Related Manuals for Bray/VAAS O-Ported Series
Summary of Contents for Bray/VAAS O-Ported Series
- Page 1 Bray/ VAAS O-Ported Series Knife Gate Valve 770/780 Series Operation and Maintenance Manual...
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Page 2: Table Of Contents
O-Ported Series Operations and Maintenance Manual Table of Contents Definition of Terms Safety Instructions Introduction Unpacking Storage Installation Commissioning Cylinder-Operated Valves Manual Valves Maintenance Lubrication Packing Replacement Seat Replacement Actuator Maintenance Spare Parts Packing Details Troubleshooting For information on this product and other Bray products please visit us at our web page -... -
Page 3: Definition Of Terms
O-Ported Series Operation and Maintenance Manual Definition of Terms - Safety Instructions READ AND FOLLOW THESE INSTRUCTIONS SAVE THESE INSTRUCTIONS DEFINITION OF TERMS Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury Indicates a potentially hazardous situation which, if not avoided, may result in minor or... -
Page 4: Introduction
O-Ported Series Operation and Maintenance Manual The valve must only be installed, commissioned, operated, and repaired by qualified personnel. The device generates a large mechanical force during normal operation. All installation, commissioning, operation, and maintenance must be performed under strict observation of all applicable codes, standards, and safety regulations. -
Page 5: Commissioning
O-Ported Series Operation and Maintenance Manual Support should be used for valves size 8” and over when installed in vertical pipe Failure to do so can result in improper valve operation and/or valve failure COMMISSIONING GUIDELINES • Gland packing is tightened to hold the specified pressure and tested for no leakage before dispatch However, this may require some adjustment at site due to loosening in transit etc •... -
Page 6: Maintenance
O-Ported Series Operation and Maintenance Manual MAINTENANCE NOTICE Any modification or use of unauthorized parts voids any and all warranty considerations Lubrication The manual valve stem should be lubricated at regular intervals for smooth operation of the valve A lubrication nipple is... -
Page 7: Packing Replacement
O-Ported Series Operation and Maintenance Manual Packing Replacement Relieve line pressure before loosening gland nuts to avoid injury and/or equipment damage Relieve the line pressure Fully close the valve Ensure the line is empty, and flush if necessary Manual Valves Ensure the valve is fully closed Disconnect the stem from the gate by removing the clevis bolts &... -
Page 8: Actuator Maintenance
O-Ported Series Operation and Maintenance Manual hoist may be needed for larger size valves Make sure the valve is in the open position Replacing the seats does not require valve or actuator disassembly Remove the seats on either side (which are drop-in fitted) and replace with new seats... -
Page 9: Packing Details
O-Ported Series Operation and Maintenance Manual Packing Details Series 770 Valve Size (in ) Packing Size (mm) Length (mm) Packing Layers Quad Seal Layer Total Layers Sq 8 Sq 8 Sq 8 Sq 8 Sq 8 Sq 8 Sq 8... -
Page 10: Troubleshooting
Replace seal Bray/VAAS All statements, technical information, and recommendations in this bulletin are for general use only Consult Bray/VAAS Division of Bray International, Inc representatives or factory for the specific requirements and material selection for your intended application The right to...
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