Tips for Valves
Best Practices: How to get the Most out of Valves
- Always keep the valve in full open position. Charge the lubricant into the valve till it starts oozing out of the gap between the ball and seat rings ensuring that the seat rings are completely covered in grease.
- Additionally, as a temporary solution, paper tapes may also be used to seal off the crevices between the ball and seat rings and also the one between the seat ring back face and the valve body
- Ensure that open stoppers are properly set. This is extremely important, in full bore ball valves, as these valves go into main lines which are pigged.
- Extreme care should be exercised while handling the valve during its painting. Most specifications call for grit blasting, before finish coats. This calls for extra handling care as very many valve and actuator parts need to be masked, so that grit does not damage those delicate parts. Also ensure that grit does not enter the valve port, by any chance.
- Actuator and accessories shall be protected from possible transportation damages. Special metallic protection hoods shall be created on the valve while the valve is put inside the packing case.
- Caution stickers stating the ‘Do’s’ and ‘Don’ts’ should be placed on the valve and the packing case
- The valve should be packed for shipment with air-tight end closures to prevent dusty air & rain water from entering the valve port
- The packing case should carry labels with specific handling instructions.
The following pointers should be taken care of at the end-user’s site for optimal use of the valves:
- Valves must be handled only by authorized and trained staff
- The valve manufacturers instruction and operating manual should be carefully studied to ensure proper handling and use of the valve
- Store the valves only under a covered area and not directly on the floor
- Valves should not be removed from the packing case unless it is ready for field testing or installation
- Don’t remove end protectors till the valve is ready for testing or installation
- Refer to the caution stickers, ,if any, on the valve and act accordingly
- Use proper slinging method, while valves are taken up for installation
- If valves are to be re-tested at the site, it should be done in the presence of a valve manufacturer’s representative or valve technician.