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DV-5 Deluge Valve |
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| Engineer | Дата: 01.10.2017, в 19:17 | Сообщение №1 |
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   | Preaction System with DV-5 Deluge Valve Double Interlock - Electric/Pneumatic Actuation 1-1/2 thru 8 Inch (DN40 and DN200)
General Description
The DV-5 Double Interlock Preaction System with Electric/Pneumatic Actuation (Fig. 1) is designed for use in applications, such as refrigerated areas, requiring the maximum degree of protection against inadvertent flooding of the sprinkler system piping.
The DV-5 Double Interlock Preaction System with Electric/Pneumatic Actuation utilizes a DV-5 Deluge Valve and a Riser Check Valve. The Riser Check Valve (that does not require the use of priming water) isolates the Deluge Valve from the system air pressure. The re- leasing trim for the Deluge Valve utilizes a Solenoid Valve and a Dry Pilot Actuator in a series configuration. The system air pressure holds the Dry Plot Actuator closed, whereas the Solenoid Valve remains closed until it is electrically energized by a Deluge Valve Re- leasing Panel (automatic control unit). The Releasing Panel is operated by either a fire detection device or manual electric pull station. |
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| Engineer | Дата: 01.10.2017, в 19:17 | Сообщение №2 |
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| In order for the Double Interlock Preaction System to automatically actuate, two independent events must occur. The Deluge Valve Releasing Panel must operate and open the Solenoid Valve upon automatic operation of the electric fire detection initiating circuit or manual operation of the electric-manual pull initiating circuit, and the sprinkler system piping must lose air pressure due to operation of one or more sprinklers.
The Double Interlock Preaction System will automatically actuate only when both the Dry Pilot Actuator and the Solenoid Valve are open at the same time. Accidental opening of just the Dry Pilot Actuator (e.g., a lift truck accidentally dislodges a sprinkler), or just energizing the Solenoid Valve (e.g., an accidental operation of an electric pull station), will only cause an alarm, and will not actuate the system or flood the sprinkler system piping. |
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| Engineer | Дата: 01.10.2017, в 19:19 | Сообщение №3 |
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| As water flows into the system, the Model FSV-1 Fail-Safe Valve, also described in Technical Data Sheet becomes pressurized and upon operation constantly vents the DV-5 Diaphragm Chamber so as to maintain the DV-5 Valve in the open (operated) position until the sys- tem is reset.
The DV-5 Double Interlock Preaction System with Electric/Pneumatic Actuation described herein must be in- stalled and maintained in compliance with this document, as well as with the applicable standards of the National Fire Protection Association, in addition to the standards of any other authorities having jurisdiction. Failure to do so may impair the performance of the related devices.
The owner is responsible for maintaining their fire protection system and devices in proper operating condition. Contact the installing contractor or manufacturer with any questions. |
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| Engineer | Дата: 01.10.2017, в 19:20 | Сообщение №4 |
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| | The DV-5 Deluge Valve (described in Technical Data Sheet TFP1305) is a diaphragm style valve that depends upon water pressure in the Diaphragm Chamber to hold the Diaphragm closed against the water supply pressure. When the DV-5 Valve is set for service, the Diaphragm Chamber is pressurized through the trim connections from the inlet side of the system’s main control valve, for example an O.S.&Y. gate valve or butterfly valve (Fig. 1). |
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| Engineer | Дата: 01.10.2017, в 19:21 | Сообщение №5 |
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| Technical Data
Approvals
UL and C-UL Listed FM Approved
Deluge Valve
DV-5
Riser Check Valve
Model CV-1FR
NOTE: 1-1/2 inch (DN40) risers utilize a 2 inch (DN50) Model CV-1FR Riser Check Valve connected to the 1-1/2 inch (DN40) DV-5 Deluge Valve by a 2 x 1-1/2 inch Figure 716 Reducing Coupling
Valve Trim
The Double Interlock Preaction System with Electric/Pneumatic Actuation Trim (Fig. 3A/3B) forms a part of the laboratory listings and approvals. The trim is necessary for proper operation of the DV-5 Valve. |
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| Engineer | Дата: 01.10.2017, в 19:23 | Сообщение №6 |
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| Each package of trim includes the following items:
Water Supply Pressure Gauge
Diaphragm Chamber Pressure Gauge
Diaphragm Chamber Connections
Manual Control Station
Main Drain Valve
System Drain Valve
Alarm Test Valve
Automatic Drain Valve
System Air Pressure Gauge
Air Supply Connections
Low Air Pressure Alarm Switch
Waterflow Pressure Alarm Switch
Dry Pilot Actuator
Pressure Operated Relief Valve
The following items are included in the Pre-Trimmed Valve Assembly and can be ordered separately for the valve trim:
Model BFV-N Butterfly Valve
Waterflow Pressure Alarm Switch
Figure 577 Grooved Coupling
To ease field assembly of the trim arrangement, the trim components are provided partially assembled as shown in Figure 3B. |
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| Engineer | Дата: 01.10.2017, в 19:25 | Сообщение №7 |
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| In order to readily perform the System Inspection Procedure described in the Care and Maintenance section, it is recommended that a System Shut- Off Valve be installed above the Riser Check Valve, as shown in Figure 1. The System Shut-Off Valve should be a listed or approved (as appropriate) indicating valve with a supervisory switch to monitor the normally open position.
