Bray/VAAS O-Ported Series Operation And Maintenance Manual Download Page 3

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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 
moderate injury 

NOTICE

Used without the safety alert symbol indicates a potential situation which, if not avoided, 
may result in an undesirable result or state, including property damage 

HAZARD-FREE USE

This device left the factory in proper condition to be safely installed and operated in a hazard-free manner  The notes and 
warnings in this document must be observed by the user if this safe condition is to be maintained and hazard-free opera-
tion of the device assured 

Take all necessary precautions to prevent damage to the valve due to rough handling, impact, or improper storage  Do not 
use abrasive compounds to clean the valve, or scrape metal surfaces with any objects 

The control systems in which the valve is installed must have proper safeguards to prevent injury to personnel, or damage to 
equipment, should failure of system components occur 

QUALIFIED PERSONNEL

•  A qualified person in terms of this document is one who is familiar with the installation, commissioning, and operation 

of the device and who has appropriate qualifications, such as:

•  Is trained in the operation and maintenance of electrical equipment and systems in accordance with established safety 

practices

•  Is trained or authorized to energize, de-energize, ground, tag, and lock electrical circuits and equipment in accordance 

with established safety practices

•  Is trained in the proper use and care of personal protective equipment (PPE) in accordance with established safety 

practices

•  Is trained in first aid 

•  In cases where the device is installed in a potentially explosive (hazardous) location – is trained in the commissioning, 

operation, and maintenance of equipment in hazardous locations

Summary of Contents for O-Ported Series

Page 1: ...Bray VAAS O Ported Series Knife Gate Valve 770 780 Series Operation and Maintenance Manual...

Page 2: ...inder Operated Valves 3 Manual Valves 3 Maintenance 4 Lubrication 4 Packing Replacement 5 Seat Replacement 5 Actuator Maintenance 6 Spare Parts 6 Packing Details 7 Troubleshooting 8 For information on...

Page 3: ...handling impact or improper storage Do not use abrasive compounds to clean the valve or scrape metal surfaces with any objects The control systems in which the valve is installed must have proper saf...

Page 4: ...d its components during transit Valve size and brief material specification of body markings such as SS or DI are marked on the valve body Stainless steel nameplate below fixed on to the yoke of valve...

Page 5: ...o packing Cylinder Operated Valves 1 Connect instrument quality air preferably through an air filter regulator of adequate size The recommended air pres sure is 80 120 psi 5 8 bar Refer to the appropr...

Page 6: ...ve 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...

Page 7: ...o not line up 8 Install the packing gland 3 and gland nuts 2 9 Ensure the gap between the gland and the gate is uniform all around 10 Tighten the gland nuts finger tight plus one turn 11 For Series780...

Page 8: ...e for Series 770 ACTUATOR MAINTENANCE 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 lubr...

Page 9: ...6 Sq 8 475 2 1 3 8 Sq 8 545 2 1 3 10 Sq 8 650 2 1 3 12 Sq 8 775 3 1 4 14 Sq 10 925 3 1 4 16 Sq 10 1000 3 1 4 18 Sq 10 1100 3 1 4 20 Sq 16 1250 2 1 3 24 Sq 16 1440 2 1 3 Series 780 Valve Size in Packi...

Page 10: ...fasteners loosen Tighten the super structure fasteners Insufficient air supply Pneumatic operated valves Increase supply pressure Solenoid valve dust accumulation Remove and clean solenoid valve Pisto...

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