GATE VALVE ASME B16.34
Gate valves in classes ranging from 600 to 4100 conform to ASME B16.34. The valves feature a high integrity pressure-seal body-bonnet connection and are of cast-yoke construction. The valves are offered in Parallel-slide and Flex Wedge designs.
DESIGN FEATURES :
- Seat face: Ground and lapped to a smooth finish.
- Flexible Wedge with low center stem –wedge contact. Wedge is ground and lapped to a smooth finish and closely guided to prevent dragging and seat damage.
- Non-rotating stem with precision ACME threads and burnished finish. Double ACME threads for faster operation.
- Body and bonnet joint accurately machined.
- Each valve is shell, seat and backseat pressure tested.
- Valves are available with socket weld ends.
- Yoke bushing can be lubricated to minimize friction and prolong life of the stem.
- Body and bonnet castings are precision machined.
- Gland has two-piece construction for easy alignment.
- Valves are specially cleaned and processed for oxygen or cryogenic service and are then sealed to prevent contamination.
- Bonnet chamber ventilation, in order to prevent excess pressure build up caused by trapped cryogenic liquids, is available upon request.
- Each valve has a unique certification number that is traceable to the valve certification sheet which includes MTR data, pressure test report, inspection report and certificate of conformance.
- Other available options as follows:
» Alternate valve materials
» Alternate trim materials
» Non-extended design
» Other options available as specified