Detection System
The Double Interlock Preaction System With Electric/Pneumatic Actuation Trim provides for electric operation of the DV-5 Valve by a detection system consisting of electrical devices such as heat sensitive thermostats, smoke detectors, and/or electric manual pull stations. Information on the various types of separately ordered Solenoid Valves that may be used with this trim package is given in Technical Data Sheet TFP2180. Nominal installation dimensions for the Double Interlock Preaction System With Electric/Pneumatic Actuation Trim are shown in Figure 4.
The Deluge Valve Releasing Panel (automatic control unit) with battery back- up, fire detection devices, manual pull stations, and signaling devices that are utilized with the Double Interlock Pre- action System with Electric/Pneumatic Actuation must be UL Listed, ULC Listed, C-UL Listed, or FM Approved, as applicable.
Approval by Factory Mutual is contingent on the use of an FM Approved 24 VDC Solenoid Valve (P/N 52-287-1024 or P/N 52-287-1-124). FM only approves solenoid valves for use in non-hazardous locations.
Consult with the authority having jurisdiction regarding installation criteria pertaining to electric actuation circuitry.
After the ten minute duration, at which point should the Solenoid Valve become de- energized and closed (especially while operating under battery back-up), the Fail-Safe Valve will have already automatically operated to constantly vent the DV-5 Diaphragm Chamber, thereby preventing the DV-5 Diaphragm Chamber from becoming repressurized and preventing an inadvertent closing of the DV-5 during a fire event
System Air Pressure Requirements The required system air pressure for the Double Interlock Preaction System with Electric/Pneumatic Actuation is shown in Graph A as a function of the anticipated water supply pressure. It is recommended that the system air pressure be maintained by one of the following methods:
A maximum 200 psi (13,8 bar) plant air supply in combination with the Model AMD-1 Air Maintenance De- vice described in Technical Data Sheet TFP1221
A dedicated air compressor in combination with the Model AMD-2 Air Maintenance Device described in Technical Data Sheet TFP1231
A maximum 3000 psi (206,9 bar) nitrogen cylinder in combination with the Model AMD-3 Nitrogen Maintenance Device described in Technical Data Sheet TFP1241
The dew point of the air or nitrogen supply, for a system exposed to freezing conditions, must be maintained below the lowest ambient temperature to which the system piping will be exposed. Introduction of moisture into the system piping can create ice build up which could prevent proper operation of the system. |
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| Engineer | Дата: 01.10.2017, в 19:28 | Сообщение №8 |
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| The DV-5 Deluge Valve is to be in- stalled in accordance with the following criteria:
Step 1. All nipples, fittings, and de- vices must be clean and free of scale and burrs before installation. Use pipe thread sealant sparingly on male pipe threads only.
Step 2. The DV-5 Valve must be trimmed in accordance with Figure 3A/3B.
Step 3. Care must be taken to ensure that check valves, strainers, globe valves, etc. are installed with the flow arrows in the proper direction.
Step 4. Drain tubing to the drip funnel must be installed with smooth bends that will not restrict flow.
Step 5. The main drain and drip funnel drain may be interconnected provided a check valve is located at least 12 inches (300 mm) below the drip funnel.
Step 6. Suitable provision must be made for disposal of drain water. Drain- age water must be directed so that it will not cause accidental damage to property or danger to persons.
Step 7. Connect the Diaphragm Chamber Supply Control Valve to the inlet side of the system’s Main Control Valve in order to facilitate setting of the DV-5 Valve (Fig. 4).
Step 8. Unused pressure alarm switch connections must be plugged.
Step 9. A suitable automatic supervisory air (nitrogen) supply, as described in the Technical Data Section, is to be installed in accordance with the applicable Technical Data Sheet. Refer to Graph A for the system air pressure requirements.
