Related Manuals for Bray/VAAS Slurry 760 Series
Summary of Contents for Bray/VAAS Slurry 760 Series
- Page 1 Bray/ VAAS Slurry Series Knife Gate Valve 760/762/765/766/767/768 Series Operation and Maintenance Manual...
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Page 2: Table Of Contents
Slurry Series Operation and Maintenance Manual Table of Contents Definition of Terms Safety Instructions Introduction Unpacking Storage Installation Commissioning Cylinder-Operated Valves Manual Valves Valve Maintenance Lubrication Secondary Seal Replacement Manual Valves Cylinder-Operated Valves Stroke Length Tables Seat Replacement (Series 760, 762, and 767) Seat Replacement (No Retainer - Series 765, 766 &... -
Page 3: Definition Of Terms
Slurry 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 moderate injury Used without the safety alert symbol indicates a potential situation which, if not avoided, NOTICE... -
Page 4: Introduction
Slurry 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: Installation
Slurry Series Operation and Maintenance Manual INSTALLATION • Valves can be mounted with flow in both directions • Install the valve between flanges using fasteners 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 Cylinder Operated Valves... -
Page 6: Valve Maintenance
Slurry 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 provided on the collar Cylinder operated valves do not require routine lubrication NOTICE If the cylinder actuator is disassembled for repair, the cylinder wall and seals need to be lubricated with a lithium-based... -
Page 7: Manual Valves
Slurry Series Operation and Maintenance Manual Manual Valves Disconnect the stem from the gate by removing the clevis bolt and nuts Rotate the Hand wheel counter clockwise by holding the stem from rotation, so that stem retracts fully from the gate If valves are supplied with bellows, ensure stem is not rotating, as rota- tion will damage the bellows Remove the secondary seal retainer bolts (6) -
Page 8: Stroke Length Tables
Slurry Series Operation and Maintenance Manual Stroke Length Tables Series 760 Valve Size A (mm) B (mm) Series 762 Series 765 & 766 Valve Size A (mm) B (mm) Valve Size A (mm) B (mm) -
Page 9: Seat Replacement (Series 760, 762, And 767)
Slurry Series Operation and Maintenance Manual Series 767 Series 768 Valve Size A (mm) B (mm) Valve Size A (mm) B (mm) Seat Replacement (Series 760, 762, and 767) Relieve line pressure before attempting to remove the valve from the line to avoid personnel injury and/or equipment damage If the valve has a pneumatic actuator, solenoid valve, limit switches, or other accessories, disconnect the electri- cal and pneumatic supply Relieve the line pressure and close the valve Flush the line if necessary... -
Page 10: Seat Replacement (No Retainer - Series 765, 766 & 768)
Pneumatic Cylinder The Bray/VAAS pneumatic cylinder actuator is a low maintenance design and does not require routine maintenance It has an FRP tube which is lubricated for life with a special coating on the inside wall Filtered dry, instrument quality air (non-... -
Page 11: Spare Parts
Slurry Series Operation and Maintenance Manual Recommended Spare Parts Following are parts recommended as spares, which may be stocked Following are general recommended spares for valves Provide the valve serial number and work order number from the nameplate for proper parts •... - Page 12 Operation and Maintenance Manual All statements, technical information, and recommendations Bray/VAAS 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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