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INSTALLATION,MAINTENANCE,ANDTESTINGMANUAL
FireLockNXT™DryValve
SERIES768
WARNING
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
REV_D
HANG THESE INSTRUCTIONS ON THE
INSTALLED VALVE FOR EASY FUTURE REFERENCE
WARNING
• Failuretofollowinstructionsandwarningscancauseproduct
failure,resultinginseriouspersonalinjuryandpropertydamage.
• Readandunderstandallinstructionsbeforeattemptingto
installanyVictaulicpipingproducts.
• Wearsafetyglasses,hardhat,andfootprotection.
• Savethisinstallation,maintenance,andtestingmanualfor
future r eference.
Ifyouneedadditionalcopiesofanyliterature,orifyouhaveany
q uestionsconcerningthesafeinstallationandoperationofthis
product,contactVictaulic,P.O.Box31,Easton,PA18044-0031,
USA,Telephone:1-800PICKVIC,e-mail:pickvic@victaulic.com.
I-768
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Related Manuals for Victaulic FireLock NXT 768 Series
Summary of Contents for Victaulic FireLock NXT 768 Series
- Page 1 • Failuretofollowinstructionsandwarningscancauseproduct failure,resultinginseriouspersonalinjuryandpropertydamage. • Readandunderstandallinstructionsbeforeattemptingto installanyVictaulicpipingproducts. • Wearsafetyglasses,hardhat,andfootprotection. • Savethisinstallation,maintenance,andtestingmanualfor future r eference. Ifyouneedadditionalcopiesofanyliterature,orifyouhaveany q uestionsconcerningthesafeinstallationandoperationofthis product,contactVictaulic,P.O.Box31,Easton,PA18044-0031, USA,Telephone:1-800PICKVIC,e-mail:pickvic@victaulic.com. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D...
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Page 3: Table Of Contents
Troubleshooting – System ....... . . 39 www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D... -
Page 4: Installer Safety Instructions
PROTECTTHESYSTEMFROMFREEZINGCONDITIONS.THE VALVEANDSUPPLYPIPINGMUSTBEPROTECTEDFROM FREEZINGTEMPERATURESANDMECHANICALDAMAGE. 10. IFTHEINLETWATERSUPPLYISINTERRUPTEDFORANY REASON,AND S YSTEMSUPPLYPRESSURETOTHEVALVE DECREASES,MAKESURETHEDIAPHRAGMCHARGELINEIS FULLYPRESSURIZEDBEFOREPLACINGTHE S YSTEMBACK INSERVICE. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_2 REV_D... -
Page 5: Introduction
INSTALLATION,MAINTENANCE,ANDTESTINGMANUAL FireLockNXT™DryValve SERIES768 INTRODUCTION The following instructions are a guide for proper installation of Victaulic Series 768 FireLock NXT Dry Valves. These instructions involve pipe that is properly prepared and grooved in accordance with current Victaulic specifications. NOTICE • Drawingsand/orpicturesinthismanualmaybeexaggeratedforclarity. -
Page 6: Exploded View Drawing - Trim Components
For information regarding installation of the Series 75B Supplemental Alarm Device or the Series 7C7 Air Maintenance/Compressor Assembly (not shown), refer to the instructions supplied with the product. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_4 REV_D... -
Page 7: Exploded View Drawing - Trim Components
For information regarding installation of the Series 75B Supplemental Alarm Device or the Series 7C7 Air Maintenance/Compressor Assembly (not shown), refer to the instructions supplied with the product. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_5... -
Page 8: Exploded View Drawing - Internal Valve Components
* NOTE: The 1½-inch/48.3-mm and 2-inch/60.3-mm valve sizes contain washers under the heads of the cover plate bolts. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_6 REV_D... -
Page 9: Section View Drawing And Description
Middle Chamber Outlet Eyelet Upper Diaphragm Assembly Lower Chamber VENT TO ATMOSPHERE AIR IN INLET OUTLET Exaggerated for Clarity www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_7... -
Page 10: Section View Drawing And Description
To Pressure Gauge Air Inlet CROSS-SECTION WITH UPPER CHAMBER ROTATED 45° AND BOLT REMOVED FOR CLARITY Exaggerated for Clarity www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_8 REV_D... -
Page 11: Air Supply Requirements
Strainer (100 Mesh) Spring-Loaded, Soft-Seated Ball Check Valve Fast Fill Ball Valve (Normally Closed) System Capacity (in gallons) www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_9... -
Page 12: Victaulic Series 757P Air Maintenance Trim Assembly (Amta) With Pressure Switch Option
Therefore, charging the air regulator above the set point could cause premature operation of a valve installed with a Series 746-LPA Dry Accelerator. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_10 REV_D... -
Page 13: Important Installation Information
* Teflon is a registered trademark of the DuPont Company www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_11... -
Page 14: Compression Fitting And Tube Installation
NEVER insert a plug into the outlet of the auto drain, drip check, or actuator in place of the compression fitting/tube. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_12 REV_D... -
Page 15: Placing The System In Service
3a. Confirm that the system has been depressurized. The gauges should indicate zero pressure. Open the diaphragm-charge-line ball valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_13... - Page 16 776 Low-Pressure Actuator. If a Series 746-LPA Dry Accelerator is Close the diaphragm-charge-line ball valve. installed, make sure the accelerator is not flooded. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_14 REV_D...