An air dryer, when specified, is to be installed as required by the authority having jurisdiction.
Step 10. The Pressure Relief Valve (P6-Fig. 3A) is factory set to relieve at a pressure of approximately 45 psi (3,1 bar), which can typically be used for a maximum system pressure of 40 psi (2,8 bar). The Pressure Relief Valve may be reset; however, it must be reset to relieve at a pressure that is in accordance with the requirements of the authority having jurisdiction.
To reset the Pressure Relief Valve, first loosen the jam nut and then adjust the cap accordingly clockwise for a higher pressure setting or counter clockwise for a lower pressure setting. After verifying the desired pressure set- ting, tighten the jam nut.
Step 11. The Low Pressure Alarm Switch (Item P4 -Fig. 3A) is to be adjusted to operate on falling pressure at approximately 6 psi (0,4 bar) below the minimum Double Interlock Dry Sys- tem air pressure requirement shown on Graph B.
Use the instructions provided with the switch to adjust the pressure setting.
Step 12. Conduit and electrical connections are to be made in accordance with the requirements of the authority having jurisdiction and/or the National Electric Code.
Step 13. Before a system hydrostatic test is performed in accordance with NFPA 13 system acceptance test requirements, the DV-5 Diaphragm Chamber is to be depressurized, the Automatic Drain Valve (4, Fig. 3A) is to be temporarily replaced with a 1/2 inch NPT plug, the 3/32 inch Vent Fitting (17 Fig. 3A) is to be temporarily replaced with a 1/4 inch NPT plug, and the Diaphragm Cover Bolts must be uniformly and securely tightened using a cross- draw sequence. After tightening, double-check to make certain that all of the Diaphragm Cover Bolts are securely tightened. |
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| Engineer | Дата: 01.10.2017, в 19:31 | Сообщение №9 |
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| The trim arrangement is provided with galvanized or black nipples and fittings.
Installation
Proper operation of the DV-5 Deluge Valve depends upon it’s trim being in- stalled in accordance with the instructions given in this Technical Data Sheet. Failure to follow the appropriate trim diagram may prevent the DV-5 Valve from functioning properly, as well as void listings, approvals, and the manufacturer’s warranties.
Field adjustments of the Air Maintenance Device, Low Pressure Alarm Switch, and Pressure Relief Valve are required. |
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| Engineer | Дата: 01.10.2017, в 19:33 | Сообщение №10 |
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| Valve Setting Procedure
Steps 1 through 15 are to be performed when initially setting the DV-5 Deluge Valve; after an operational test of the fire protection system; or, after system operation due to a fire.
Step 1. Close the Main Control Valve.
Step 2. Close the Diaphragm Chamber Supply Control Valve and the System Air Supply Control Valve.
Step 3. Open the Main Drain Valve, System Drain Valve, and all auxiliary drains in the system. After water ceases to discharge, close the System Drain Valve and auxiliary drain valves. Leave the Main Drain Valve open.
Do not open the Inspector’s Test Connection and auxiliary drains if reset- ting after a system test; otherwise, system air pressure will be relieved unnecessarily.
Step 4. Depress the plunger of the Automatic Drain Valve to verify that it is open and that the DV-5 Valve is completely drained.
Step 5. Clean the Strainer in the Diaphragm Chamber Supply connection by removing the clean-out plug and strainer basket. The Strainer may be flushed out by momentarily opening the Diaphragm Chamber Supply Control Valve.
Step 6. Inspect for and clear all ice plugs where system piping has been exposed to freezing conditions and when there has been a flow of water into the system.
Step 7. Replace all damaged or operated sprinklers. Replacement sprinklers must be of the same type and temperature rating as those that operated. |
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| Engineer | Дата: 01.10.2017, в 19:35 | Сообщение №11 |
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| In order to prevent the possibility of a subsequent operation of an overheated solder type sprinkler, any solder type sprinklers possibly exposed to a temperature greater than their maximum rated ambient must also be replaced.
Step 8. Service the air dryer, if applicable, in accordance with the manufacturer’s instructions.
Step 9. Open the System Air Supply Control Valve and allow the system to automatically re-establish its nominal system air pressure per Graph A. Observe the Automatic Drain Valve for leaks. If there are leaks, determine/correct the cause of the leakage problem within the Riser Check Valve. |
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| Engineer | Дата: 01.10.2017, в 19:35 | Сообщение №12 |
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| Step 10. Reset the actuation system.
Manual Actuation Push the operating lever up; however, do not close the hinged cover at this time.
