12 pdf. To check that the supply line allows the unobstructed supply of water. See clean check installation instructions and warranty information here detail drawings. Consequently, with the alarm check valve set for service, there is no flow through the alarm port to the alarm devices i. The main purpose of the alarm check valve is to ring a mechanical bell called a water motor gong.
Reliable wet system valves are designed to control sprinkler systems in areas that are temperature controlled to at least 40f 4c. The designer the sprinkler system, but provides additional reliability should consider the use of pressurereducing valves that since each floor or area will be served by multiple risers have been listed as a combination indicating control each capable of meeting the required hydraulic flow rates. Alarm check valve is core element in wet pipe fire sprinkler systems. In this demonstration we will be covering the repair of the rubber replacement of the viking model j1 alarm check valve. Reliable model e wet valve system datasheet fpc datacentre. It serves a dual purpose which prevents a reverse flow of water nonreturn, also provides for the use of the water motor gong. Retarding chamber is used with alarm valve trim when variable pressure is anticipated in the system. Alarm check valves shall be ul listed and fm approved. As the most common type of system, wet sprinkler systems have water available at the sprinkler, so when a fire occurs, and the sprinkler activates, water is discharged on the fire immediately. Alarm check valve shall be equipped with a water motoroperated mechanical alarm or pressure switch to initiate an electric alarm.
The upper part of the cylinder is retained in the backframe assembly by a cylinder retention system. Firelock alarm check valve series 751 installation poster. Alarm valve is a double seated clapper check valve with grooved. Bureau veritas maritime approval style 751 and style 752. The valve is designed to initiate an alarm during a sustained flow of water such as the flow required by an open sprinkler by operating an optional water motor alarm andor alarm. Measurements of clean check body 111611 clean check assembly. The valve is designed to initiate an alarm during a sustained flow of water such as the flow required by an open sprinkler by operating an optional water motor alarm andor alarm pressure switch. Water flows through ports in grooved seat, and enters the alarm port to activate alarm devices connected to the system. The alarm limit always shows when an alarm occurs for the measured data, even if it is set to off.
Victaulic series 751 firelock alarm check valve alarm. Once the test is complete, close the drain valve and open the alarm control valve. The deringer 30 double check detector assembly dcdaii shall utilize two independent dual action check modules and two integral resiliently seated shutoff valves all of which shall be contained within a single rigid valve housing constructed entirely of 304 stainless steel. The viking model j1 alarm check valve serves as a check valve by trapping pressurized water above the clapper and preventing reverse flow from sprinkler piping. Standard detail drawings 2300 series city of scottsdale. Assembly of model e3 trim variable pressure vertical installation figure 2 the following description is the recommended sequence for installing the trim as illustrated in this bulletin.
Description alarm valve is a double seated clapper check valve with grooved seat design, which ensures positive water flow for alarm operation and is designed for installation in wet pipe sprinkler system. Model av0 alarm check valve, 300 psi 20,7 bar 212, 4. Wet alarm valve assembly for fire sprinkler system. In this video from the know more risk series, learn about the arrangement, operation and alarm testing of a wet sprinkler system that uses an alarm check valve and water.
Nfpa 72 manifold assembly length manifold models 25. The alarm control valve must be supervised and secured according to the respective regulations. Meanwhile, in the event of variable pressure condition, false alarm is prevented with provision of retard chamber at the external bypass. Double check valve backflow prevention assembly for assemblies 3 thru 10 pdf.
A hinged clapper remains open with water flowing in one direction, and automatically closes when flow stops preventing backflow. The smallest, lightest, most economical, best performing, and only all stainless steel backflow preventer. Globe alarm check valve installation and maintenance guide table of contents june 2016 page i bulletin a. Instructions for 4 6 installation, operation, 200mm care. Cvf300 resilient seat swing check valve flanged rapidrop. A swing check valve can act as an alarm check valve for a wetpipe fire sprinkler system, but only when that valve can sound an alarm. Contains check valve warranty 3 years approximate weight style weight zcr20 31 lbs. The mechanical sprinkler alarm may be tested without disturbing the alarm valve by opening the alarm test valve located in the piping line connecting it to the alarm valve inlet side.
Both integral shutoff valves shall include prewired supervisory tamper switches contained within a weatherproof. Jun 26, 2018 in this demonstration we will be covering the repair of the rubber replacement of the viking model j1 alarm check valve. Once the pressures stabilize, the alarm check valve is in service and the centrally located groove in the seat ring is sealed. The valve should, if properly maintained, help hold the system pressure steady and reduce the possibility of false alarms.
Deluge valve working principle instrumentationtools. As the most common type of system, wet sprinkler systems have water available at the sprinkler, so when a fire occurs, and the sprinkler activates, water. Victaulic series 717r firelock riser check valve check. Inspect the check valve clapper located on the bypass line. After the alarm check valve has been installed in the riser, attach segment a in. Flow switch tester assembly shall mount on any clear. The reliable model e and model e3 alarm check valve acts as a water flow alarm device in wet pipe sprinkler systems.
They are intended to be used as a guide in the preparation and submittal of plans for private development and city contract projects within the city of raleigh and the citys extraterritorial jurisdiction. Verify that the appropriate trim chart and technical data for the alarm check valve and associated equipment are available. Both integral shutoff valves shall include prewired supervisory tamper switches contained within a weatherproof actuator housing. The model 353 alarm valve is the type of alarm check valve which has a. Once the alarm check valves are activated, they will allow water to flow through the system, engaging the sprinkler system as and where needed in order to suppress a potential fire. During a sustained flow of water, such as the flow required by an open sprinkler, hinged clapper 9 moves off seat to the open po sition. Because of fire sprinkler or test valve activation, the indicator detects water flow and transmits signal to control system. Model av0 alarm check valve 300 psi 20,7 bar 212 to 8 dn65 to dn200 vertical or horizontal installation translated versions pdf.
An alarm check valve can be activated or opened in one of two basic ways. The series 751 alarm check valve is designed to allow the installation of pressure switches to activate electric alarms and control panels when a sustained flow of water such as an open sprinkler causes the alarm checks clapper to lift from its seat. Select to set auto alarm limits based on current measured data for. The gruvlok series 7800 check valve is a compact, cost effective valve offering low pressuredrop, nonslam performance. The av0 alarm check valve trim includes pressure gauges to monitor system pressure conditions, a bypass check valve, a main drain valve, and an alarm test valve. An alarm check valve is basically a check valve with an alarm port. The 3 deringer 20 double check prevents nonhealth hazard pollutants from entering a potable water supply system when backpressure andor backsiphonage conditions occur.
Clean the 20 nb 34 strainer provided on the sprinkler alarm bell line. Globe fire sprinkler corporation alarm check valves are used in wet pipe fire sprinkler systems. Prevents the reverse flow of water from the system piping to the water supply. Includes upstream and downstream pressure taps, must specify riser check kit when ordered. City of scottsdale standard detail drawings 2300 series. Viking model j1 alarm check valve rubber replacement kit. Thread elbows 2 25mm british standard thread elbows valves included red.
The bypass line allows pressure surges to enter the system without causing false alarms. External bypass prevents false alarm under all supply pressure condition. Series 751 firelock alarm check valve trim for use with excess pressure pump. The backframe assembly uses a unique snapchange mechanism to engage the cylinder valve assembly to the pressure reducer. New heavy duty flapper that withstands pressure of 75 psi at 100 ft. Victaulic series 751 firelock alarm check valve alarm devices.
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