|Welded-in Seat Ring|
- Seat ring is seal welded to eliminate leak path.
These valves comply with the applicable requirements of the following standards:
- API 598
- ASME B16.34
- ASME B16.25
- ASME B16.10
- ASME B16.5
- Standard material is ASTM A216 Grade WCB.
- Standard trim is XU (13% Cr to hardface) which is suitable for a wide range of applications.
- Butt weld end dimensions shall be in accordance with ASME B16.25 (without backing ring) for standard pipe schedules, unless otherwise specified in the purchase order. Butt weld ends shall not be produced from flanged end castings unless specifically authorized in writing by CRANE Energy Flow Solutions.
Class – Schedule
150/300 – Standard
600 – Extra Strong
900/1500 – Schedule 160
Body is cast with heavy sections reinforced at points subjected to the greatest stress. Valves are available in both flanged and butt welding ends. All conform to ASME specifications.
Disc Stem Nut
Disc Stem Ring connects the disc to the stem, permitting the disc to swivel and aid in securing tight seating for trouble-free service.
Stem has long engagement with yoke bushing for accurate seating.
Gland is a two-piece, ball-type which exerts even pressure on the packing without binding the stem.
Gland Eye Bolts
Eye bolts are securely fastened to the bonnet yet swing away to permit easy access to the stuffing box.
Bonnet gasket provides a positive seal against leakage. Class 150 and 300 valves have a male/female bonnet joint. A ring-type gasket is employed in Class 600.