Related Manuals for Bray/VAAS 950 Series
Summarization of Contents
Safety and Definitions
Safety Symbols and Definitions
Explains the meaning of warning, caution, and notice symbols used in the manual.
Hazard-Free Operation
Outlines necessary precautions for safe installation and operation of the valve.
Qualified Personnel Criteria
Details the required qualifications and training for personnel working with the valve.
Unpacking and Valve Identification
Valve Identification Details
Describes how to identify valve size, material, and serial number from markings and nameplate.
Installation Procedures
Mounting and Orientation
Instructions on mounting valves, including flow direction and stem orientation.
Flange Installation
Guidance on installing the valve between flanges using fasteners and gaskets.
Support for Large Valves
Cautionary note on using support for valves 8" and over in vertical pipe.
Commissioning Guidelines
Gland Packing Adjustment
Procedure for adjusting gland packing to ensure no leakage after pressure testing.
Cylinder Operated Valve Setup
Steps for connecting air supply, ensuring air quality, and wiring electrical accessories.
Manual Valve Operation Check
Procedure to manually operate and observe the valve's function.
Maintenance and Lubrication
Warranty Notice
Notice stating that modifications or unauthorized parts void the warranty.
Manual Valve Stem Lubrication
Instructions for regular lubrication of the manual valve stem via a nipple.
Cylinder Actuator Lubrication
Note on lubricating cylinder wall and seals with lithium-based grease during repair.
Packing Replacement Procedures
Packing Replacement - Manual Valves
Step-by-step guide for replacing packing in manual valves, including stem removal and packing insertion.
Packing Replacement - Cylinder Valves
Steps for replacing packing in cylinder-operated valves, involving actuator disconnection.
Seat Replacement Procedure
Seat Replacement Steps
Detailed instructions for removing and replacing valve seats, including stem and superstructure handling.
Actuator Maintenance and Spares
Pneumatic Cylinder Maintenance
Information on the low-maintenance design of the pneumatic cylinder actuator.
Recommended Spare Parts
List of recommended spare parts for valves and actuators, including packing and seats.
Packing Size Details
Table detailing packing size, length, and quantity based on valve size.
Troubleshooting Guide
Media Oozing from Gland Packing
Troubleshooting steps for media leakage from gland packing, typically requiring packing replacement.
Valve Leaks in Closed Position
Solutions for valve leaks when fully closed, addressing worn seats or scratched gates.
High Torque Issues
Addresses causes of high torque during seating/unseating, like misalignment or improper packing.
Valve Jerks During Operation
Troubleshooting for jerky valve operation due to insufficient air supply or solenoid valve issues.
Unable to Close or Open Gate
Diagnoses for problems closing or opening the gate, such as bent gates or orientation issues.
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