Electric Actuation Reset the electric detection system in accordance with the manufacturer’s instructions to de-energize the Solenoid Valve.
Step 11. Open the Diaphragm Chamber Supply Control Valve and allow full pressure to build up in the Diaphragm Chamber. |
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| Engineer | Дата: 01.10.2017, в 19:39 | Сообщение №13 |
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| Care and Maintenance
The following procedures, inspections, and maintenance must be performed as indicated, in addition to any specific requirements of the NFPA, and any impairment must be immediately corrected.
Before closing a fire protection system main control valve for maintenance work on the fire protection system that it controls, permission to shut down the affected fire protection system must be obtained from the proper authorities and all personnel who may be affected by this action must be notified.
The owner is responsible for the inspection, testing, and maintenance of their fire protection system and devices in compliance with this document, as well as with the applicable standards of the National Fire Protection Association, in addition to the standards of any authority having jurisdiction. Contact the installing contractor or product manufacturer with any questions. |
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| Engineer | Дата: 01.10.2017, в 19:40 | Сообщение №14 |
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| It is recommended that automatic sprinkler systems be inspected, tested, and maintained by a qualified Inspection Service in accordance with local requirements and/or national codes.
It is recommended that the System Inspection Procedure be performed at least semi-annually by a qualified Inspection Service. The Double Interlock Preaction System Inspection Procedure may be followed in lieu of performing any of the operational tests recommended in the Technical Data Sheets for the DV-5 Deluge Valve, Riser Check Valve, 24 VDC Solenoid Valve, Dry Pilot Actuator, and Model MC-1 Manual Control Station.
It is recommended that the individuals responsible for the care and maintenance of the Double Interlock Preaction System develop a working understanding of the system, in general, prior to performing inspection and/or maintenance procedures. These instructions, as well as individual instructions for the deluge valve, riser check valve, solenoid valve, dry pilot actuator, manual control station, switches, and pressure maintenance device should be reviewed.
The following procedures pertain to the automatic control valve portion of the Double Interlock Preaction System. Refer to the manufacturer’s instructions and NFPA 25 for care and maintenance procedures for all other devices (e.g., electric detection, main control and system shut-off valves, supervisory devices, sprinklers, etc.).
Before performing the System Inspection Procedure, which will result in operation of alarms, notify the proper authorities and all personnel who may be affected. |
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| Engineer | Дата: 01.10.2017, в 19:40 | Сообщение №15 |
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| System Inspection Procedure
Step 1. Close the Main Control Valve (Fig. 1) and then open the DV-5 Main Drain Valve (Fig. 3B).
Step 2. Manually operate the Deluge Valve Releasing Panel and verify the following:
The operation of the Releasing Panel and its associated alarms
That there is no leakage from the Dry Pilot Actuator (Fig. 3B)
During this procedure, the Solenoid Valve is opened; however, the Dry Pilot Actuator should remain closed and the DV-5 Deluge Valve Diaphragm Chamber should remain pressurized.
This procedure is used to verify that the DV-5 Deluge Valve will remain set if the electric detection system operates but the sprinkler system remains in its normally pressurized condition.
Step 3. Open the Inspector’s Test Connection but be prepared to close it immediately after verifying that the Low Pressure Alarm Switch (Fig. 3B) and its associated alarms operate properly. The Low Pressure Alarm Switch should operate at the previously established pressure (refer to Installation section, Step 11).
Close the Inspector’s Test Connection.
Step 4. Close the Diaphragm Chamber Supply Control Valve (Fig. 3B).
Step 5. Close the System Shut-Off Valve (Fig. 1) after the system air pressure has been restored to normal.
Step 6. Manually restore the electric fire detection system to a normal condition in accordance with the manufacturer’s instructions. The Solenoid Valve will then be de-energized and returned to its normally closed position.
Step 7. Open the Diaphragm Chamber Supply Control Valve (Fig. 3B).
Step 8. Open the Main Control Valve (Fig. 1) one turn beyond the position at which water just begins to flow from the Main Drain Valve.
Step 9. Close the Main Drain Valve (Fig. 2B).
Step 10. Close the Air Supply Control Valve (Fig. 3B).
Step 11. Open the Dry Pilot Actuator by partially opening the System Main Drain Valve (Fig. 3B) to relieve air pres- sure at the inlet to the Actuator. Verify that there is no leakage from the Dry Pilot Actuator. |
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| Engineer | Дата: 01.10.2017, в 19:40 | Сообщение №16 |
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| During this procedure, the Dry Pilot Actuator is opened; however, the Solenoid Valve should remain closed and the DV-5 Deluge Valve Diaphragm Chamber should remain pressurized.