- Page 17 Refer to the “Removing and Replacing the resulting in valve operation in the event of a system leak. Diaphragm Assembly” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_15...
- Page 18 18. If a Series 746-LPA Dry Accelerator is installed, open the isolation ball valve. This will set the accelerator. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_16 REV_D...
- Page 19 24. If water is flowing from the drip check, close the water supply main control valve, and start over at step 1. Refer to the “Troubleshooting” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_17...
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Page 20: External Inspection
If the air chamber’s pressure is below the system air pressure, follow the “Troubleshooting” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_18 REV_D... -
Page 21: Required Tests
While the water supply main drain valve is fully open, record the water supply pressure (from the water supply gauge) as the r esidual pressure. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_19... -
Page 22: Water Flow Alarm Test
Water Motor Alarm Shutoff Valve (European trim only) Open Open the water supply main drain valve fully to flush the water supply of any contaminants. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_20 REV_D... - Page 23 Close the alarm test ball valve after verifying proper operation of all alarms. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_21...
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Page 24: Water Level And Low Air Alarm Tests
Open the water supply main drain valve fully to flush the water Record the system air pressure at which the low air alarm supply of any contaminants. activates. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_22 REV_D... - Page 25 13. If a Series 746-LPA Dry Accelerator is installed, open the isolation ball valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_23...
- Page 26 20. Provide test results to the authority having jurisdiction, if required. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_24 REV_D...
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Page 27: Required Operational (Trip) Tests
Close the water supply main drain valve. Open the water supply main drain valve fully to flush the water supply of any contaminants. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_25... - Page 28 14. Perform all steps in the “Placing the System in Service” section. 10. Close the water supply main control valve fully. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_26 REV_D...
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Page 29: Full Operational (Trip) Test
Close the water supply main control valve. Open the water supply main drain valve fully to flush the water supply of any contaminants. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_27... - Page 30 14. Close the system main drain valve. 15. Perform all steps in the “Placing the System in Service” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_28 REV_D...
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Page 31: Required Internal Inspection
Open the water supply main drain valve. Confirm that water is not flowing from the water supply main drain valve. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_29... - Page 32 (inspector’s test connection) and any auxiliary drain valves. Close the slow-fill ball valve on the AMTA. 13. Push the latch back (toward the diaphragm). www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_30 REV_D...
- Page 33 Plate Gasket and Cover Plate” section. 18. Place the system back in service by following the “Placing the System in Service” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_31...
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Page 34: Maintenance
Remove the seal assembly bolt/bolt seal from the clapper seal. moisture that is under the seal washer and on the clapper seal. CAUTION • UseonlyVictaulic-suppliedreplacementparts. Failuretofollowthisinstructioncouldcauseimpropervalve operation,resultinginpropertydamage. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_32 REV_D... - Page 35 Insert the seal washer carefully underneath the sealing lip of the gasket. Remove any contaminants, dirt, and mineral deposits from the clapper. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_33...
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Page 36: Removing And Replacing The Clapper Assembly
13. Place the system back in service by following the “Placing the System in Service” section. Remove the clapper from the valve body. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_34 REV_D... - Page 37 13. Place the system back in service by following the “Placing the valve body. System in Service” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_35...
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Page 38: Installing The Cover Plate Gasket And Cover Plate
CAUTION • DONOTover-tightenthecoverplatebolts. Failuretofollowthisinstructioncouldcausedamagetothe coverplategasket,resultinginvalveleakage. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_36 REV_D... -
Page 39: Removing And Replacing The Diaphragm Assembly
Align the holes in the diaphragm with the holes in the valve body. Be careful not to damage the diaphragm during installation. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_37... -
Page 40: Replacing The Strainer Screen For Series 776 Low-Pressure Actuators
Refer to the applicable trim drawing for details. Place the system back in service by following the “Placing the System in Service” section. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768_38 REV_D... -
Page 41: Troubleshooting - Series 776 Low-Pressure Actuator
The diaphragm is damaged. Contact Victaulic. Air is leaking from the diaphragm assembly. The diaphragm is damaged. Contact Victaulic. www.victaulic.com VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. REV_D I-768_39... - Page 44 I-768 INSTALLATION,MAINTENANCE,ANDTESTINGMANUAL FireLockNXT™DryValve SERIES768 WCAS-7EFF3S For complete contact information, visit www.victaulic.com I-7684236REVDUPDATED05/2008Z000768000 VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2007 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA. I-768...
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Questions and answers
Installed a new Actuator on a Victaulic NXT S 768 Air Dry System Piping The system aired up but when pulling pin to set priming water the water would dump out Actuator
Water could dump out of the actuator when setting priming water on a Victaulic FireLock NXT 768 Series Air Dry System if the outlet of the auto drain, drip check, or actuator is not properly connected using the provided compression fittings and tubes. The manual specifically warns against inserting a plug into these outlets instead of using the correct fittings. Improper installation could lead to unintended water discharge.
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