This procedure is used to verify that the DV-5 Deluge Valve will remain set if the Dry Pilot Actuator operates due to loss of system air pressure and the electric detection system remains in a normal condition.
Step 12. Open (energize) the Solenoid Valve by operating the Deluge Valve Re- leasing Panel and verify the following:
That the DV-5 Valve operates as is indicated by a discharge of water from the System Main Drain Valve and the Automatic Drain Valve. The Automatic Drain Valve may or may not close de- pending on the flow past the partially open Main Control Valve
That the Model FSV-1 Fail-Safe Valve has operated as is indicated by water discharging into the Drip Funnel from the 1/2 inch drain tube connected to the Model FSV-1 Fail-Safe Valve
That the Waterflow Pressure Alarm Switch (Fig. 3B) and its associated alarms properly operate
That the Water Motor Alarm, if applicable, properly operates
This procedure simulates opening of both the Dry Pilot Actuator (loss of sys- tem air pressure) and Solenoid Valve (operation of the Deluge Valve Releasing Panel) to verify automatic system operation.
Step 13. Reset the Double Interlock Preaction System in accordance with the Resetting Procedure section.
Fail-Safe Valve
If water does not discharge from the 1/2 inch tube connected to the Model FSV-1 Fail-Safe Valve during Step 12 of the System Inspection Procedure, the Model FSV-1 Fail-Safe Valve is to be disassembled, cleaned, and inspected as follows:
Step 1. Take the sprinkler system out of service by using Steps 1 through 4 of the Resetting Procedure.
Step 2. Remove the FSV-1 from the Double Interlock Preaction Trim.
Step 3. Refer to Technical Data Sheet TFP1386 and completely disassemble the FSV-1.
Step 4. Clean all parts, and replace worn or damaged parts as necessary.
Step 5. Reassemble the FSV-1 in accordance with Technical Data Sheet TFP1386 and then reinstall the FSV- 1 into the Double Interlock Preaction Trim.
Step 6. Place the system into service in accordance with the Resetting Procedure section and then perform the System Inspection Procedure to verify proper operation of the system, as well as the FSV-1 Fail-Safe Valve. |
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| Engineer | Дата: 01.10.2017, в 19:41 | Сообщение №17 |
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| Quarterly Waterflow Alarm Test Procedure
Testing of the system waterflow alarms must be performed quarterly. To test the waterflow alarm, open the Alarm Test Valve, which will allow a flow of water to the Waterflow Pressure Alarm Switch and/or Water Motor Alarm. Upon satisfactory completion of the test, close the Alarm Test Valve.
The DV-5 Deluge Valve with Double Interlock Preaction Electric/Pneumatic trim can be ordered pre-trimmed or non-assembled as separate items. For non-assembled the following items must be ordered separately:
DV-5 Deluge Valve
CV-1FR Riser Check Valve
Couplings
Double Interlock Preaction Electric/ Pneumatic Trim, Semi-Preassembled
Supervisory Air Supply
Accessories |
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| Engineer | Дата: 01.10.2017, в 19:41 | Сообщение №18 |
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| The DV-5 Valve must be installed in a readily visible and accessible location.
The DV-5 Valve and associated trim must be maintained at a minimum temperature of 4°C.
Heat tracing of the DV-5 Valve or its associated trim is not permitted. Heat tracing can result in the formation of hardened mineral deposits that can prevent proper operation. |
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| Engineer | Дата: 01.10.2017, в 19:42 | Сообщение №19 |
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| | Step 15. Slowly open the Main Control Valve. Close the Main Drain Valve as soon as water discharges from the drain connection. Observe the Automatic Drain Valve for leaks. If there are leaks, determine/correct the cause of the leakage problem. If there are no leaks, the DV-5 Valve is ready to be placed in service and the Main Control Valve must then be fully opened. |
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| Engineer | Дата: 02.10.2017, в 17:50 | Сообщение №20 |
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| Name: Alex
Job Type: Part-Time
Work experience: Chief Engineer for low-voltage systems
- Design automation systems
- Design of fire alarm systems
- Design of alarm systems
- System design of gas and water automatic fire-extinguishing
- Systems design automation and control systems engineering building
Courses and trainings:
- ESSER by Honeywell – Design of fire alarm systems
- Schneider Electric – industrial Automation
Excellent knowledge of AutoCAD
Looking for a part-time job
E-mail: architeccture@gmail.com |
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